Vote for your favorite mineral in #MinCup26! - Quartz vs. Asagiite
It's a classic vs a newbie as the most common named mineral in the crust Quartz is up against an exceedingly-rare sea foam-green mineral discovered just a few years ago Asagiite.
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Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africai
Regional Level Types
Kolomela MineMine
PostmasburgTown
Tsantsabane Local MunicipalityMunicipality
ZF Mgcawu District MunicipalityDistrict Municipality
Northern CapeProvince
South AfricaCountry

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01577100017272313357089.jpg
siderite-bearing concretion

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
05225260017271929229118.jpg
Siderite

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
08142100017272313354601.jpg
Siderite

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
01577100017272313357089.jpg
siderite-bearing concretion

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
05225260017271929229118.jpg
Siderite

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
08142100017272313354601.jpg
Siderite

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
01577100017272313357089.jpg
siderite-bearing concretion

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
05225260017271929229118.jpg
Siderite

Kolomela Mine, Postmasburg, Tsantsabane Local Municipality, ZF Mgcawu District Municipality, Northern Cape, South Africa
Latitude & Longitude (WGS84):
28° 23' 6'' South , 22° 59' 7'' East
Latitude & Longitude (decimal):
-28.38500,22.98528
GRN:
S19E15
Type:
Mine
Köppen climate type:
BSh : Hot semi-arid (steppe) climate
Nearest Settlements:
PlacePopulationDistance
Postmasburg30,089 (2018)9.7km
Owned/operated by:
Kumba Iron Ore (63.4%) - a public limited company owned by Anglo American plc
Mindat Locality ID:
233182
Long-form identifier:
mindat:1:2:233182:2
GUID (UUID V4):
0


Iron mine (high-grade hematite ore). Preliminary blasting work started in 2009 and the mine is scheduled to reach full production in 2013, in three pits.

Owned by the 'Kumba Iron Ore' company.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


20 valid minerals. 1 erroneous literature entry.

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ Baryte
Formula: BaSO4
ⓘ Barytocalcite
Formula: BaCa(CO3)2
ⓘ Braunite
Formula: Mn2+Mn3+6(SiO4)O8
ⓘ Calcite
Formula: CaCO3
ⓘ Hausmannite
Formula: Mn2+Mn3+2O4
ⓘ Hematite
Formula: Fe2O3
ⓘ 'K Feldspar'
ⓘ Natrolite
Formula: Na2Al2Si3O10 · 2H2O
ⓘ Noelbensonite
Formula: BaMn3+2(Si2O7)(OH)2 · H2O
ⓘ Paragonite
Formula: NaAl2(AlSi3O10)(OH)2
ⓘ Pectolite
Formula: NaCa2Si3O8(OH)
ⓘ Piemontite
Formula: (CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
ⓘ Pyrite
Formula: FeS2
References:
Cairncross, Bruce (2023) Personal Communication. Identified by Bruce Cairncross: Visual Identification
ⓘ Quartz
Formula: SiO2
ⓘ 'Randite'
Description: The reference in question, "Tokyoite, As-Rich Tokyoite, and Noélbensonite: New Occurrences From the Postmasburg Manganese Field, Northern Cape Province, South Africa" describes serandite from the locality, not randite.
ⓘ Serandite
Formula: NaMn2+2Si3O8(OH)
ⓘ Siderite
Formula: FeCO3
ⓘ Strontianite
Formula: SrCO3
ⓘ Tokyoite
Formula: Ba2Mn3+(VO4)2(OH)
ⓘ Witherite
Formula: BaCO3

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘPyrite2.EB.05aFeS2
Group 4 - Oxides and Hydroxides
ⓘHausmannite4.BB.10Mn2+Mn3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘQuartz4.DA.05SiO2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘSiderite5.AB.05FeCO3
ⓘStrontianite5.AB.15SrCO3
ⓘWitherite5.AB.15BaCO3
ⓘBarytocalcite5.AB.45BaCa(CO3)2
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
Group 8 - Phosphates, Arsenates and Vanadates
ⓘTokyoite8.BG.05Ba2Mn3+(VO4)2(OH)
Group 9 - Silicates
ⓘBraunite9.AG.05Mn2+Mn3+6(SiO4)O8
ⓘNoelbensonite9.BE.05BaMn3+2(Si2O7)(OH)2 · H2O
ⓘPiemontite9.BG.05a(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘPectolite9.DG.05NaCa2Si3O8(OH)
ⓘSerandite9.DG.05NaMn2+2Si3O8(OH)
ⓘParagonite9.EC.15NaAl2(AlSi3O10)(OH)2
ⓘAlbite9.FA.35Na(AlSi3O8)
ⓘNatrolite9.GA.05Na2Al2Si3O10 · 2H2O
Unclassified
ⓘ'K Feldspar'-
ⓘ'Randite' ?-

