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Nkamouna Mine, Lomié Ultramafic complex, Lomié, Haut-Nyong, East Region, Camerooni
Regional Level Types
Nkamouna MineMine
Lomié Ultramafic complexComplex
LomiéCommune
Haut-NyongDepartment
East RegionRegion
CameroonCountry

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Latitude & Longitude (WGS84):
3° 16' 0'' North , 13° 50' 43'' East
Latitude & Longitude (decimal):
3.26667,13.84528
GeoHash:
G#: s29fe49vd
GRN:
N03E10
Type:
Mine
Köppen climate type:
Aw : Tropical savanna, wet
Mindat Locality ID:
210801
Long-form identifier:
mindat:1:2:210801:1
GUID (UUID V4):
0


Laterite-type nickel-cobalt-manganese deposit, developed on serpentinized ultramafic rocks. An open-pit mine is operated by Geovic Mining Corp.
Located about 30km NE of Lomié.
Co-ordinates are approximate.

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Mineral List


24 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Antigorite
Formula: Mg3(Si2O5)(OH)4
ⓘ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Asbolane
Formula: (Ni,Co)2-xMn4+(O,OH)4 · nH2O
ⓘ Beidellite
Formula: (Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
ⓘ Carrollite
Formula: CuCo2S4
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Cubanite
Formula: CuFe2S3
ⓘ Dolomite
Formula: CaMg(CO3)2
ⓘ Ernienickelite
Formula: NiMn3O7 · 3H2O
ⓘ 'Fayalite-Forsterite Series'
ⓘ 'Ferritchromit'
ⓘ 'Garnierite'
ⓘ Gibbsite
Formula: Al(OH)3
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Heazlewoodite
Formula: Ni3S2
ⓘ Kaolinite
Formula: Al2(Si2O5)(OH)4
ⓘ 'Kerolite'
Formula: (Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
ⓘ 'Limonite'
ⓘ Maghemite
Formula: (Fe3+0.67◻0.33)Fe3+2O4
ⓘ Magnesite
Formula: MgCO3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘ Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
ⓘ Pentlandite
Formula: (NixFey)Σ9S8
ⓘ 'Pyroxene Group'
Formula: ADSi2O6
ⓘ Pyrrhotite
Formula: Fe1-xS
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Spinel
Formula: MgAl2O4
ⓘ Talc
Formula: Mg3Si4O10(OH)2

Gallery:

List of minerals arranged by Strunz 10th Edition classification

Group 2 - Sulphides and Sulfosalts
ⓘHeazlewoodite2.BB.05Ni3S2
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘCubanite2.CB.55aCuFe2S3
ⓘPyrrhotite2.CC.10Fe1-xS
ⓘCarrollite2.DA.05CuCo2S4
ⓘArsenopyrite2.EB.20FeAsS
Group 4 - Oxides and Hydroxides
ⓘGoethite4.00.Fe3+O(OH)
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘSpinel4.BB.05MgAl2O4
ⓘMaghemite4.BB.15(Fe3+0.67◻0.33)Fe3+2O4
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘGibbsite4.FE.10Al(OH)3
ⓘErnienickelite4.FL.20NiMn3O7 · 3H2O
ⓘAsbolane4.FL.30(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Group 5 - Nitrates and Carbonates
ⓘMagnesite5.AB.05MgCO3
ⓘDolomite5.AB.10CaMg(CO3)2
Group 9 - Silicates
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘBeidellite9.EC.40(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
ⓘMontmorillonite9.EC.40(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
ⓘNontronite9.EC.40Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
ⓘKaolinite9.ED.05Al2(Si2O5)(OH)4
ⓘAntigorite9.ED.15Mg3(Si2O5)(OH)4
Unclassified
ⓘ'Limonite'-
ⓘ'Kerolite'-(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
ⓘ'Fayalite-Forsterite Series'-
ⓘ'Pyroxene Group'-ADSi2O6
ⓘ'Garnierite'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Apatite'-Ca5(PO4)3(Cl/F/OH)
ⓘ'Ferritchromit'-

