26
20
1651
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
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Channels
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(GC) Grand Canyon Stratigraphic Suite -- Grand Canyon, Arizona
Description
An account of the resource
This collection contains 21 samples. They are a representation of samples of lithology from the early precambrian to the late permian. The stratigraphic sequence contains a variety of rocks including, but not limited to schist, limestone, and sandstone. These specimens are representative of the geologic section in the Grand Canyon, but no specimens were collected within the boundaries of the National Park.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here</strong>:<br />Blakey, R.C., and Middleton, L.T., 2012, Geologic history and paleogeography of paleozoic and early mesozoic sedimentary rocks, eastern Grand Canyon, Arizona: Geologic Society of America Bulletin, v. 489, pp. 81-92, doi: <a href="%20http%3A//dx.doi.org/10.1130/2012.2489(05)">10.1130/2012.2489(05)</a><br /><a href="http://dx.doi.org/10.1130/2012.2489(05)%20" target="_blank"><br /></a>
<ul><li>This reference outlines the stratigraphy found in this suite. It specifically highlights the paleozoic era in which the samples represent. </li>
</ul><br /><strong>Additional Resources: <br /></strong>Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979, Geology of the older Precambrian rocks of the Grand Canyon Part I. Petrology and structure of the Vishnu Complex: Precambrian Research, v. 8, p. 219-241, doi: <a href="http://dx.doi.org/10.1016/0301-9268(79)90030-5%20">10.1016/0301-9268(79)90030-5 </a><br /><ul><li>Brown et al. begins this series of 3 articles outlining the geologic timescale and discusses the Vishnu complex and how it fits into the geologic timescale. It provides an explaination for several of the samples in this collection. </li>
</ul>
Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979, Geology of the older Precambrian rocks of the Grand Canyon Part II. The Zoroaster Plutonic Complex and related rocks: Precambrian Research, v. 8, p. 243-275, doi<span><span>: <a href="http://dx.doi.org/10.1016/0301-9268(79)90031-7" target="_blank">10.1016/0301-9268(79)90031-7</a><br /></span></span>
<ul><li>In the second part of the article, the authors discuss the importance of the pluton and how it affected the formation of the stratigraphic profile of the grand canyon. </li>
</ul>
Clark, M.D., 1979, Geology of the older Precambrian rocks of the Grand Canyon. Part III. Petrology of mafic schists and amphibolites: Precambrian Research, v. 8, p. 277-302, doi<span><span>: <a href="http://dx.doi.org/10.1016/0301-9268(79)90032-9" target="_blank">10.1016/0301-9268(79)90032-9</a><br /></span></span>
<ul><li>The final section of this discussion set provides insight into the mafic layers of the stratigraphic column. </li>
</ul>
Ilg, B.R., Karlstrom, K.E., Hawkins, D.P., and Williams, M.L., 1996, Tectonic evolution of Paleoproterozoic rocks in the Grand Canyon: Insights into middle-crustal processes: Bulletin of the Geological Society of America, v. 108, p. 1149-1166, doi<span><span>: <a href="http://dx.doi.org/10.1130/0016-7606(1996)108" target="_blank">10.1130/0016-7606(1996)108</a><br /></span></span>
<ul><li>This is a general look into the formation of the stratigraphic layers. This article does a good job combining the above articles into one condensed summary. </li>
</ul>
Spatial Coverage
Spatial characteristics of the resource.
Peach Springs, Mohave Co., Arizona
Peach Springs, Coconino Co., Arizona
Seligman, Ysvupai Co., Arizona
Williams, Coconino Co., Arizona
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Temporal Coverage
Temporal characteristics of the resource.
Samples range from Precambrian - Permian
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Toroweap Formation
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Toroweap Limestone
Description
An account of the resource
Sample from the beta member of the Toroweap formation. Sample is light tan-orangish with weathered surfaces.
Both thin section images were taken at a 400x magnification.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/1">Grand Canyon Western Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
GC-19
Spatial Coverage
Spatial characteristics of the resource.
Prominent bluff near US 66 at S. end of Aubrey Cliffs, see specimen 14 locality.
Temporal Coverage
Temporal characteristics of the resource.
Permian
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
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Omeka Image File
The metadata element set that was included in the `files_images` table in previous versions of Omeka. These elements are common to all image files.
