| Aegirine | |
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| Formula: | NaFe3+Si2O6 |
| Reference: | Minerals of South Africa |
| Localities: | Recorded from at least 2 other localities in this region. |
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| Alabandite |  |
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| Formula: | Mn2+S |
| Reference: | Collection Elmar Lackner |
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| Photo: © Simone Citon. Alabandite from Postmasburg, Northern Cape Province, South Africa |
| Albite | |
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| Formula: | NaAlSi3O8 |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Amesite | |
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| Formula: | Mg2Al(AlSiO5)(OH)4 |
| Localities: | Magoloring farm, Postmasburg, Northern Cape Province, South Africa
Bishop farm, Postmasburg, Northern Cape Province, South Africa
Japie's Rust, Postmasburg, Northern Cape Province, South Africa
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| Armbrusterite | |
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| Formula: | K5Na7Mn15[(Si9O22)4](OH)10 · 4H2O |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Banalsite | |
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| Formula: | BaNa2[Al2Si2O8]2 |
| Reference: | Minerals of South Africa |
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| Baryte | |
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| Formula: | BaSO4 |
| Localities: | Kapstewel, Postmasburg, Northern Cape Province, South Africa
Gamagara Ridge, Gloucester Farm, Postmasburg, Northern Cape Province, South Africa
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| Bixbyite |  |
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| Formula: | (Mn3+,Fe3+)2O3 |
| Localities: | Reported from at least 8 localities in this region. |
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| Photo: © Elmar Lackner. Bixbyite from Postmasburg, Northern Cape Province, South Africa |
| Braunite | |
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| Formula: | Mn2+Mn3+6(SiO4)O8 |
| Reference: | Minerals of South Africa |
| Localities: | Recorded from at least 7 other localities in this region. |
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| Calcite | |
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| Formula: | CaCO3 |
| Reference: | Minerals of South Africa |
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| 'Chert' | |
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| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Cryptomelane | |
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| Formula: | K(Mn4+,Mn2+)8O16 |
| Reference: | Minerals of South Africa |
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| Diaspore |  |
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| Formula: | AlO(OH) |
| Reference: | ; Minerals of South Africa |
| Localities: | Recorded from at least 7 other localities in this region. |
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| Photo: © Elmar Lackner. Diaspore from Glosam mine, Postmasburg, Northern Cape Province, South Africa |
| Diaspore var: Mangan-diaspore |  |
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| Locality: | Glosam mine, Postmasburg, Northern Cape Province, South Africa |
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| Photo: © Leon Hupperichs. Mangan-diaspore from Glosam mine, Postmasburg, Northern Cape Province, South Africa |
| Ephesite |  |
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| Formula: | LiNaAl2(Al2Si2O10)(OH)2 |
| Reference: | ; Minerals of South Africa |
| Localities: | Recorded from at least 3 other localities in this region. |
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| Photo: © Peter Kohorst. Ephesite from Gamagara Ridge, Gloucester Farm, Postmasburg, Northern Cape Province, South Africa |
| Gamagarite (TL) | |
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| Formula: | Ba2(Fe3+,Mn3+)(VO4)2(OH) |
| Type Locality: | Gamagara Ridge, Gloucester Farm, Postmasburg, Northern Cape Province, South Africa |
| Reference: | Amer.Min.(1943) 28, 329-335; The Manganese Adventure: The South African Manganese Fields |
| Localities: | Recorded from at least 1 other locality in this region. |
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| Gibbsite | |
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| Formula: | Al(OH)3 |
| Reference: | Minerals of South Africa |
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| Hausmannite |  |
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| Formula: | MnMn2O4 |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Photo: Hausmannite from Postmasburg, Northern Cape Province, South Africa |
| Hematite | |
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| Formula: | Fe2O3 |
| Reference: | Minerals of South Africa |
| Localities: | Recorded from at least 3 other localities in this region. |
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| Hydroxylapatite | |
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| Formula: | Ca5(PO4)3(OH) |
| Locality: | Gamagara Ridge, Gloucester Farm, Postmasburg, Northern Cape Province, South Africa |
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| Kaolinite | |
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| Formula: | Al2(Si2O5)(OH)4 |
| Locality: | Paling farm, Postmasburg, Northern Cape Province, South Africa |
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| Kentrolite | |
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| Formula: | Pb2Mn3+2(Si2O7)O2 |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| 'K Feldspar' | |
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| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Lithiophorite |  |
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| Formula: | (Al,Li)MnO2(OH)2 |
| Reference: | Minerals of South Africa |
| Localities: | Recorded from at least 2 other localities in this region. |
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| Photo: © Maggie Wilson. Lithiophorite from Gloucester Farm, Postmasburg, Northern Cape Province, South Africa |
| 'Manganbixbyite' | |
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| Manganese | |
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| Formula: | Mn |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Manganite | |
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| Formula: | Mn3+O(OH) |
| Reference: | Minerals of South Africa |
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| Norrishite ? | |
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| Formula: | KLiMn3+2(Si4O10)O2 |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa - erroneously reported |
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| Opal | |
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| Formula: | SiO2 · nH2O |
| Reference: | Minerals of South Africa |
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| 'Partridgeite' | |
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| Formula: | Mn2O3 |
| Reference: | Economic Geology (1996) 91:1435-1454 |
| Localities: | Recorded from at least 2 other localities in this region. |
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| 'Psilomelane' | |
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| Reference: | Minerals of South Africa |
| Localities: | Recorded from at least 1 other locality in this region. |
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| Pyrolusite | |
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| Formula: | MnO2 |
| Reference: | Minerals of South Africa |
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| Pyrophyllite | |
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| Formula: | Al2(Si4O10)(OH)2 |
| Reference: | Minerals of South Africa |
| Localities: | Recorded from at least 1 other locality in this region. |
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| Quartz | |
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| Formula: | SiO2 |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Ramsdellite | |
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| Formula: | Mn4+O2 |
| Reference: | Minerals of South Africa |
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| Romanèchite | |
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| Formula: | (Ba,H2O)2Mn5O10 |
| Locality: | Glosam mine, Postmasburg, Northern Cape Province, South Africa |
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| Sérandite | |
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| Formula: | Na(Mn2+,Ca)2(HSi3O9) |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Strontianite | |
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| Formula: | SrCO3 |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Sugilite | |
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| Formula: | K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30] |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Witherite | |
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| Formula: | BaCO3 |
| Locality: | Borehole AKH49, Sishen, Kathu, Postmasburg, Northern Cape Province, South Africa |
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| Zunyite |  |
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| Formula: | Al13Si5O20(OH,F)18Cl |
| Reference: | Minerals of South Africa |
| Localities: | Recorded from at least 2 other localities in this region. |
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| Photo: Zunyite from Postmasburg, Northern Cape Province, South Africa |
41 entries listed. 34 valid minerals. 1 type locality (valid mineral).
Economic Geology (1996): 91: 1414-1434.
Cairncross, B, Beukes, N, Gutzmer, J (1997): The Manganese Adventure
Mineralogical Magazine (1997): 61: 213-231.
Mineral and Locality Search
