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USA | |
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| Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635 |
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| Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology |
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| Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology |
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| Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology
Palache, C., Berman, H., & Frondel, C. (1951), The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II: 983 |
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| Smith, Arthur E., Fritzsch, Eric (2000) SOUTH DAKOTA. Rocks & Minerals, 75 (3) 156-169 doi:10.1080/00357520009605635 |
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| Peacor, Donald R., Dunn, Pete J., Roberts, Willard L., Campbell, Thomas J., Simmons, William B. (1984) Sinkankasite, a new phosphate from the Barker pegmatite, South Dakota. American Mineralogist, 69 (3-4) 380-382 |
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| Rocks & Min.:60:116. |
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| (2005) Mineral Resources Data System (MRDS), US Geological Survey.
Norton, James J. (1964) Pegmatites and other Precambrian Rocks in the Southern Black Hills
Rocks & Minerals: 57: 160 &/or 60: 110 & 112.
Geology and mineral deposits of some pegmatites in the southern Black Hills, South Dakota. USGS Professional Paper 297E. |
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| Černý, P., Roberts, W. L., Ercit, T. S., Chapman, R. (1985) Wodginite and associated oxide minerals from the Peerless pegmatite, Pennington County, South Dakota. American Mineralogist, 70 (9-10) 1044-1049
USGS Prof Paper 297A |