Width
2272
Height
1704
Bit Depth
8
Channels
3
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0900e6426f6294aa7f494d5d959dff03
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(GC) Grand Canyon Stratigraphic Suite -- Grand Canyon, Arizona
Description
An account of the resource
This collection contains 21 samples. They are a representation of samples of lithology from the early precambrian to the late permian. The stratigraphic sequence contains a variety of rocks including, but not limited to schist, limestone, and sandstone. These specimens are representative of the geologic section in the Grand Canyon, but no specimens were collected within the boundaries of the National Park.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here</strong>:<br />Blakey, R.C., and Middleton, L.T., 2012, Geologic history and paleogeography of paleozoic and early mesozoic sedimentary rocks, eastern Grand Canyon, Arizona: Geologic Society of America Bulletin, v. 489, pp. 81-92, doi: <a href="%20http%3A//dx.doi.org/10.1130/2012.2489(05)">10.1130/2012.2489(05)</a><br /><a href="http://dx.doi.org/10.1130/2012.2489(05)%20" target="_blank"><br /></a>
<ul><li>This reference outlines the stratigraphy found in this suite. It specifically highlights the paleozoic era in which the samples represent. </li>
</ul><br /><strong>Additional Resources: <br /></strong>Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979, Geology of the older Precambrian rocks of the Grand Canyon Part I. Petrology and structure of the Vishnu Complex: Precambrian Research, v. 8, p. 219-241, doi: <a href="http://dx.doi.org/10.1016/0301-9268(79)90030-5%20">10.1016/0301-9268(79)90030-5 </a><br /><ul><li>Brown et al. begins this series of 3 articles outlining the geologic timescale and discusses the Vishnu complex and how it fits into the geologic timescale. It provides an explaination for several of the samples in this collection. </li>
</ul>
Brown, E.H., Babcock, R.S., Clark, M.D., and Livingston, D.E., 1979, Geology of the older Precambrian rocks of the Grand Canyon Part II. The Zoroaster Plutonic Complex and related rocks: Precambrian Research, v. 8, p. 243-275, doi<span><span>: <a href="http://dx.doi.org/10.1016/0301-9268(79)90031-7" target="_blank">10.1016/0301-9268(79)90031-7</a><br /></span></span>
<ul><li>In the second part of the article, the authors discuss the importance of the pluton and how it affected the formation of the stratigraphic profile of the grand canyon. </li>
</ul>
Clark, M.D., 1979, Geology of the older Precambrian rocks of the Grand Canyon. Part III. Petrology of mafic schists and amphibolites: Precambrian Research, v. 8, p. 277-302, doi<span><span>: <a href="http://dx.doi.org/10.1016/0301-9268(79)90032-9" target="_blank">10.1016/0301-9268(79)90032-9</a><br /></span></span>
<ul><li>The final section of this discussion set provides insight into the mafic layers of the stratigraphic column. </li>
</ul>
Ilg, B.R., Karlstrom, K.E., Hawkins, D.P., and Williams, M.L., 1996, Tectonic evolution of Paleoproterozoic rocks in the Grand Canyon: Insights into middle-crustal processes: Bulletin of the Geological Society of America, v. 108, p. 1149-1166, doi<span><span>: <a href="http://dx.doi.org/10.1130/0016-7606(1996)108" target="_blank">10.1130/0016-7606(1996)108</a><br /></span></span>
<ul><li>This is a general look into the formation of the stratigraphic layers. This article does a good job combining the above articles into one condensed summary. </li>
</ul>
Spatial Coverage
Spatial characteristics of the resource.
Peach Springs, Mohave Co., Arizona
Peach Springs, Coconino Co., Arizona
Seligman, Ysvupai Co., Arizona
Williams, Coconino Co., Arizona
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Temporal Coverage
Temporal characteristics of the resource.
Samples range from Precambrian - Permian
Rock
A physical material with a mineral composition.
Unit
Formation or other descriptive rock category
Kiabab Limestone
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Kaibab Limestone
Description
An account of the resource
A light tan limestone with weathered surfaces
Both thin section images were taken at a 400x magnification.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/1">Grand Canyon Western Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
GC-20
Spatial Coverage
Spatial characteristics of the resource.
E. side of road 15 mi. N. of junction of US 66 and 180 about 16mi. N. of Williams, Coconino Co., Arizona.
Temporal Coverage
Temporal characteristics of the resource.
Permian
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Alternative Title
An alternative name for the resource. The distinction between titles and alternative titles is application-specific.
