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Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africai
Regional Level Types
Black RockTown
Joe Morolong Local MunicipalityMunicipality
John Taolo Gaetsewe District MunicipalityDistrict Municipality
Northern CapeProvince
South AfricaCountry

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PhotosMapsSearch
09300260017272008036434.jpg
Black Rock mine

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
01892980017272008082077.jpg
Black Rock mine

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
02805150017272008133728.jpg
Black Rock mine old workings

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
09300260017272008036434.jpg
Black Rock mine

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
01892980017272008082077.jpg
Black Rock mine

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
02805150017272008133728.jpg
Black Rock mine old workings

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
09300260017272008036434.jpg
Black Rock mine

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
01892980017272008082077.jpg
Black Rock mine

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
Latitude & Longitude (WGS84):
27° 7' 4'' South , 22° 49' 47'' East
Latitude & Longitude (decimal):
-27.11778,22.83000
GeoHash:
G#: ke0jxx273
GRN:
S19E15
Type:
Town
Köppen climate type:
BSh : Hot semi-arid (steppe) climate
Mindat Locality ID:
247172
Long-form identifier:
mindat:1:2:247172:6
GUID (UUID V4):
0


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

25 valid minerals. 1 (TL) - type locality of valid minerals. 1 (FRL) - first recorded locality of unapproved mineral/variety/etc. 1 erroneous literature entry.

Detailed Mineral List:

ⓘ Aegirine
Formula: NaFe3+Si2O6
Description: Common in the Wessels-type ore
ⓘ Andradite
Formula: Ca3Fe3+2(SiO4)3
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
Habit: massive
Description: micromount specimens
ⓘ Banalsite
Formula: Na2BaAl4Si4O16
Habit: massive
Description: micromount specimens
ⓘ Baryte
Formula: BaSO4
ⓘ Bixbyite-(Mn)
Formula: Mn3+2O3
ⓘ Braunite
Formula: Mn2+Mn3+6(SiO4)O8
ⓘ 'Braunite-II' (FRL)
Formula: Ca(Mn3+,Fe)14(SiO4)O20
Type Locality:
ⓘ Calcite
Formula: CaCO3
Description: Crystals very common up to cabinet size (SAMS datasheet ML 02).
ⓘ Celestine
Formula: SrSO4
References:
Jordi Fabre photo
ⓘ Cryptomelane
Formula: K(Mn4+7Mn3+)O16
ⓘ Cymrite
Formula: BaAl2Si2(O,OH)8 · H2O
ⓘ Ettringite ?
Formula: Ca6Al2(SO4)3(OH)12 · 26H2O
ⓘ Gaudefroyite
Formula: Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
Description: Erroneously reported by dealer to come from this mine, gaudefroyite has not been recorded here, datasheets and references from von Bezing and Cairncross et al and personal communitcations cross-checked by Debbie Woolf.
ⓘ Gypsum
Formula: CaSO4 · 2H2O
ⓘ Hausmannite
Formula: Mn2+Mn3+2O4
ⓘ Hematite
Formula: Fe2O3
ⓘ Inesite
Formula: Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
References:
Rock Currier photo
ⓘ Lithiophorite
Formula: (Al,Li)MnO2(OH)2
ⓘ Manganite
Formula: Mn3+O(OH)
References:
Cors de Brun photo
ⓘ Marokite
Formula: CaMn3+2O4
ⓘ Opal
Formula: SiO2 · nH2O
References:
Am Min 53:495
ⓘ Portlandite
Formula: Ca(OH)2
ⓘ Pyrolusite
Formula: Mn4+O2
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Rhodochrosite
Formula: MnCO3
ⓘ Sturmanite ? (TL)
Formula: Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O
Type Locality:
Description: Although this locality is the type locality for the mineral, it is believed that the actual type locality is the Wessels mine due to an error in labeling the type specimen. No subsequent specimens containing sturmanite or other minerals on the type specimen have been found since, similar material from Wessels was found from 5 pockets in the years 1978-1982.
ⓘ Xonotlite
Formula: Ca6(Si6O17)(OH)2

Gallery:

Mn2+Mn3+2O4ⓘ Hausmannite
trans.png
Hausmannite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Hausmannite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Hausmannite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
MnCO3ⓘ Rhodochrosite
trans.png
Rhodochrosite, etc.

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Rhodochrosite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Rhodochrosite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Rhodochrosite, etc.

