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Tweefontein Farm, Mokopane (Potgietersrus), Mogalakwena, Waterberg District, Limpopo, South Africai
Regional Level Types
Tweefontein FarmFarm
Mokopane (Potgietersrus)- not defined -
Mogalakwena- not defined -
Waterberg DistrictDistrict
LimpopoProvince
South AfricaCountry

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Key
Latitude & Longitude (WGS84):
24° 0' 10'' South , 28° 49' 60'' East
Latitude & Longitude (decimal):
Locality type:
Nearest Settlements:
PlacePopulationDistance
Mokopane101,090 (2012)27.8km


A chromium mine. Located about 15 km NW of Mokopane.
238 KR (1033)

Regions containing this locality

Somali Plate (Somalia Plate)Tectonic Plate
Transvaal, South AfricaProvince (Former)
Bushveld Complex, South AfricaComplex

Select Mineral List Type

Standard Detailed Strunz Dana Chemical Elements

Mineral List


19 valid minerals. 1 (TL) - type locality of valid minerals.

Detailed Mineral List:

Bornite
Formula: Cu5FeS4
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Braggite
Formula: (Pt,Pd,Ni)S
Reference: Cabri, L. J. & Chen, T.T. (1976) : Stibiopalladinite from the type locality. American Mineralogist. 61, 1249-1254; Cairncross, B. and Dixon, R., (1995) Minerals of South Africa. The Geological Society of South Africa, pg 190;
Chalcopyrite
Formula: CuFeS2
Reference: Buchanan, D.L., Nolan, J. Suddaby, P., Rouse, J. E., Viljoen, M.J. & Davenport, W.J. (1981): The genesis of sulfide mineralization in a portion of ther Potgietersrus limb of the Bushveld Complex. Economic Geolology. 76:568-579; Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
'Chlorite Group'
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Chromite
Formula: Fe2+Cr3+2O4
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Reference: Wilson, W. E. (2010): Sperrylite from the Tweefontein Farm, Limpopo Province, South Africa. Mineralogical Record. 41, 147-155
Cooperite
Formula: PtS
Reference: Cabri, L. J. & Chen, T.T. (1976) : Stibiopalladinite from the type locality. American Mineralogist. 61, 1249-1254
Fayalite
Formula: Fe2+2SiO4
Reference: Buchanan, D.L., Nolan, J. Suddaby, P., Rouse, J. E., Viljoen, M.J. & Davenport, W.J. (1981): The genesis of sulfide mineralization in a portion of ther Potgietersrus limb of the Bushveld Complex. Economic Geolology. 76:568-579
Forsterite
Formula: Mg2SiO4
Reference: Buchanan, D.L., Nolan, J. Suddaby, P., Rouse, J. E., Viljoen, M.J. & Davenport, W.J. (1981): The genesis of sulfide mineralization in a portion of ther Potgietersrus limb of the Bushveld Complex. Economic Geolology. 76:568-579
Isoferroplatinum
Formula: Pt3Fe
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Laurite
Formula: RuS2
Reference: Wilson, W. E. (2010): Sperrylite from the Tweefontein Farm, Limpopo Province, South Africa. Mineralogical Record. 41, 147-155; Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Mertieite-II
Formula: Pd8Sb2.5As0.5
Reference: Cabri, L. J. & Chen, T.T. (1976) : Stibiopalladinite from the type locality. American Mineralogist. 61, 1249-1254
Pentlandite
Formula: (FexNiy)Σ9S8
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Platinum
Formula: Pt
Reference: Wilson, W. E. (2010): Sperrylite from the Tweefontein Farm, Limpopo Province, South Africa. Mineralogical Record. 41, 147-155
Pyrrhotite
Formula: Fe7S8
Reference: Buchanan, D.L., Nolan, J. Suddaby, P., Rouse, J. E., Viljoen, M.J. & Davenport, W.J. (1981): The genesis of sulfide mineralization in a portion of ther Potgietersrus limb of the Bushveld Complex. Economic Geolology. 76:568-579
Ruthenarsenite
Formula: (Ru,Ni)As
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Ruthenium
Formula: (Ru,Ir)
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Rutile
Formula: TiO2
Reference: Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Sperrylite
Formula: PtAs2
Description: Crystals known to 3.5cm see photo ID 729804, the large loose crystal is 3.5cm
Reference: Minerals of South Africa; Am Min 68:11-12 pp 1249-1254; Wilson, W. E. (2010): Sperrylite from the Tweefontein Farm, Limpopo Province, South Africa. Mineralogical Record. 41, 147-155
Stibiopalladinite (TL)
Formula: Pd5Sb2
Type Locality:
Reference: Cabri, L. J. & Chen, T.T. (1976) : Stibiopalladinite from the type locality. American Mineralogist. 61, 1249-1254

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
Isoferroplatinum1.AG.35Pt3Fe
Platinum1.AF.10Pt
Ruthenium1.AF.05(Ru,Ir)
Group 2 - Sulphides and Sulfosalts
Bornite2.BA.15Cu5FeS4
Braggite2.CC.35a(Pt,Pd,Ni)S
Chalcopyrite2.CB.10aCuFeS2
Cooperite2.CC.35bPtS
Laurite2.EB.05aRuS2
Mertieite-II2.AC.10bPd8Sb2.5As0.5
Pentlandite2.BB.15(FexNiy)Σ9S8
Pyrrhotite2.CC.10Fe7S8
Ruthenarsenite2.CC.15(Ru,Ni)As
Sperrylite2.EB.05aPtAs2
Stibiopalladinite (TL)2.AC.20aPd5Sb2
Group 4 - Oxides and Hydroxides
Chromite4.BB.05Fe2+Cr3+2O4
Rutile4.DB.05TiO2
Group 9 - Silicates
Chrysocolla9.ED.20Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Fayalite9.AC.05Fe2+2SiO4
Forsterite9.AC.05Mg2SiO4
Unclassified Minerals, Rocks, etc.
'Chlorite Group'-