Limestone
-
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4de3be3b2e6ea45da1b055a803f668da
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Pyroxenite
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271b0dee7496288932930507787f8c4d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in XPL.
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babe2aa4689e22d8c867e3f19cf7708f
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
2
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Pyroxenite
Description
An account of the resource
Coarse pyroxenite, with traces of nepheline. This is the freshest pyroxenite that was found. It occurs near the nepheline syenite body in the eastern part of the complex.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-1
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/cd8917a3fec07f27e1c1abb108ff5d7f.JPG
3b71060dfcb5b45e8db137b445d69e0a
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-2.
https://dev.geosciencecollections.milne-library.org/files/original/7448ac119c7af7fde468970027d4fbc4.JPG
8ba04b93de102851ba40a1d26fa8b930
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/44e2718b86481c946d7f9210f9e69f4d.JPG
86c731b10528a8561d1aff9e6bab9160
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Gneiss (Fenitized)
Description
An account of the resource
Fenitized Gneiss. Gneiss discovered in direct contact with pyroxenite in prospect trench on ridge, about 500 ft. west of PH-1.. .
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-2
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/f18b995d1fd2d8b05ea764dc1a156bf5.JPG
653b58c57d11248d841fcac03406e7ab
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-3.
https://dev.geosciencecollections.milne-library.org/files/original/a875dd7bc15c4259cb7def72a85364c8.JPG
bc416af23a6ce3d3618097f92510173d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/2457fee808a6789b1f877907ee6e825f.JPG
2be6356ba15e519fa536f69a8d492e37
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Nepheline syenite
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-3
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Nepheline syenite that outcrops on west side of trail at about 9200 ft. on east side line of section.
-
https://dev.geosciencecollections.milne-library.org/files/original/a01c78b36f39c3d7cd60894f7694b6c2.JPG
4a4ee9812bc541f5984aca3ea064f038
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-4.
https://dev.geosciencecollections.milne-library.org/files/original/b2d4ccc8f47e369f62d4fa2993aab480.JPG
56bf2b87e7a5c01fb34755bab3aeae9d
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/c56de9571e1666e1b8bf3bb8a0aa1cc4.JPG
d519ea57928d31967adba64221e4779e
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Nepheline syenite
Description
An account of the resource
Nepheline Syenite. Thin, dark vein runs through the center body of the rock.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-4
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/006580ed61c4cd98312b2a9ab00281f1.JPG
126731cbea863a8a98f5a9f66eab72ed
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-5 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/b1b1f2d05b08cdd08553d5775cb683fb.JPG
8d4295e2dfd96a78ddbd146265f17996
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-5 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/c42185ca7615634641e542c0dfa6c622.JPG
e25700c79beaf27e7b7df57ed13304ea
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-5 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Carbonatite
Description
An account of the resource
White Carbonatite. Found on Southwest side of the main rock unit body on North side of Beaver Creek about 1/4 mi.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-5
Spatial Coverage
Spatial characteristics of the resource.
Beaver Creek, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/1944453ff8c5303e254aafa47beca059.JPG
aca070038e07179fcf9bded240f2fe6e
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-6 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/ee6696d106a31aa23f719673b586adf5.JPG
eef608ad5d095dad8005b8db2995d910
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-6 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/e0d82c941162f6bd1a68a3e94864535e.JPG
4bc83074d7aa14f57c41054833c8b89c
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-6 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Ijolite
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-6
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Recently exhumed ijolite from shallow bulldozer cut.
Hand Sample: Shows traces of iron oxidation in isolated areas. Small (> 0.5 mm in diameter) nodules, with the appearance of small sand grains appear in clusters on one face of the rock (not featured in hand sample image).
-
https://dev.geosciencecollections.milne-library.org/files/original/32a8c19bcc401b3c7a874a1e38a5d5ac.JPG
5c52331acc239bc6ac675fcd560ac020
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-7 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/13f2635247793908bf5465275b25df55.JPG
4bb24b9816daafb743eccd04292594c0
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-7 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/c0d61cb11c9e51cb1ec109b28a38c0e5.JPG
d746cac068f19b14894cb095a1a3c8bb
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-7 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Ilmenite.
