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Avontuur deposit, Joe Morolong Local Municipality, John Taolo Gaetsewe District Municipality, Northern Cape, South Africai
Regional Level Types
Avontuur depositDeposit
Joe Morolong Local MunicipalityMunicipality
John Taolo Gaetsewe District MunicipalityDistrict Municipality
Northern CapeProvince
South AfricaCountry

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Latitude & Longitude (WGS84):
27° 1' 12'' South , 22° 52' 49'' East
Latitude & Longitude (decimal):
-27.02008,22.88046
GRN:
S19E15
Type:
Deposit
Köppen climate type:
BSh : Hot semi-arid (steppe) climate
Mindat Locality ID:
194746
Long-form identifier:
mindat:1:2:194746:8
GUID (UUID V4):
0


Uneconomic grade Mn deposit.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded at this locality.


Mineral List


9 valid minerals.

Detailed Mineral List:

ⓘ Calcite
Formula: CaCO3
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Friedelite
Formula: Mn2+8Si6O15(OH,Cl)10
ⓘ Gageite
Formula: Mn21(Si4O12)2O3(OH)20
ⓘ Hausmannite
Formula: Mn2+Mn3+2O4
ⓘ Jacobsite
Formula: Mn2+Fe3+2O4
ⓘ Kutnohorite
Formula: CaMn2+(CO3)2
ⓘ Rhodochrosite
Formula: MnCO3
ⓘ Tephroite
Formula: Mn2+2(SiO4)

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
ⓘJacobsite4.BB.05Mn2+Fe3+2O4
ⓘHausmannite4.BB.10Mn2+Mn3+2O4
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘRhodochrosite5.AB.05MnCO3
ⓘDolomite5.AB.10CaMg(CO3)2
ⓘKutnohorite5.AB.10CaMn2+(CO3)2
Group 9 - Silicates
ⓘTephroite9.AC.05Mn2+2(SiO4)
ⓘGageite9.DH.35Mn21(Si4O12)2O3(OH)20
ⓘFriedelite9.EE.10Mn2+8Si6O15(OH,Cl)10

List of minerals for each chemical element

HHydrogen
Hⓘ FriedeliteMn82+Si6O15(OH,Cl)10
Hⓘ GageiteMn21(Si4O12)2O3(OH)20
CCarbon
Cⓘ CalciteCaCO3
Cⓘ DolomiteCaMg(CO3)2
Cⓘ KutnohoriteCaMn2+(CO3)2
Cⓘ RhodochrositeMnCO3
OOxygen
Oⓘ CalciteCaCO3
Oⓘ DolomiteCaMg(CO3)2
Oⓘ FriedeliteMn82+Si6O15(OH,Cl)10
Oⓘ GageiteMn21(Si4O12)2O3(OH)20
Oⓘ HausmanniteMn2+Mn23+O4
Oⓘ JacobsiteMn2+Fe23+O4
Oⓘ KutnohoriteCaMn2+(CO3)2
Oⓘ RhodochrositeMnCO3
Oⓘ TephroiteMn22+(SiO4)
MgMagnesium
Mgⓘ DolomiteCaMg(CO3)2
SiSilicon
Siⓘ FriedeliteMn82+Si6O15(OH,Cl)10
Siⓘ GageiteMn21(Si4O12)2O3(OH)20
Siⓘ TephroiteMn22+(SiO4)
ClChlorine
Clⓘ FriedeliteMn82+Si6O15(OH,Cl)10
CaCalcium
Caⓘ CalciteCaCO3
Caⓘ DolomiteCaMg(CO3)2
Caⓘ KutnohoriteCaMn2+(CO3)2
MnManganese
Mnⓘ FriedeliteMn82+Si6O15(OH,Cl)10
Mnⓘ GageiteMn21(Si4O12)2O3(OH)20
Mnⓘ HausmanniteMn2+Mn23+O4
Mnⓘ JacobsiteMn2+Fe23+O4
Mnⓘ KutnohoriteCaMn2+(CO3)2
Mnⓘ RhodochrositeMnCO3
Mnⓘ TephroiteMn22+(SiO4)
FeIron
Feⓘ JacobsiteMn2+Fe23+O4

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

Miyano, Takashi, Beukes, Nicolas J. (1987) Physicochemical environments for the formation of quartz-free manganese oxide ores from the early Proterozoic Hotazel Formation, Kalahari manganese field, South Africa. Economic Geology, 82 (3) 706-718 doi:10.2113/gsecongeo.82.3.706
Cairncross, Bruce, Beukes, Nicolas J. (2013) The Kalahari Manganese Field: The Adventure Continues. Struik Nature.
Coetzee, L.L., Gutzmer, J., Smith, A.J.B., Beukes, N.J. (2024) Mineralogy and mineral paragenesis of the Palaeoproterozoic manganese ores of the Avontuur deposit of the Kalahari Manganese Field, South Africa. South African Journal of Geology, 127 (1) 31-54 doi:10.25131/sajg.127.0016
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