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Rhodochrosite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Rhodochrosite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Rhodochrosite, etc.

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa
trans.png
Rhodochrosite

Black Rock Mine, Black Rock, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africa

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘHausmannite4.BB.10Mn2+Mn3+2O4
ⓘMarokite4.BC.05CaMn3+2O4
ⓘHematite4.CB.05Fe2O3
ⓘBixbyite-(Mn)4.CB.10Mn3+2O3
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘOpal4.DA.10SiO2 · nH2O
ⓘPyrolusite4.DB.05Mn4+O2
ⓘCryptomelane4.DK.05aK(Mn4+7Mn3+)O16
ⓘManganite4.FD.15Mn3+O(OH)
ⓘPortlandite4.FE.05Ca(OH)2
ⓘLithiophorite4.FE.25(Al,Li)MnO2(OH)2
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘRhodochrosite5.AB.05MnCO3
Group 6 - Borates
ⓘGaudefroyite ?6.AB.60Ca4Mn3+2-3(BO3)3(CO3)(O,OH)3
Group 7 - Sulphates, Chromates, Molybdates and Tungstates
ⓘBaryte7.AD.35BaSO4
ⓘCelestine7.AD.35SrSO4
ⓘGypsum7.CD.40CaSO4 · 2H2O
ⓘEttringite ?7.DG.15Ca6Al2(SO4)3(OH)12 · 26H2O
ⓘSturmanite ? (TL)7.DG.15Ca6Fe3+2(SO4)2.5[B(OH)4](OH)12 · 25H2O
Group 9 - Silicates
ⓘAndradite9.AD.25Ca3Fe3+2(SiO4)3
ⓘBraunite9.AG.05Mn2+Mn3+6(SiO4)O8
ⓘ'Braunite-II' (TL)9.AG.05Ca(Mn3+,Fe)14(SiO4)O20
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘXonotlite9.DG.35Ca6(Si6O17)(OH)2
ⓘInesite9.DL.05Ca2(Mn,Fe)7Si10O28(OH)2 · 5H2O
ⓘCymrite9.EG.05BaAl2Si2(O,OH)8 · H2O
ⓘBanalsite9.FA.60Na2BaAl4Si4O16
Unclassified
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)