Description
An account of the resource
Hand Sample:
Composed entirely of Ilmenite.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-7
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/6c828d99b676a733752e652e01df0b8a.JPG
e0d6b7a315523f891fffa9b41fde49ff
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-8 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/c00f03dce1d6cad0397b0c3f210b4485.JPG
8b662679d3fe2fe0a4bdd31a0032216a
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-8 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/5c0c220278042b17e97a8f520a850da8.JPG
b6a42fd994d3f7604f305d367a7692eb
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-8 Thin Section Image in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
2
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Pyroxenite
Description
An account of the resource
Hand Sample:
Rock is comprised predominately of a dark fine grained matrix. Some specimens have minor amounts of pink K-feldspar. Clusters of biotite (~1 cm in diameter) appear on one face of the rock.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-8
Spatial Coverage
Spatial characteristics of the resource.
Deldardo Creek, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/f0a7aaa72da3faa9992c145430ccc0de.JPG
8d50b45ee4e49da5943be7da7ee25841
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-9 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/903c937fffccde72cea3ac891de05f90.JPG
7489b21090a5bbde490f4d10835d01e0
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-9 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/9d1f9026d35ee60129947ac018711a8e.JPG
052eb5a78798477fb1eae70c7b5e5b4c
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-9 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Gabbro
Description
An account of the resource
Coarse gabbro, extracted from the southern dike of two east-west dikes N of Deldardo Creek.
Hand Sample:
Evenly distributed dark, light, and white colored coarse-grained (1 mm) crystals. Obvious traces of oxidation from some metallic mineral on each surface of the rock.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-9
Spatial Coverage
Spatial characteristics of the resource.
Deldardo Creek, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/7f5e1ae16c57a8913e938dbc912432cf.JPG
c0c9ad8705a33da56c195d66c84f2aea
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-10 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/01788529f1cbd433622dc7d13ea0977b.JPG
62c0ab92aa162f912de8642239c417af
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-10 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/d51f80d6e8a2982fbd0546be7ede4852.JPG
c4bb5b25ce4b33a1f989462b0e5309df
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-10 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Porphyroblasic gneiss (Fenitized)
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-10
Spatial Coverage
Spatial characteristics of the resource.
Huntsman Gulch, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Fenitized porphyroblastic Gneiss.
Hand Sample:
Entirely coarse-grained rock except for 2 cm wide dark fine grained band. Obvious traces of oxidation appear on all sides, dominating the most weathered sides of the rock.
-
https://dev.geosciencecollections.milne-library.org/files/original/5d64e8f1016a565cb47e0a185c021916.JPG
b06a161a95a933acd76c5e309ac58c16
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-11 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/bf1fa280d7a460c17b2d80ade6e36c43.JPG
8faf6253d32aa37a490d109b72e23284
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-11 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/5a1f42d639c413e9bcb13a82f23926e8.JPG
f126354df705b80fd4623c06ec5602c3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-11 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Carbonatite
Description
An account of the resource
Light brown to almost off-white fine grained Carbonatite. Delicated Barite appears in very thin layers on one side of the rock.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-11
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/cdb6a0892c4129f31cb6748b11e05af1.JPG
83f7268baed461dbc83ff1c5ad2dd742
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-12 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/28e105828ad970350939b50cf2d43201.JPG
348c176fbe0139045bedbeaa8f42c1d9
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-12 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/cf28b2c256ce2010c301b95545946626.JPG
1720a2df887d63c6c94f6e77a2c8b7f5
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-12 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Chert
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-12
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Chert sample found in a Carbonatite.
Hand Sample:
Pink to light brown chert sample that contains small (< 1 mm diameter) vesicles. Very thin quartz veins propagate through the sample in no preferred orientation.
-
https://dev.geosciencecollections.milne-library.org/files/original/cc5fd3cbb6088b005c0c61e44d63c9e0.JPG
310a6573dd99d556e9b446aa01c9cd56
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-13 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/2f3ea356a18b786108c37ef31d61dc2a.JPG
37b06512559d01ae721e96c009e21da4
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-13 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/ef8564cb27814547c62303fe15361403.JPG
91447fc65b19e7789e62acba238bed91
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-13 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
2
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Pyroxenite
Description
An account of the resource
Hand Sample:
Coarse grained pyroxenite showing heavy traces of oxidation on every weathered face of the rock. Large clusters (5-8 mm) of biotite appear throughout the rock.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-13
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/88b47dc6ce2173dcf681537a09f00355.JPG
f02bb6554d40f8509891f89aa1ce8a51
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-14 Hand Sample.
https://dev.geosciencecollections.milne-library.org/files/original/ecb83388847a0f6c84c11f0b9551c7c5.JPG
16027b1c91894a53ea4955473ad09624
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-14 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/52575ecc06e033deb7a08f89a1a32a28.JPG
946e9f3f088015c3e69bffb12515d5b1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-14 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Melilite-bearing rock
Description
An account of the resource
Hand Sample:
Large (1 cm-2 cm) dark grey to translucent quartz crystals comprise the matrix of the rock. Melilite minerals propagate consistently paralell to one another throughout the rock.
