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South Africa | |
| Palache, Charles, Berman, Harry, Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Ect. John Wiley and Sons, New York. |
- Nama Khoi Local Municipality
| 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. |
| Baldwin, J. R. (1994). Lithium and tantalum mineralization in rare-element pegmatites from southern Africa (Doctoral dissertation, University of St Andrews). |
| Cairncross, B., Dixon, R. (1995) Minerals of South Africa. Geological Society of South Africa, Linden . |
| Baldwin, J. R. (1994). Lithium and tantalum mineralization in rare-element pegmatites from southern Africa (Doctoral dissertation, University of St Andrews). |