Aegirine-augite from Northern Cape, South Africa
South Africa | |
| Gutzmer, J. (1996). Genesis and alteration of the Kalahari and Postmasburg manganese deposits, Griqualand West, South Africa (Doctoral dissertation, Rand Afrikaans University). |
| Berger, Vladimir I., Singer, Donald A., Orris, Greta J. (2009) Carbonatites of the World, Explored Deposits of Nb and REE—Database and Grade and Tonnage Models . Open-File Report 2009-1139. U.S. Geological Survey doi:10.3133/ofr20091139 |
Goodhouse-Vioolsdrift area, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa