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USA | |
| Dean, Lewis S. (1995) Alabama Mineral Locality Index. Rocks & Minerals, 70 (5) 320-333 doi:10.1080/00357529.1995.9926642 |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Dean, Lewis S. (1995) Alabama Mineral Locality Index. Rocks & Minerals, 70 (5) 320-333 doi:10.1080/00357529.1995.9926642 |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Dean, Lewis S. (1995) Alabama Mineral Locality Index. Rocks & Minerals, 70 (5) 320-333 doi:10.1080/00357529.1995.9926642 |
| Dean, Lewis S. (1995) Alabama Mineral Locality Index. Rocks & Minerals, 70 (5) 320-333 doi:10.1080/00357529.1995.9926642 |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Cook, Robert B., Smith, W. Everett (1982) Mineralogy of Alabama. Bulletin 120. Geological Survey of Alabama |
| Prejeant,Kathryn.,Perez,Michelle.,White,John Charles.,and Ren,Minghum (2011) Geology Of The Elliott County Kimberlite,Kentucky Eastern Kentucky University |
| DoI Bur. of Mines ROI #6885, Williams, R.L. (1967): 23. |
| Manchester, James G. (1931) The Minerals of New York City and its Environs. Bulletin of the New York Mineralogical Club Vol. 3 (1) New York Mineralogical Club |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
| Dietrich, R. V. (1990) Minerals of Virginia. Virginia Geological Survey. |
Road cut, Bassett, Henry County, Virginia, USA