Corundum from Free State, South Africa
South Africa | |
| Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Contributions to Mineralogy and Petrology 26, 75-123. |
Gibson R, Reimold W (2008) Geology of the Vredefort Impact Structure, South Africa Council of Geoscience Memoir 97 | |
| Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Contributions to Mineralogy and Petrology 26, 75-123. |
| Mathias, M., Siebert, J.C., and Rickwood, P.C. (1970): Contributions to Mineralogy and Petrology 26, 75-123. |
| Meyer, N. A. (2021). Diamonds and Their Inclusions From the Koffiefontein Mine. Doctor of Philosophy, Department of Earth and Atmospheric Sciences, University of Alberta |