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Black Rock Mine, Black Rock, Kalahari manganese field, Northern Cape Province, South Africa

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Latitude & Longitude (WGS84): 27° 8' South , 22° 50' East
Latitude & Longitude (decimal): -27.1333333333, 22.8333333333
A manganese property owned by Associated Manganese Mines of South Africa, Ltd.

Mineral List

24 entries listed. 22 valid minerals. 1 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc.

The above list contains all mineral locality references listed on This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.


PEACOR, D.R., DUNN, P.J. & DUGGAN, M. (1983) Sturmanite, a ferric iron, boron analogue of ettringite. Canadian Mineralogist 21, 705-709.

Mining Annual review (1985) 90.

HOCHLEITNER, R. (1986) Sturmanit und Ettringit aus den Kalahari-Manganfeldern. Lapis, Jg. 10, Nr. 10, 19-24.

Von Bezing, K. L. et al. (1991) The Kalahari manganese field: An Update, Mineralogical Record 22(4) 279-302.

WEINER, K.L. & HOCHLEITNER, R. (1994) Sturmanit - Steckbrief. Lapis, Jg. 19, Nr. 2, 9-11.

Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa

Cairncross, B., Beukes, N., and Gutzmer, J., (1997) The Manganese Adventure, The South African Manganese Fields. Associated Ore & Metal Corporation Limited, Johannesburg, Republic of South Africa.

Cairncross, B., and Beukes, N. J., (2013) The Kalahari Manganese Field, the adventure continues. Struik Nature Publishers, Cape Town, South Africa.

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