N'Chwaning I Mine, N'Chwaning Mines, Kuruman, Kalahari manganese fields, Northern Cape Province, South Africa

A closed manganese mine owned by Assoc. Manganese Mines of South Africa, Ltd.
The north-western areas, where mining began, were noted for the presence of exceptional rhodochrosite specimens associated with mainly manganite and drusy secondary quartz. The ore consisted here mainly of the Hotazel Supergroup. Later mining shifted to the southern areas. Here well crystallized hausmannite, barite, hydroxyapophyllite, inesite, brucite and celestine where found and rhodochrosite became a rarity.

References:
- Mining Annual Review (1985): 90.
- Rocks & Minerals (1986): 61: 7.
- Cairncross, B. & Balayer, P. (2007): Neufund: Shigait aus den Kalahari-Manganfeldern, Südafrika. LAPIS 32 (4): 23-26 + 50.

- http://www.edu.uni-klu.ac.at/~mmessner/sites/rsa/kuruman/kuruman.htm