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West Welega Zone, Oromia Region, Ethiopiai
Regional Level Types
West Welega ZoneZone
Oromia RegionRegion
EthiopiaCountry

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PhotosMapsSearchMineralogy
08072080017272050963437.jpg
Alfe river - the left tributary of Bir-Bir river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
02209800017272050973238.jpg
Washing of PGE-gold sands on Alfe river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
08156210017272050973483.jpg
Bir-Bir river valley.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
08072080017272050963437.jpg
Alfe river - the left tributary of Bir-Bir river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
02209800017272050973238.jpg
Washing of PGE-gold sands on Alfe river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
08156210017272050973483.jpg
Bir-Bir river valley.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
08072080017272050963437.jpg
Alfe river - the left tributary of Bir-Bir river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
02209800017272050973238.jpg
Washing of PGE-gold sands on Alfe river.

Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia
Neighbouring regions:
Asosa Zone, Benishangul-Gumuz Region, Ethiopia
Kamashi Zone, Benishangul-Gumuz Region, Ethiopia
Tongo SW Zone, Benishangul-Gumuz Region, Ethiopia
Illubabor Zone, Oromia Region, Ethiopia
Type:
Zone
Largest Settlements:
PlacePopulation
Gimbi31,809 (2013)
Dembī Dolo26,748 (2017)
Mendī25,239 (2017)
Nejo20,166 (2012)
Mindat Locality ID:
290931
Long-form identifier:
mindat:1:2:290931:1
GUID (UUID V4):
0
Other/historical names associated with this locality:
ኦሮምያ?
Other Languages:
View 6 more...
French:
Mirab Welega, Oromia, Éthiopie
Oromo:
Wallagga Dhihaa, Oromiyaa
Simplified Chinese:
西沃萊加地區, 奧羅米亞州, 埃塞俄比亚
Cebuano:
West Wellega Zone, Oromiya Region, Etiopia
Japanese:
西ウェレガ県, オロミア州, エチオピア
Polish:
Strefa Zachodnia Welega, Oromia, Etiopia
Swedish:
West Wellega Zone, Oromia, Etiopien
Traditional Chinese:
西沃萊加地區, 奧羅米亞州, 埃塞俄比亞
Zulu:
West Welega Zone, I-Ithiopia


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Standard Detailed Gallery Strunz Chemical Elements

Mineral List

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

60 valid minerals. 2 (TL) - type locality of valid minerals.

