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N'Chwaning II Mine, N'Chwaning Mines, Kuruman, Kalahari manganese field, Northern Cape Province, South Africa

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List of minerals arranged by Strunz 10th Edition classification


Group 1 - Elements
'Copper'1.AA.05Cu
Group 2 - Sulphides and Sulfosalts
'Cinnabar'2.CD.15aHgS
'Galena'2.CD.10PbS
Marcasite2.EB.10aFeS2
Pyrite2.EB.05aFeS2
Sphalerite2.CB.05aZnS
Group 3 - Halides
'Creedite'3.CG.15Ca3SO4Al2F8(OH)2 · 2H2O
Group 4 - Oxides and Hydroxides
'Bixbyite'4.CB.10Mn3+2O3
'Brucite'4.FE.05Mg(OH)2
'Diaspore'4.FD.10AlO(OH)
'Goethite'4.00.α-Fe3+O(OH)
'Groutite'4.FD.10Mn3+O(OH)
'Hausmannite'4.BB.10Mn2+Mn3+2O4
'Hematite'4.CB.05Fe2O3
Jacobsite4.BB.05Mn2+Fe3+2O4
Lepidocrocite4.FE.15γ-Fe3+O(OH)
Manganite4.FD.15Mn3+O(OH)
Marokite4.BC.05CaMn3+2O4
Portlandite4.FE.05Ca(OH)2
Pyrochroite4.FE.05Mn(OH)2
Quartz4.DA.05SiO2
Todorokite4.DK.10(Na,Ca,K,Ba,Sr)1-x(Mn,Mg,Al)6O12 · 3-4H2O
Group 5 - Nitrates and Carbonates
'Aragonite'5.AB.15CaCO3
'Calcite'5.AB.05CaCO3
Kutnohorite5.AB.10Ca(Mn,Mg,Fe)(CO3)2
Rhodochrosite5.AB.05MnCO3
Group 6 - Borates
'Gaudefroyite'6.AB.60Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
'Gowerite'6.EC.10Ca[B5O8(OH)][B(OH)3] · 3H2O
Sussexite6.BA.15Mn2+BO2(OH)
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
'Baryte'7.AD.35BaSO4
'Celestine'7.AD.35SrSO4
'Charlesite' ?7.DG.15Ca6(Al,Si)2(SO4)2[B(OH)4](OH,O)12 · 26H2O
'Despujolsite'7.DF.25Ca3Mn4+(SO4)2(OH)6 · 3H2O
'Ettringite'7.DG.15Ca6Al2(SO4)3(OH)12 · 26H2O
'Gypsum'7.CD.40CaSO4 · 2H2O
Jouravskite7.DG.15Ca3Mn4+(SO4)(CO3)(OH)6 · 12H2O
Shigaite ?7.DD.35Mn6Al3(OH)18[Na(H2O)6][SO4]2 · 6H2O
Sturmanite7.DG.15Ca6(Fe3+,Al,Mn3+)2(SO4)2[B(OH)4](OH)12 · 25H2O
Thaumasite7.DG.15Ca3(SO4)[Si(OH)6](CO3) · 12H2O
Group 9 - Silicates
'Aegirine'9.DA.25NaFe3+Si2O6
'Afwillite'9.AG.75Ca3(HSiO4)2 · 2H2O
'Andradite'9.AD.25Ca3Fe3+2(SiO4)3
'Bementite'9.EE.05Mn7Si6O15(OH)8
'Braunite'9.AG.05Mn2+Mn3+6(SiO4)O8
'Braunite-II'9.AG.05CaMn3+14(SiO4)O20
'Bultfonteinite'9.AG.80Ca2(HSiO4)F · H2O
'Bustamite'9.DG.05CaMn2+(Si2O6)
'Caryopilite'9.ED.15Mn2+3Si2O5(OH)4
'Clinochlore'9.EC.55Mg5Al(AlSi3O10)(OH)8
'Datolite'9.AJ.20Ca(HBSiO5)
'Diopside'9.DA.15CaMgSi2O6
'Friedelite'9.EE.10Mn2+8Si6O15(OH,Cl)10
'Gageite'9.DH.35Mn21(Si4O12)2O3(OH)20
'Gonyerite'9.EC.55(Mn2+,Mg)5Fe3+(Fe3+Si3O10)(OH)8
'Grossular'9.AD.25Ca3Al2(SiO4)3
var: Hibschite9.AD.25Ca3Al2(SiO4)3-x(OH)4x
'Guidottiite' (TL)9.ED.15Mn2Fe3+(Fe3+SiO5)(OH)4
'Henritermierite'9.AD.25Ca3(Mn3+,Al)2(SiO4)2(OH)4
Hydroxyapophyllite-(K)9.EA.15KCa4(Si8O20)(OH,F) · 8H2O
Inesite9.DL.05Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Leucophoenicite9.AF.60Mn2+7(SiO4)3(OH)2
Lizardite9.ED.15Mg3(Si2O5)(OH)4
Manganvesuvianite (TL)9.BG.35Ca19Mn3+(Al,Mn3+,Fe3+)10(Mg,Mn2+)2(Si2O7)4(SiO4)10O(OH)9
Mozartite9.AG.60CaMn3+(SiO4)(OH)
Nchwaningite (TL)9.DB.30Mn2+2(SiO3)(OH)2 · H2O
Olmiite (TL)9.AF.90CaMn2+[SiO3(OH)](OH)
Orlymanite9.EE.30Ca4Mn3Si8O20(OH)6 · 2H2O
Oyelite9.HA.80Ca10Si8B2O29 · 12.5H2O
Pectolite9.DG.05NaCa2Si3O8(OH)
Phlogopite9.EC.20KMg3(AlSi3O10)(OH)2
Poldervaartite ?9.AF.90CaCa[SiO3(OH)](OH)
Prehnite9.DP.20Ca2Al2Si3O10(OH)2
Richterite9.DE.20{Na}{NaCa}{Mg5}(Si8O22)(OH)2
Ruizite9.BJ.35Ca2Mn3+2[Si4O11(OH)2](OH)2·2H2O
Saponite9.EC.45Ca0.25(Mg,Fe)3((Si,Al)4O10)(OH)2 · nH2O
Sugilite9.CM.05K(Na,□)2Li3(Fe,Mn,Al,Zr)2[Si12O30]
Tephroite9.AC.05Mn2+2SiO4
Vesuvianite9.BG.35(Ca,Na,☐)19(Al,Mg,Fe3+)13(☐,B,Al,Fe3+)5(Si2O7)4(SiO4)10(OH,F,O)10
Xonotlite9.DG.35Ca6(Si6O17)(OH)2
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-
'Glauconite'-(K,Na)(Mg,Fe2+,Fe3+)(Fe3+,Al)(Si,Al)4O10(OH)2
Kenotobermorite (TL)-[Ca4Si6O15(OH)2·2H2O]·3H2O
Kenotobermorite-4O-
Lavinskyite ?-K(Li,Cu,Mg,Na)2Cu6(Si4O11)2(OH)4
Marshallsussmanite-NaCaMnSi3O8(OH)

References

Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
Hochleitner, R. (1986) Sturmanit und Ettringit aus den Kalahari-Manganfeldern. LAPIS 11 (10), 19-24.
Beukes, G.J., De Bruiyn, H. and Van der Westhuizen, W.A. (1993) Gaudefroyite from the Kalahari manganese field, South Africa. Neues Jahrbuch Mineralogie, Monatshefte, 385–392.
Gutzmer, J. (1994) Hydrothermale Alteration von Manganerzen der Nchwaning Mine, Kalahari Manganerzfeld, Suedafrika. Diploma dissertation (unpublished). Clausthal University of Technology, 158 pages.
Gutzmer, J. (1994) Hydrothermale Alteration von Manganerzen der Nchwaning Mine, Kalahari Manganerzfeld, Suedafrika. Mitteilungsblatt. Clausthal University of Technology, 53–54.
Cairncross, B., and Dixon, R. (1995) Minerals of South Africa. The Geological Society of South Africa, Linden 2014, RSA.
Nyfeler, D., Armbruster, T., Dixon, R. and Bermanec, V. (1995) Nchwaningite, Mn2+2SiO3(OH)2•H2O, a new pyroxene related chain silicate from the Nchwaning mine, Kalahari manganese field, South Africa. American Mineralogist, 80, 377–386.
Cairncross, B., Beukes, N. and Gutzmer, J. (1997) The Manganese Adventure – The South African Manganese Fields. Associated Ore & Metal Corporation Limited, Johannesburg, Republic of South Africa.
Cairncross, B., Tsikos, H. and Harris, C. (2000) Prehnite from the Kalahari manganese field, South Africa, and its possible implications. South African Journal of Geology, 103, 231–236.
Cairncross, B., Gutzmer, J. and Pretorius, A. (2002) Spektakulärer Neufund: Poldervaartit aus der N’Chwaning II-Mine, Kalahari, Südafrika. Lapis, 27, 30–34.
Cairncross, B. (2004) Field Guide To Rocks & Minerals Of Southern Africa.
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., and Beukes, N. J., (2013) The Kalahari Manganese Field, the adventure continues. Struik Nature Publishers, Cape Town, South Africa.

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