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USA | |
| [var. Perthite] Redden, Jack Allison (1959) Beryl deposits of the Beecher No.3 Black Diamond pegmatite, Custer County, South Dakota. USGS Bulletin: 1072- |
| [var. Perthite] U.S. Geological Survey Professional Paper 297 |
| [var. Perthite] USGS Prof Paper 297F |
| [var. Perthite] Am Min (1946), 31:192 |
| [var. Perthite] [MinRec 4:111, 4:131-136] |
| [var. Perthite] U.S. Geological Survey Professional Paper 297 |
| [var. Perthite] USGS Prof Paper 297F |
| Rocks & Min.: 57:155. |
| [var. Perthite] Grice, Joel D., Peacor, Donald R., Robinson, George W., Van Velthuizen, Jerry, Roberts, Willard L., Campbell, Thomas J., Dunn, Pete J. (1985) Tiptopite (Li,K,Na,Ca,β»)8Be6(PO4)6(OH)4, a new mineral species from the Black Hills, South Dakota. The Canadian Mineralogist, 23 (1) 43-46 Dunn, P.J., Roberts, W.L., Campbell, T.J., and Leavens, P.B. (1983) Red Montgomeryite and associated minerals from the Tip Top Pegmatite with notes on kingsmountite and calcioferrite. The Mineralogical Record: 14(3): 195-197. |
| [var. Perthite] USGS Prof Paper 297F |
| [var. Perthite] USGS Prof Paper 297D |
| [var. Perthite] USGS Prof Paper 297D |
| [var. Perthite] USGS Prof Paper 297F |
| [var. Perthite] Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technology |
| [var. Perthite] U.S. Geological Survey Professional Paper 297 |
| [var. Perthite] U.S. Geological Survey Professional Paper 297 |
| [var. Perthite] USGS Prof Paper 297D |
| [var. Perthite] USGS Prof Paper 297F |