Rock Types Recorded


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

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

ⓘ Actinolite
Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘ Aegirine
Formula: NaFe3+Si2O6
ⓘ Aenigmatite
Formula: Na4[Fe2+10Ti2]O4[Si12O36]
ⓘ Albite
Formula: Na(AlSi3O8)
ⓘ 'Amphibole Supergroup'
Formula: AB2C5(T8O22)W2
ⓘ Andrieslombaardite (TL)
Formula: RhSbS
Type Locality:
ⓘ Anthophyllite
Formula: ◻Mg2Mg5(Si8O22)(OH)2
ⓘ Antigorite
Formula: Mg3(Si2O5)(OH)4
ⓘ 'Apatite'
Formula: Ca5(PO4)3A
ⓘ Arsenopyrite
Formula: FeAsS
ⓘ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ Augite var. Ferroaugite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ Bornite
Formula: Cu5FeS4
ⓘ Bowieite
Formula: Rh2S3
ⓘ Calcite
Formula: CaCO3
ⓘ 'Calcium Amphibole Subgroup'
Formula: AnCa2(C2+5-mC3+m)(Si8-(n+m)Al(n+m))W2
ⓘ 'Calcium Amphibole Subgroup var. Hornblende'
Formula: AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
ⓘ 'Carbonate'
ⓘ Chalcopyrite
Formula: CuFeS2
ⓘ 'Chlorite Group'
ⓘ Chromite
Formula: Fe2+Cr3+2O4
ⓘ Chrysotile
Formula: Mg3(Si2O5)(OH)4
ⓘ Cubanite
Formula: CuFe2S3
ⓘ Cummingtonite
Formula: ◻Mg2Mg5(Si8O22)(OH)2
ⓘ Cuprorhodsite
Formula: (Cu+0.5Fe3+0.5)Rh3+2S4
ⓘ Diopside
Formula: CaMgSi2O6
ⓘ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘ Erlichmanite
Formula: OsS2
ⓘ 'Feldspar Group'
ⓘ Ferronickelplatinum
Formula: Pt2FeNi
Description: Sponge-like crystalline aggregates up to 0.8 mm with composition (Pt1.72Ir0.22)1.94Fe1.05(Ni0.91Cu0.04)1.01. Iridian variety with about 6 mas.% Ir.
ⓘ Ferrotorryweiserite
Formula: Rh5Fe10S16
ⓘ Forsterite
Formula: Mg2(SiO4)
ⓘ Galena
Formula: PbS
ⓘ Genkinite
Formula: Pt4Sb3
ⓘ Goethite
Formula: Fe3+O(OH)
ⓘ Hematite
Formula: Fe2O3
ⓘ Hollingworthite
Formula: (Rh,Pt,Pd)AsS
ⓘ 'Hollingworthite-Irarsite Series'
Description: Inclusions of distorted octahedrons up to 10 mkm size within polyxene grains. It is interesting, that these minerals differ from usual hollingworthites from the same specimen by constant admixture of tellurium on level ~1 mas.%.
ⓘ 'Hornblende Root Name Group'
Formula: ◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ Ilmenite
Formula: Fe2+TiO3
ⓘ Irarsite
Formula: (Ir,Ru,Rh,Pt)AsS
ⓘ Isoferroplatinum
Formula: Pt3Fe
ⓘ Kashinite
Formula: Ir2S3
ⓘ 'K Feldspar'
ⓘ Kingstonite (TL)
Formula: Rh3S4
Type Locality:
ⓘ Laurite
Formula: RuS2
ⓘ 'Limonite'
ⓘ Lizardite
Formula: Mg3(Si2O5)(OH)4
ⓘ Magnesiochromite
Formula: MgCr2O4
ⓘ Magnesio-hornblende
Formula: ◻Ca2(Mg4Al)(Si7Al)O22(OH)2
ⓘ Magnesite
Formula: MgCO3
ⓘ Magnetite
Formula: Fe2+Fe3+2O4
ⓘ Magnetite var. Chrommagnetite
Formula: Fe2+(Fe3+,Cr3+)2O4
Description: Octahedral crystals up to 1 mm with Cr2O3 contents about 2-3 mas.%.
ⓘ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
ⓘ Native Gold
Formula: Au
ⓘ Native Gold var. Electrum
Formula: (Au,Ag)
ⓘ Native Osmium
Formula: (Os,Ir,Ru)
ⓘ Native Platinum
Formula: Pt
ⓘ Native Platinum var. Polyxene
Formula: (Pt,Fe,Cu,Ni,Pd,Rh)
ⓘ Native Silver
Formula: Ag
ⓘ Nepheline
Formula: Na3K(Al4Si4O16)
ⓘ 'Olivine Group'
Formula: M2SiO4
ⓘ Pentlandite
Formula: (NixFey)Σ9S8
ⓘ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
ⓘ 'Prassoite'
Formula: Rh17S15
ⓘ Pyrite
Formula: FeS2
ⓘ Quartz
Formula: SiO2
ⓘ Quartz var. Chalcedony
Formula: SiO2
ⓘ Riebeckite
Formula: ◻Na2(Fe2+3Fe3+2)Si8O22(OH)2
ⓘ 'Roseite'
Formula: (Os,Ir)S
ⓘ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
ⓘ Sperrylite
Formula: PtAs2
ⓘ Sperrylite var. Platarsite
Formula: Pt(As,S)2
ⓘ Spessartine
Formula: Mn2+3Al2(SiO4)3
ⓘ Sphalerite
Formula: ZnS
ⓘ Stibiopalladinite
Formula: Pd5Sb2
ⓘ Stumpflite
Formula: PtSb
ⓘ Talc
Formula: Mg3Si4O10(OH)2
ⓘ Tetraferroplatinum
Formula: PtFe
ⓘ 'Tetrahedrite Group'
Formula: M2(A6)M1(B4 C2)X3(D4)S1(Y12)S2(Z)
ⓘ 'Tourmaline'
Formula: AD3G6(T6O18)(BO3)3X3Z
ⓘ Tremolite
Formula: ◻Ca2Mg5(Si8O22)(OH)2
ⓘ Tulameenite
Formula: Pt2CuFe
ⓘ Tulameenite var. Antimony-bearing Tulameenite
Formula: (Pt,Sb)2CuFe
ⓘ 'UM1981-08-E:FeIrPtRhRu'
Formula: Ir-Fe-Pt-Rh-Ru-O-H ?
ⓘ 'UM1981-13-S:CoFeNiRh'
Formula: (Fe,Ni,Rh,Co)9S8
ⓘ 'UM1981-14-S:CuFeIrNiRh'
Formula: (Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
ⓘ 'UM1981-15-S:CuFeIrNiRh'
Formula: (Rh,Fe,Ni,Cu,Ir)S
ⓘ 'UM1981-16-S:CuFeIrNiRh'
Formula: (Fe,Rh,Ni,Cu,Ir)S
ⓘ 'UM1981-17-S:CuIrPtRh'
Formula: Pt(Rh,Ir)CuS4
ⓘ 'UM1981-29-Te:BiRh'
Formula: Rh(Te,Bi)2
ⓘ 'UM1992-24-S:CuFeIrNiPtRh'
Formula: (Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
ⓘ 'UM1992-31-Sb:AsPdRh'
Formula: (Pd,Rh)2(Sb,As)
ⓘ 'Unnamed (Pt-Fe Alloy)'
Formula: Pt2Fe
ⓘ Zircon
Formula: Zr(SiO4)