List of minerals for each chemical element

HHydrogen
Hⓘ AntigoriteMg3(Si2O5)(OH)4
Hⓘ Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Hⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Hⓘ ErnienickeliteNiMn3O7 · 3H2O
Hⓘ GibbsiteAl(OH)3
Hⓘ GoethiteFe3+O(OH)
Hⓘ KaoliniteAl2(Si2O5)(OH)4
Hⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Hⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CCarbon
Cⓘ DolomiteCaMg(CO3)2
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ AntigoriteMg3(Si2O5)(OH)4
Oⓘ Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Oⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ DolomiteCaMg(CO3)2
Oⓘ ErnienickeliteNiMn3O7 · 3H2O
Oⓘ GibbsiteAl(OH)3
Oⓘ GoethiteFe3+O(OH)
Oⓘ KaoliniteAl2(Si2O5)(OH)4
Oⓘ MagnesiteMgCO3
Oⓘ Maghemite(Fe3+0.67◻0.33)Fe23+O4
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Oⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Oⓘ QuartzSiO2
Oⓘ SpinelMgAl2O4
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Oⓘ Fayalite-Forsterite Series
Oⓘ Pyroxene GroupADSi2O6
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ ApatiteCa5(PO4)3(Cl/F/OH)
FFluorine
Fⓘ ApatiteCa5(PO4)3(Cl/F/OH)
NaSodium
Naⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Naⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Naⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
MgMagnesium
Mgⓘ AntigoriteMg3(Si2O5)(OH)4
Mgⓘ DolomiteCaMg(CO3)2
Mgⓘ MagnesiteMgCO3
Mgⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Mgⓘ SpinelMgAl2O4
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Mgⓘ Fayalite-Forsterite Series
AlAluminium
Alⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Alⓘ GibbsiteAl(OH)3
Alⓘ KaoliniteAl2(Si2O5)(OH)4
Alⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Alⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Alⓘ SpinelMgAl2O4
SiSilicon
Siⓘ AntigoriteMg3(Si2O5)(OH)4
Siⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ KaoliniteAl2(Si2O5)(OH)4
Siⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Siⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Siⓘ QuartzSiO2
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
Siⓘ Fayalite-Forsterite Series
Siⓘ Pyroxene GroupADSi2O6
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
PPhosphorus
Pⓘ ApatiteCa5(PO4)3(Cl/F/OH)
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ CarrolliteCuCo2S4
Sⓘ ChalcopyriteCuFeS2
Sⓘ CubaniteCuFe2S3
Sⓘ HeazlewooditeNi3S2
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ PyrrhotiteFe1-xS
ClChlorine
Clⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CaCalcium
Caⓘ Beidellite(Na,Ca0.5)0.3Al2((Si,Al)4O10)(OH)2 · nH2O
Caⓘ DolomiteCaMg(CO3)2
Caⓘ Montmorillonite(Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
Caⓘ ApatiteCa5(PO4)3(Cl/F/OH)
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
MnManganese
Mnⓘ Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Mnⓘ ErnienickeliteNiMn3O7 · 3H2O
FeIron
Feⓘ ArsenopyriteFeAsS
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ CubaniteCuFe2S3
Feⓘ GoethiteFe3+O(OH)
Feⓘ Maghemite(Fe3+0.67◻0.33)Fe23+O4
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ NontroniteNa0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyrrhotiteFe1-xS
Feⓘ Fayalite-Forsterite Series
CoCobalt
Coⓘ Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Coⓘ CarrolliteCuCo2S4
NiNickel
Niⓘ Asbolane(Ni,Co)2-xMn4+(O,OH)4 · nH2O
Niⓘ ErnienickeliteNiMn3O7 · 3H2O
Niⓘ HeazlewooditeNi3S2
Niⓘ Pentlandite(NixFey)Σ9S8
Niⓘ Kerolite(Mg,Ni)3Si4O10(OH)2 · nH2O (n ~ 1)
CuCopper
Cuⓘ CarrolliteCuCo2S4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CubaniteCuFe2S3
AsArsenic
Asⓘ ArsenopyriteFeAsS

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

Lambert, R.J., Noble, A.C. (2008) Nkamouna Cobalt Project Feasibility Study. Pincock, Allen & Holt NI 43-101 Technical Report for Geovic Mining Corp. - for mineralogy see: http://www.geovic.net/userfiles/file/tech_reports/2006/9.0%20Mineralization.pdf
Yongue-Fouateu, R., Yemefack, M., Wouatong, A.S.L., Ndjigui, P.D., Bilong, P. (2009) Contrasted mineralogical composition of the laterite cover on serpentinites of Nkamouna-Kongo, southeast Cameroon. Clay Minerals 44(2), 221-237. DOI: 10.1180/claymin.2009.044.2.221
Dzemua, G. L., & Gleeson, S. A. (2012). Petrography, Mineralogy, and Geochemistry of the Nkamouna Serpentinite: Implications for the Formation of the Cobalt-Manganese Laterite Deposit, Southeast Cameroon. Economic Geology, 107(1), 25-41.
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