List of minerals for each chemical element

HHydrogen
Hⓘ CymriteBaAl2Si2(O,OH)8 · H2O
Hⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Hⓘ GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3
Hⓘ GypsumCaSO4 · 2H2O
Hⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Hⓘ Lithiophorite(Al,Li)MnO2(OH)2
Hⓘ ManganiteMn3+O(OH)
Hⓘ OpalSiO2 · nH2O
Hⓘ PortlanditeCa(OH)2
Hⓘ SturmaniteCa6Fe23+(SO4)2.5[B(OH)4](OH)12 · 25H2O
Hⓘ XonotliteCa6(Si6O17)(OH)2
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
LiLithium
Liⓘ Lithiophorite(Al,Li)MnO2(OH)2
BBoron
Bⓘ GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3
Bⓘ SturmaniteCa6Fe23+(SO4)2.5[B(OH)4](OH)12 · 25H2O
CCarbon
Cⓘ CalciteCaCO3
Cⓘ GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3
Cⓘ RhodochrositeMnCO3
OOxygen
Oⓘ AegirineNaFe3+Si2O6
Oⓘ AndraditeCa3Fe23+(SiO4)3
Oⓘ BanalsiteNa2BaAl4Si4O16
Oⓘ BaryteBaSO4
Oⓘ Bixbyite-(Mn)Mn23+O3
Oⓘ BrauniteMn2+Mn63+(SiO4)O8
Oⓘ CalciteCaCO3
Oⓘ CelestineSrSO4
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ CryptomelaneK(Mn74+Mn3+)O16
Oⓘ CymriteBaAl2Si2(O,OH)8 · H2O
Oⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Oⓘ GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3
Oⓘ GypsumCaSO4 · 2H2O
Oⓘ HausmanniteMn2+Mn23+O4
Oⓘ HematiteFe2O3
Oⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Oⓘ Lithiophorite(Al,Li)MnO2(OH)2
Oⓘ ManganiteMn3+O(OH)
Oⓘ MarokiteCaMn23+O4
Oⓘ OpalSiO2 · nH2O
Oⓘ PortlanditeCa(OH)2
Oⓘ PyrolusiteMn4+O2
Oⓘ QuartzSiO2
Oⓘ RhodochrositeMnCO3
Oⓘ SturmaniteCa6Fe23+(SO4)2.5[B(OH)4](OH)12 · 25H2O
Oⓘ XonotliteCa6(Si6O17)(OH)2
Oⓘ Braunite-IICa(Mn3+,Fe)14(SiO4)O20
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ BanalsiteNa2BaAl4Si4O16
AlAluminium
Alⓘ BanalsiteNa2BaAl4Si4O16
Alⓘ CymriteBaAl2Si2(O,OH)8 · H2O
Alⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Alⓘ Lithiophorite(Al,Li)MnO2(OH)2
SiSilicon
Siⓘ AegirineNaFe3+Si2O6
Siⓘ AndraditeCa3Fe23+(SiO4)3
Siⓘ BanalsiteNa2BaAl4Si4O16
Siⓘ BrauniteMn2+Mn63+(SiO4)O8
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ CymriteBaAl2Si2(O,OH)8 · H2O
Siⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Siⓘ OpalSiO2 · nH2O
Siⓘ QuartzSiO2
Siⓘ XonotliteCa6(Si6O17)(OH)2
Siⓘ Braunite-IICa(Mn3+,Fe)14(SiO4)O20
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ BaryteBaSO4
Sⓘ CelestineSrSO4
Sⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Sⓘ GypsumCaSO4 · 2H2O
Sⓘ SturmaniteCa6Fe23+(SO4)2.5[B(OH)4](OH)12 · 25H2O
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
KPotassium
Kⓘ CryptomelaneK(Mn74+Mn3+)O16
CaCalcium
Caⓘ AndraditeCa3Fe23+(SiO4)3
Caⓘ CalciteCaCO3
Caⓘ EttringiteCa6Al2(SO4)3(OH)12 · 26H2O
Caⓘ GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3
Caⓘ GypsumCaSO4 · 2H2O
Caⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Caⓘ MarokiteCaMn23+O4
Caⓘ PortlanditeCa(OH)2
Caⓘ SturmaniteCa6Fe23+(SO4)2.5[B(OH)4](OH)12 · 25H2O
Caⓘ XonotliteCa6(Si6O17)(OH)2
Caⓘ Braunite-IICa(Mn3+,Fe)14(SiO4)O20
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
MnManganese
Mnⓘ Bixbyite-(Mn)Mn23+O3
Mnⓘ BrauniteMn2+Mn63+(SiO4)O8
Mnⓘ CryptomelaneK(Mn74+Mn3+)O16
Mnⓘ GaudefroyiteCa4Mn3+2-3(BO3)3(CO3)(O,OH)3
Mnⓘ HausmanniteMn2+Mn23+O4
Mnⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Mnⓘ Lithiophorite(Al,Li)MnO2(OH)2
Mnⓘ ManganiteMn3+O(OH)
Mnⓘ MarokiteCaMn23+O4
Mnⓘ PyrolusiteMn4+O2
Mnⓘ RhodochrositeMnCO3
Mnⓘ Braunite-IICa(Mn3+,Fe)14(SiO4)O20
FeIron
Feⓘ AegirineNaFe3+Si2O6
Feⓘ AndraditeCa3Fe23+(SiO4)3
Feⓘ HematiteFe2O3
Feⓘ InesiteCa2(Mn,Fe)7Si10O28(OH)2 · 5H2O
Feⓘ SturmaniteCa6Fe23+(SO4)2.5[B(OH)4](OH)12 · 25H2O
Feⓘ Braunite-IICa(Mn3+,Fe)14(SiO4)O20
SrStrontium
Srⓘ CelestineSrSO4
BaBarium
Baⓘ BanalsiteNa2BaAl4Si4O16
Baⓘ BaryteBaSO4
Baⓘ CymriteBaAl2Si2(O,OH)8 · H2O

Localities in this Region

South Africa
  • Northern Cape
    • John Taolo Gaetsewe District Municipality

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

Boardman, L.G. (1941). The Black Rock manganese deposit in the South-Eastern Kalahari.Transactions of the Geological Society of South Africa, 44, 51–62.
Cairncross, Bruce, Beukes, Nicolas J. (2013) The Kalahari Manganese Field: The Adventure Continues. Struik Nature.
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