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Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africai
Regional Level Types
Doornfontein Farm- not defined -
Western BeltBelt
Gamagara RidgeRidge
Northern CapeProvince
South AfricaCountry

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PhotosMapsSearch
08266950017272082568305.jpg
Zunyite

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
03685590017272082569820.jpg
Diaspore

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
08212860017271984717180.jpg
Zunyite

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
06733000017271984698731.jpg
Zunyite

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
03685590017272082569820.jpg
Diaspore

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
08212860017271984717180.jpg
Zunyite

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
06733000017271984698731.jpg
Zunyite

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
03685590017272082569820.jpg
Diaspore

Doornfontein Farm, Western Belt, Gamagara Ridge, Northern Cape, South Africa
Latitude & Longitude (WGS84):
28° 11' 1'' South , 23° 1' 42'' East
Latitude & Longitude (decimal):
-28.18364,23.02838
GeoHash:
G#: kdbrsj2f2
GRN:
S19E15
Köppen climate type:
BSk : Cold semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Postmasburg30,089 (2018)17.1km
Kathu9,219 (2012)54.3km
Mindat Locality ID:
56756
Long-form identifier:
mindat:1:2:56756:2
GUID (UUID V4):
0


Doornfontein farm (M82) was the first farm to be mined for manganese by T. L. H. Shone in the Postmasburg area in 1922.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


10 valid minerals.

Detailed Mineral List:

ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Bixbyite-(Mn)
Formula: Mn3+2O3
ⓘ Braunite
Formula: Mn2+Mn3+6(SiO4)O8
ⓘ Diaspore
Formula: AlO(OH)
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Hematite
Formula: Fe2O3
ⓘ Lithiophorite
Formula: (Al,Li)MnO2(OH)2
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ 'Psilomelane'
ⓘ Pyrolusite
Formula: Mn4+O2
ⓘ Quartz
Formula: SiO2
ⓘ Zunyite
Formula: Al13Si5O20(OH,F)18Cl

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘHematite4.CB.05Fe2O3
ⓘBixbyite-(Mn)4.CB.10Mn3+2O3
ⓘQuartz4.DA.05SiO2
ⓘPyrolusite4.DB.05Mn4+O2
ⓘDiaspore4.FD.10AlO(OH)
ⓘLithiophorite4.FE.25(Al,Li)MnO2(OH)2
Group 9 - Silicates
ⓘBraunite9.AG.05Mn2+Mn3+6(SiO4)O8
ⓘZunyite9.BJ.55Al13Si5O20(OH,F)18Cl
ⓘMuscovite
var. Illite		9.EC.15K0.65Al2.0[Al0.65Si3.35O10](OH)2
ⓘ9.EC.15KAl2(AlSi3O10)(OH)2
Unclassified
ⓘ'Psilomelane'-
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ DiasporeAlO(OH)
Hⓘ GoethiteFe3+O(OH)
Hⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Hⓘ Lithiophorite(Al,Li)MnO2(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
LiLithium
Liⓘ Lithiophorite(Al,Li)MnO2(OH)2
OOxygen
Oⓘ Bixbyite-(Mn)Mn23+O3
Oⓘ BrauniteMn2+Mn63+(SiO4)O8
Oⓘ DiasporeAlO(OH)
Oⓘ GoethiteFe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Oⓘ Lithiophorite(Al,Li)MnO2(OH)2
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ PyrolusiteMn4+O2
Oⓘ QuartzSiO2
Oⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
AlAluminium
Alⓘ DiasporeAlO(OH)
Alⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Alⓘ Lithiophorite(Al,Li)MnO2(OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ ZunyiteAl13Si5O20(OH,F)18Cl
SiSilicon
Siⓘ BrauniteMn2+Mn63+(SiO4)O8
Siⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ QuartzSiO2
Siⓘ ZunyiteAl13Si5O20(OH,F)18Cl
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
ClChlorine
Clⓘ ZunyiteAl13Si5O20(OH,F)18Cl
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ Muscovite var. IlliteK0.65Al2.0[Al0.65Si3.35O10](OH)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
CaCalcium
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
MnManganese
Mnⓘ Bixbyite-(Mn)Mn23+O3
Mnⓘ BrauniteMn2+Mn63+(SiO4)O8
Mnⓘ Lithiophorite(Al,Li)MnO2(OH)2
Mnⓘ PyrolusiteMn4+O2
FeIron
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate
South Africa

This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more minerals from this site, please register so you can add to our database. This locality information is for reference purposes only. You should never attempt to visit any sites listed in mindat.org without first ensuring that you have the permission of the land and/or mineral rights holders for access and that you are aware of all safety precautions necessary.

References

https://sahris.sahra.org.za/sites/default/files/additionaldocs/Appendix%20O%20Heritage%20study.pdf
Gutzmer, J. (1996). Genesis and alteration of the Kalahari and Postmasburg manganese deposits, Griqualand West, South Africa (Doctoral dissertation, Rand Afrikaans University).
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