|
USA | |
| Rocks & Min.:60:86. |
| Dana, Edward Salisbury (1892) A System of Mineralogy (6th ed.) Genth F A (1868) Contributions to mineralogy - No. VII, The American Journal of Science and Arts, 95, 305-321 |
| Genth,F.A and Kerr,W.C,1881,Minerals and Mineral Localities of North Carolina,Geologic Survey |
| Genth,F.A and Kerr,W.C,1881,Minerals and Mineral Localities of North Carolina,Geologic Survey |