List of minerals for each chemical element

HHydrogen
Hⓘ NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
Hⓘ NatroliteNa2Al2Si3O10 · 2H2O
Hⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
Hⓘ PectoliteNaCa2Si3O8(OH)
Hⓘ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Hⓘ SeranditeNaMn22+Si3O8(OH)
Hⓘ TokyoiteBa2Mn3+(VO4)2(OH)
CCarbon
Cⓘ BarytocalciteBaCa(CO3)2
Cⓘ CalciteCaCO3
Cⓘ SideriteFeCO3
Cⓘ StrontianiteSrCO3
Cⓘ WitheriteBaCO3
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ BarytocalciteBaCa(CO3)2
Oⓘ BaryteBaSO4
Oⓘ BrauniteMn2+Mn63+(SiO4)O8
Oⓘ CalciteCaCO3
Oⓘ HausmanniteMn2+Mn23+O4
Oⓘ HematiteFe2O3
Oⓘ NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
Oⓘ NatroliteNa2Al2Si3O10 · 2H2O
Oⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
Oⓘ PectoliteNaCa2Si3O8(OH)
Oⓘ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Oⓘ QuartzSiO2
Oⓘ SeranditeNaMn22+Si3O8(OH)
Oⓘ SideriteFeCO3
Oⓘ StrontianiteSrCO3
Oⓘ WitheriteBaCO3
Oⓘ TokyoiteBa2Mn3+(VO4)2(OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ NatroliteNa2Al2Si3O10 · 2H2O
Naⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
Naⓘ PectoliteNaCa2Si3O8(OH)
Naⓘ SeranditeNaMn22+Si3O8(OH)
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ NatroliteNa2Al2Si3O10 · 2H2O
Alⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
Alⓘ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ BrauniteMn2+Mn63+(SiO4)O8
Siⓘ NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
Siⓘ NatroliteNa2Al2Si3O10 · 2H2O
Siⓘ ParagoniteNaAl2(AlSi3O10)(OH)2
Siⓘ PectoliteNaCa2Si3O8(OH)
Siⓘ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Siⓘ QuartzSiO2
Siⓘ SeranditeNaMn22+Si3O8(OH)
SSulfur
Sⓘ BaryteBaSO4
Sⓘ PyriteFeS2
CaCalcium
Caⓘ BarytocalciteBaCa(CO3)2
Caⓘ CalciteCaCO3
Caⓘ PectoliteNaCa2Si3O8(OH)
Caⓘ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
VVanadium
Vⓘ TokyoiteBa2Mn3+(VO4)2(OH)
MnManganese
Mnⓘ BrauniteMn2+Mn63+(SiO4)O8
Mnⓘ HausmanniteMn2+Mn23+O4
Mnⓘ NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
Mnⓘ Piemontite(CaCa)(AlAlMn3+)O[Si2O7][SiO4](OH)
Mnⓘ SeranditeNaMn22+Si3O8(OH)
Mnⓘ TokyoiteBa2Mn3+(VO4)2(OH)
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ HematiteFe2O3
Feⓘ PyriteFeS2
Feⓘ SideriteFeCO3
SrStrontium
Srⓘ StrontianiteSrCO3
BaBarium
Baⓘ BarytocalciteBaCa(CO3)2
Baⓘ BaryteBaSO4
Baⓘ NoelbensoniteBaMn23+(Si2O7)(OH)2 · H2O
Baⓘ WitheriteBaCO3
Baⓘ TokyoiteBa2Mn3+(VO4)2(OH)

Other Regions, Features and Areas containing this locality

AfricaContinent
African PlateTectonic Plate

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

www.angloamericankumba.com (2010) http://www.angloamericankumba.com/ob_kolomela.php
www.kumba.co.za (2011) http://www.kumba.co.za/ob_kolomela.php
overendstudio.co.za (2011) http://overendstudio.co.za/online_reports/kumba_ar10/board/bod_or_res_res.php
Costin, Gelu, Fairey, Brenton, Tsikos, Harilaos, Gucsik, Arnold (2015) Tokyoite, As-Rich Tokyoite, and Noélbensonite: New Occurrences From the Postmasburg Manganese Field, Northern Cape Province, South Africa. The Canadian Mineralogist, 53 (6) 981-990 doi:10.3749/canmin.1500063
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