List of minerals arranged by Strunz 10th Edition classification

Group 1 - Elements
ⓘNative Gold
var. Electrum		1.AA.05(Au,Ag)
ⓘ1.AA.05Au
ⓘNative Silver1.AA.05Ag
ⓘNative Osmium1.AF.05(Os,Ir,Ru)
ⓘNative Platinum1.AF.10Pt
ⓘvar. Polyxene1.AF.10(Pt,Fe,Cu,Ni,Pd,Rh)
ⓘIsoferroplatinum1.AG.35Pt3Fe
ⓘFerronickelplatinum1.AG.40Pt2FeNi
ⓘTetraferroplatinum1.AG.40PtFe
ⓘTulameenite1.AG.40Pt2CuFe
ⓘvar. Antimony-bearing Tulameenite1.AG.40(Pt,Sb)2CuFe
Group 2 - Sulphides and Sulfosalts
ⓘStibiopalladinite2.AC.20aPd5Sb2
ⓘGenkinite2.AC.35aPt4Sb3
ⓘBornite2.BA.15Cu5FeS4
ⓘPentlandite2.BB.15(NixFey)Σ9S8
ⓘSphalerite2.CB.05aZnS
ⓘChalcopyrite2.CB.10aCuFeS2
ⓘCubanite2.CB.55aCuFe2S3
ⓘFerrotorryweiserite2.CC.Rh5Fe10S16
ⓘStumpflite2.CC.05PtSb
ⓘGalena2.CD.10PbS
ⓘCuprorhodsite2.DA.05(Cu+0.5Fe3+0.5)Rh3+2S4
ⓘKingstonite (TL)2.DA.25Rh3S4
ⓘBowieite2.DB.15Rh2S3
ⓘKashinite2.DB.15Ir2S3
ⓘAndrieslombaardite (TL)2.EB.RhSbS
ⓘErlichmanite2.EB.05aOsS2
ⓘLaurite2.EB.05aRuS2
ⓘPyrite2.EB.05aFeS2
ⓘSperrylite2.EB.05aPtAs2
ⓘArsenopyrite2.EB.20FeAsS
ⓘHollingworthite2.EB.25(Rh,Pt,Pd)AsS
ⓘIrarsite2.EB.25(Ir,Ru,Rh,Pt)AsS
ⓘSperrylite
var. Platarsite		2.EB.25Pt(As,S)2
Group 4 - Oxides and Hydroxides
ⓘChromite4.BB.05Fe2+Cr3+2O4
ⓘMagnesiochromite4.BB.05MgCr2O4
ⓘMagnetite4.BB.05Fe2+Fe3+2O4
ⓘvar. Chrommagnetite4.BB.05Fe2+(Fe3+,Cr3+)2O4
ⓘHematite4.CB.05Fe2O3
ⓘIlmenite4.CB.05Fe2+TiO3
ⓘQuartz
var. Chalcedony		4.DA.05SiO2
ⓘ4.DA.05SiO2
ⓘGoethite4.FD.10Fe3+O(OH)
Group 5 - Nitrates and Carbonates
ⓘCalcite5.AB.05CaCO3
ⓘMagnesite5.AB.05MgCO3
Group 9 - Silicates
ⓘChrysotile9.00.Mg3(Si2O5)(OH)4
ⓘForsterite9.AC.05Mg2(SiO4)
ⓘSpessartine9.AD.25Mn2+3Al2(SiO4)3
ⓘZircon9.AD.30Zr(SiO4)
ⓘEpidote9.BG.05a(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
ⓘAugite9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘDiopside9.DA.15CaMgSi2O6
ⓘAugite
var. Ferroaugite		9.DA.15(CaxMgyFez)(Mgy1Fez1)Si2O6
ⓘAegirine9.DA.25NaFe3+Si2O6
ⓘAnthophyllite9.DD.05◻Mg2Mg5(Si8O22)(OH)2
ⓘCummingtonite9.DE.05◻Mg2Mg5(Si8O22)(OH)2
ⓘActinolite9.DE.10◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
ⓘMagnesio-hornblende9.DE.10◻Ca2(Mg4Al)(Si7Al)O22(OH)2
ⓘTremolite9.DE.10◻Ca2Mg5(Si8O22)(OH)2
ⓘRiebeckite9.DE.25◻Na2(Fe2+3Fe3+2)Si8O22(OH)2
ⓘAenigmatite9.DH.40Na4[Fe2+10Ti2]O4[Si12O36]
ⓘTalc9.EC.05Mg3Si4O10(OH)2
ⓘMuscovite9.EC.15KAl2(AlSi3O10)(OH)2
ⓘAntigorite9.ED.15Mg3(Si2O5)(OH)4
ⓘLizardite9.ED.15Mg3(Si2O5)(OH)4
