- Namakwa District Municipality
- Kamiesberg Local Municipality
| Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa, Linden . Moore, J. M., Waters, D. J., & Niven, M. L. (1990). Werdingite, a new borosilicate mineral from the granulite facies of the western Namaqualand metamorphic complex, South Africa. American Mineralogist, 75(3-4), 415-420. |