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USA | |
| Charlotte Gem & Mineral Club |
| Hurst, V. j., Crawford, T. j., and Sandy, j., 1966, Mineral Resources of the Central Savannah River Area: Washington, D. C., U.S. Dept. Commerce Econ. Dev. Admin., v. 1, 297 and Figure 68. |
| Hurst, V. j., Crawford, T. j., and Sandy, j., (1966), Mineral Resources of the Central Savannah River Area: Washington, D. C., U.S. Dept. Commerce Econ. Dev. Admin., v. 1, 296. |
| Cook, Robert B. (1978) Minerals of Georgia: Their Properties and Occurrences. Bulletin 92. State of Georgia Department of Natural Resources |