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South Africa | |
- John Taolo Gaetsewe District Municipality
- Joe Morolong Local Municipality
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| Pagano et al (2008) The Mineralogical Record: 39: 373-381.
Bonazzi, P., Bindi, L., Medenbach, O., Pagano, R., Lampronti, Menchetti, S. (2007): Olmiite, CaMn[SiO3(OH)](OH), the Mn-dominant analogue of poldervaartite, a new mineral species from Kalahari manganese fields (Republic of South Africa), Mineralogical Magazine: 71: 193-291.
Cairncross, B., Gutzmer, J. & Pretorius, A. (2002): Spektakulärer Neufund: Poldervaartit aus der N'Chwaning II - Mine, Kalahari, Südafrika. Lapis, 27(5), 30-34. |
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| Gutzmer, Jens, Cairncross, Bruce (2002) Spectacular Minerals from the Kalahari Manganese Field, South Africa. Rocks & Minerals, 77 (2) 94-107 doi:10.1080/00357529.2002.9926665
von Bezing, L., Gutzmer, J. (1994) Das Kalahari Manganerzfeld und seine Mineralien (II) Mineralien Welt, 5 (5) 41-59
Dai, Y.S., Harlow, G.E., McGhie, A.R. (1993) Poldervaartite, Ca(Ca0.5Mn0.5)(SiO3OH)(OH), a new acid nesosilicate from the Kalahari manganese field, South Africa: Crystal structure and description. American Mineralogist: 78: 1082-1087.
Gutzmer, J. & Cairncross, B. (2001): Seltene Mineralien aus dem Kalahari-Manganerzfeld, Südafrika. Lapis, 26(10), 32-42 |
Wessels Mine, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa