Powellite from South Africa
South Africa | |
| Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa, Linden . |
| Rozendaa, A., & Boshoff, R. (2012). Rare Earth Element Mineralogy and its Recovery from the Neoproterozoic Riviera W–Mo Deposit, South Africa. In Proceedings of the 10th International Congress for Applied Mineralogy (ICAM) (pp. 605-612). Springer Berlin Heidelberg. |