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-14
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
-
https://dev.geosciencecollections.milne-library.org/files/original/03edb46d8e6627084fbde1e709ecb77b.JPG
3371422509100dd4827c8cdc85e6a4d6
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-15 Hand Sample - Front View.
https://dev.geosciencecollections.milne-library.org/files/original/8e2808a589dc265afcb73a5651ee91e9.JPG
b39d9a1ac207f2cffa55f1d214f0ecd8
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-15 Hand Sample - Side View.
https://dev.geosciencecollections.milne-library.org/files/original/88c7cd1aa00700df969983eb693c278e.JPG
48a77298893d6729877ac76919b33d74
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-15 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/187b58653448cec413d50b4058cac999.JPG
e3d17d0d05239749d8edc1881c5029ae
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-15 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Uncompahgrite
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-15
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Hand Sample:
Three hand samples from different facies were collected to represent this sample. Out of two of the largest samples one is a dark fine grained rock while the other is coarse grained. Both contain large (5-8 mm) clusters of biotite.
-
https://dev.geosciencecollections.milne-library.org/files/original/1da4b97d7170a06dde14910b0d139246.JPG
2562275d9269c8a5eaa1c5d74fb7caa4
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-16 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/d3ea0aeddfca3023a3e2a0d187586c37.JPG
e130bfde3f83d7f9d0f6ae42f101d12e
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-16 Thin Section in PPL.
https://dev.geosciencecollections.milne-library.org/files/original/6ccf62a1a5286a8164f134e72fd6e572.jpeg
c1bff5a7483426122480588e76af2599
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-16 Hand Sample - Horizontal.
https://dev.geosciencecollections.milne-library.org/files/original/110f7981dbb5fda20bfb6faf46e82c48.jpeg
1e9a35c4af3e99301c379c85a23844f5
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-16 Hand Sample - Horizontal.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Melilite-bearing rock
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-16
Spatial Coverage
Spatial characteristics of the resource.
Beaver Creek, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Hand Sample:
The rock is largely comprised of a very fine grained light green matrix with large (1 x 3 cm) black equant galena crystals. It's pretty magnificent.
-
https://dev.geosciencecollections.milne-library.org/files/original/71818eeecf4b873246f9487eb82d8ceb.jpeg
a356abf24bb6aea1d3f54931ba7a9d54
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-17 Hand Sample - Horizontal.
https://dev.geosciencecollections.milne-library.org/files/original/8e0ba7e9db461dd4bac70edec96c4fb1.JPG
88342df0ab5a7a78610a972ca982a776
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-17 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/012a18dc4c521965beb02ab06d059391.JPG
d49dcb8171a03e47160b0286a08d07a4
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-17 Thin Section in PPL.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Ijolite
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-17
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.
Description
An account of the resource
Hand Sample:
Rock is comprised almost entirely K-Feldspar.
-
https://dev.geosciencecollections.milne-library.org/files/original/7ea2317a3933749fe712dcab68ccbecc.JPG
ba75ef963862c0fd98bdc90093cff6c1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-18 Thin Section in XPL.
https://dev.geosciencecollections.milne-library.org/files/original/5d9865f19114ce148151d01e0f9ec786.JPG
afdf29321f2f4237c812b880973f5aa3
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-18 Thin Section in PPL.
https://dev.geosciencecollections.milne-library.org/files/original/1b45bdc6ad1c622006a92c755453b4d3.jpeg
3e5460f538d0d6f98070455e2cb1e9ab
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
PH-18 Hand Sample - Horizontal.
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
(PH) Powderhorn (Iron Hill) Carbonatite Suite -- Gunnison County, SW Colorado
Description
An account of the resource
The Powderhorn (Iron Hill) Carbonatite is located in Gunnison County in about the center of the southwestern quadrant of Colorado. It is a pear-shaped body which is essentially conical at depth, and is exposed over an area of about 12 square miles. The carbonatite body covers about 2 and a half square miles; About 70 percent of the in pyroxenite which was subsequently intruded by or replaced by nepheline and melilite-bearing rocks; magnetite-perovskite, and carbonatite.
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
References
A related resource that is referenced, cited, or otherwise pointed to by the described resource.
<strong>Start Here:<br /><br /></strong>Mitchell, R.H., 2014, Primary and secondary niobium mineral deposits associated with carbonatites: Ore Geology Reviews, v. 64, p. 626-641, doi:10.1016/j.oregeorev.2014.03.010. <a title="Full Article." href="http://dx.doi.org/10.1016/j.oregeorev.2014.03.010">Full Article.</a><br /><br /><ul><li>Focuses specifically on the formation of niobium in carbonatites but includes an excellent baseline description of carbonatites.</li>
</ul><strong>Additional Resources:<br /><br /></strong>Nash, W.P., 1972, Mineralogy and Petrology of the Iron Hill <span class="search-result-highlight">Carbonatite</span> Complex, Colorado: Geological Society of America Bulletin, <span class="cit-vol"><span class="cit-sep cit-sep-before-article-vol">v. </span>83<span class="cit-sep cit-sep-after-article-vol">, p. </span></span><span class="cit-pages"><span class="cit-first-page">1361</span><span class="cit-sep">-</span><span class="cit-last-page">1382</span></span>, doi: 10.1130/0016-7606(1972)83[1361:MAPOTI]2.0.CO;2. <a title="Full Article." href="http://dx.doi.org/10.1130/0016-7606(1972)83%5B1361:MAPOTI%5D2.0.CO;2">Full Article.</a><br /><br /><ul><li>Bulk rock chemistry description & maps/diagrams showing the location of rocks in the Powderhorn Carbonatite.</li>
</ul>
Temple, R.K., Grogran, R.M., <span>1965, C<span>arbonatite and related alkalic rocks at powder horn, Colorado: <span>Economic geology and the bulletin of the Society of Economic Geologists, v. 60, p. <span>672-692, doi: 10.2113/gsecongeo.60.4.672. <a title="Full Article" href="http://dx.doi.org/10.2113/gsecongeo.60.4.672.">Full Article.</a><br /><br /></span></span></span></span>
<ul><li>Basic information regarding the structure, geochemistry, and petrogenesis of the Powderhorn Carbonatite.</li>
</ul><br />Van Gosen, B. S., Lowers, H. A., 2007, Iron Hill (Powderhorn) carbonatite complex, Gunnison County, CO; a potential source of several uncommon mineral resources: Mining Engineering, v. 59, p. 56-62, doi: N/A <a title="Abstract" href="http://me.smenet.org/abstract.cfm?articleID=1143&page=56">Abstract.</a><br /><br /><ul><li>Mineral resource potential: titanium, iron, vermiculite, vanadium, and nephaline. </li>
</ul><br />Olson, J.C., Hedland, D.C., <span>1981</span>, <span>Alkalic rocks and resources of thorium and associated elements in the Powderhorn District, Gunnison County, Colorado</span>: <span>USGS Numbered Series</span>, Professional Paper , v. <span>1049, <span>p. C1-C34</span>Â </span>Â doi: N/A. <a title="Full Article" href="http://pubs.usgs.gov/pp/1049c/report.pdf">Full Article.</a><br /><br /><ul><li>Extensive report by the USGS regarding rock type and history of formation (geologic ages).</li>
</ul>
Rock
A physical material with a mineral composition.
Number of Thin Sections
Number of thin sections associated with this sample
1
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
A name given to the resource
Gabbro
Description
An account of the resource
Dark gabbro dike separating ijolite and uncompahgrite
Date
A point or period of time associated with an event in the lifecycle of the resource
no date
Contributor
An entity responsible for making contributions to the resource
Western Minerals Inc.
Is Part Of
A related resource in which the described resource is physically or logically included.
<a href="http://www.geosciencecollections.milne-library.org/items/show/33">Powderhorn Carbonatite Minerals Supplementary Information</a>
Identifier
An unambiguous reference to the resource within a given context
PH-18
Spatial Coverage
Spatial characteristics of the resource.
Powderhorn, CO
Accrual Method
The method by which items are added to a collection.
Purchased from Western Minerals Inc.