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South Africa | |
- Namakwa District Municipality
| Cairncross, Bruce (2004) History of the Okiep Copper District, Namaqualand, Northern Cape Province, South Africa. The Mineralogical Record, 35 (4) 289-317 |
| Raith, J.G., and Stein, H.J. (2000): Mineralium Deposita 35, 741-753. |
| Raith, J.G., and Stein, H.J. (2000): Mineralium Deposita 35, 741-753. |
| P. G. Sonhnge (1950) The Nababeep Near West Tungsten Mine, South Africa. American Mineralogist 35:931-940 |
| Raith, J.G., and Stein, H.J. (2000): Mineralium Deposita 35, 741-753. Econ Geol. (1995) 90:1934-1954 |