List of minerals arranged by Dana 8th Edition classification

Group 1 - NATIVE ELEMENTS AND ALLOYS
Platinum Group Metals and Alloys
Isoferroplatinum1.2.5.1Pt3Fe
Platinum1.2.1.1Pt
Ruthenium1.2.2.2(Ru,Ir)
Group 2 - SULFIDES
AmBnXp, with (m+n):p = 5:2
Stibiopalladinite (TL)2.3.3.1Pd5Sb2
AmBnXp, with (m+n):p = 3:2
Bornite2.5.2.1Cu5FeS4
AmBnXp, with (m+n):p = 9:8
Pentlandite2.7.1.1(FexNiy)Σ9S8
AmXp, with m:p = 1:1
Braggite2.8.5.3(Pt,Pd,Ni)S
Cooperite2.8.5.1PtS
Pyrrhotite2.8.10.1Fe7S8
Ruthenarsenite2.8.17.1(Ru,Ni)As
AmBnXp, with (m+n):p = 1:1
Chalcopyrite2.9.1.1CuFeS2
AmBnXp, with (m+n):p = 1:2
Laurite2.12.1.10RuS2
Sperrylite2.12.1.13PtAs2
Miscellaneous
Mertieite-II2.16.3.1Pd8Sb2.5As0.5
Group 4 - SIMPLE OXIDES
AX2
Rutile4.4.1.1TiO2
Group 7 - MULTIPLE OXIDES
AB2X4
Chromite7.2.3.3Fe2+Cr3+2O4
Group 51 - NESOSILICATES Insular SiO4 Groups Only
Insular SiO4 Groups Only with all cations in octahedral [6] coordination
Fayalite51.3.1.1Fe2+2SiO4
Forsterite51.3.1.2Mg2SiO4
Group 74 - PHYLLOSILICATES Modulated Layers
Modulated Layers with joined strips
Chrysocolla74.3.2.1Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Unclassified Minerals, Mixtures, etc.
'Chlorite Group'-

List of minerals for each chemical element

HHydrogen
H ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
OOxygen
O ForsteriteMg2SiO4
O FayaliteFe22+SiO4
O ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
O RutileTiO2
O ChromiteFe2+Cr23+O4
MgMagnesium
Mg ForsteriteMg2SiO4
AlAluminium
Al ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SiSilicon
Si ForsteriteMg2SiO4
Si FayaliteFe22+SiO4
Si ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
SSulfur
S Braggite(Pt,Pd,Ni)S
S CooperitePtS
S PyrrhotiteFe7S8
S ChalcopyriteCuFeS2
S LauriteRuS2
S Pentlandite(FexNiy)Σ9S8
S BorniteCu5FeS4
TiTitanium
Ti RutileTiO2
CrChromium
Cr ChromiteFe2+Cr23+O4
FeIron
Fe FayaliteFe22+SiO4
Fe PyrrhotiteFe7S8
Fe ChalcopyriteCuFeS2
Fe Pentlandite(FexNiy)Σ9S8
Fe IsoferroplatinumPt3Fe
Fe BorniteCu5FeS4
Fe ChromiteFe2+Cr23+O4
NiNickel
Ni Pentlandite(FexNiy)Σ9S8
Ni Ruthenarsenite(Ru,Ni)As
CuCopper
Cu ChalcopyriteCuFeS2
Cu ChrysocollaCu2-xAlx(H2-xSi2O5)(OH)4 · nH2O
Cu BorniteCu5FeS4
AsArsenic
As SperrylitePtAs2
As Mertieite-IIPd8Sb2.5As0.5
As Ruthenarsenite(Ru,Ni)As
RuRuthenium
Ru LauriteRuS2
Ru Ruthenium(Ru,Ir)
Ru Ruthenarsenite(Ru,Ni)As
PdPalladium
Pd StibiopalladinitePd5Sb2
Pd Mertieite-IIPd8Sb2.5As0.5
SbAntimony
Sb StibiopalladinitePd5Sb2
Sb Mertieite-IIPd8Sb2.5As0.5
PtPlatinum
Pt SperrylitePtAs2
Pt Braggite(Pt,Pd,Ni)S
Pt CooperitePtS
Pt PlatinumPt
Pt IsoferroplatinumPt3Fe

References

Sort by

Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Wagner, P.A. (1929). The platiunum deposits and mines of South Africa. Oliver and Boyd, London, 326 pages.
Cabri, L. J. & Chen, T.T. (1976) : Stibiopalladinite from the type locality. American Mineralogist. 61, 1249-1254
Buchanan, D.L., Nolan, J. Suddaby, P., Rouse, J. E., Viljoen, M.J. & Davenport, W.J. (1981): The genesis of sulfide mineralization in a portion of ther Potgietersrus limb of the Bushveld Complex. Economic Geolology. 76:568-579
Mining Annual Review (1985): 92.
Zaccarini, F., Garuti, G., and Cawthorn, R.G. (2002) Platinum-group minerals in chromitite xenoliths from the Onverwacht and Tweefontein ultramafic pipes, eastern Bushveld Complex. Canadian Mineralogist: 40: 481-497.
Wilson, W. E. (2010): Sperrylite from the Tweefontein Farm, Limpopo Province, South Africa. Mineralogical Record. 41, 147-155


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