Quartz from Goodhouse-Vioolsdrift area, Nama Khoi Local Municipality, Namakwa District Municipality, Northern Cape, South Africa
South Africa | |
| [var. Amethyst] Joubert, G. K. (1937): The pegmatite area south of the Orange River, Namaqualand. Mem. Geol. Survey, S. Africa, No. 31, 172 pp. Gevers, T. W. Partridge, F. C. |