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Hematite (pneumatolitic). Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-4105, Fe_2O_3. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Samarskite. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-8030b, (FeYU)_2(NbTiTa)_2O_7. This image is in the public domain pursuant to an agreement dated August 10, between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Chromite (Spinel). Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-6032, FeCr_2O_4. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Aragonite. Pen for scale. Aragon, Spain. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. No BYU index, CaCO_3. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Montmorillonite. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. No BYU index, (CaNa)_1(AlMgFe)_2(SiAl)_4O_10(OH)_2 x n(H_2O). This image is in the public domain pursuant to an agreement dated August 10, between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Rhodochrosite. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 6-4024, MnCO_3. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Realgar. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 2-4122, AsS. This image is in the public domain pursuant to an agreement dated August 10, between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Orpiment. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 2-8064, As_2S_3. This image is in the public domain pursuant to an agreement dated August 10, between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Columbite-Tantalite. Pen for scale. Collected by Richard Moyle in the Mica Load Pegmatite, Gunnison, Colorado, 1964. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-8081, (FeMn)(NbTa)_2O_5. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Coal. Quarter for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 1-1011a. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Corundum, variety Sapphire. Collected in Montana. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. No BYU index, Al_2O_3. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Cuprite. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-8001a, Cu_2O. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Cuprite. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-8002, Cu_2O. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Copper native. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 1-4033b, Cu. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Native copper (14x magnification). Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 1-4073d-14x-. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Chalcosiderite. Close view. Collected from Cornwall, England. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 9-3062, CuFe_6(PO_4)_4(OH)_8 x 4H_2O. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Copper native. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 1-4056a, Cu. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Pyrrhotite. Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 2-4002, Fe_1 - _xS. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Hematite (martite). Pen for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 4-4047b, Fe_2O_3. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer.
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Sulfur. U.S. quarter for scale. Mineral collection of Brigham Young University Department of Geology, Provo, Utah. Photograph by Andrew Silver. BYU index 1-1049a, S. This image is in the public domain pursuant to an agreement dated August 10, 2006 between Peter J. Modreski, USGS Communications and Outreach, and the Brigham Young University (BYU) Geology Department. Please credit the Brigham Young University Geology Department and the individual photographer