ⓘNepheline9.FA.05Na3K(Al4Si4O16)
ⓘAlbite9.FA.35Na(AlSi3O8)
Unclassified
ⓘ'Amphibole Supergroup'-AB2C5(T8O22)W2
ⓘ'Biotite'-K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
ⓘ'Chlorite Group'-
ⓘ'Feldspar Group'-
ⓘ'Calcium Amphibole Subgroup
var. Hornblende'		-AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
ⓘ'Limonite'-
ⓘ'Tourmaline'-AD3G6(T6O18)(BO3)3X3Z
ⓘ'Unnamed (Pt-Fe Alloy)'-Pt2Fe
ⓘ'Hornblende Root Name Group'-◻Ca2(C2+4C3+)(AlSi7O22)W2
ⓘ'Hollingworthite-Irarsite Series'-
ⓘ'Plagioclase'-(Na,Ca)[(Si,Al)AlSi2]O8
ⓘ'K Feldspar'-
ⓘ'Serpentine Subgroup'-D3[Si2O5](OH)4
ⓘ'Prassoite'-Rh17S15
ⓘ'Apatite'-Ca5(PO4)3A
ⓘ'Olivine Group'-M2SiO4
ⓘ'Tetrahedrite Group'-M2(A6)M1(B4 C2)X3(D4)S1(Y12)S2(Z)
ⓘ'Calcium Amphibole Subgroup'-AnCa2(C2+5-mC3+m)(Si8-(n+m)Al(n+m))W2
ⓘ'UM1981-08-E:FeIrPtRhRu'-Ir-Fe-Pt-Rh-Ru-O-H ?
ⓘ'UM1981-29-Te:BiRh'-Rh(Te,Bi)2
ⓘ'UM1981-13-S:CoFeNiRh'-(Fe,Ni,Rh,Co)9S8
ⓘ'UM1981-14-S:CuFeIrNiRh'-(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
ⓘ'UM1981-15-S:CuFeIrNiRh'-(Rh,Fe,Ni,Cu,Ir)S
ⓘ'UM1981-16-S:CuFeIrNiRh'-(Fe,Rh,Ni,Cu,Ir)S
ⓘ'UM1981-17-S:CuIrPtRh'-Pt(Rh,Ir)CuS4
ⓘ'Carbonate'-
ⓘ'UM1992-24-S:CuFeIrNiPtRh'-(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
ⓘ'UM1992-31-Sb:AsPdRh'-(Pd,Rh)2(Sb,As)
ⓘ'Roseite'-(Os,Ir)S

List of minerals for each chemical element

HHydrogen
Hⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Hⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Hⓘ AntigoriteMg3(Si2O5)(OH)4
Hⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Hⓘ ChrysotileMg3(Si2O5)(OH)4
Hⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Hⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Hⓘ GoethiteFe3+O(OH)
Hⓘ Calcium Amphibole Subgroup var. HornblendeAnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Hⓘ LizarditeMg3(Si2O5)(OH)4
Hⓘ Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Hⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Hⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Hⓘ TalcMg3Si4O10(OH)2
Hⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Hⓘ Serpentine SubgroupD3[Si2O5](OH)4
Hⓘ UM1981-08-E:FeIrPtRhRuIr-Fe-Pt-Rh-Ru-O-H ?
BBoron
Bⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
CCarbon
Cⓘ CalciteCaCO3
Cⓘ MagnesiteMgCO3
OOxygen
Oⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Oⓘ AegirineNaFe3+Si2O6
Oⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Oⓘ AlbiteNa(AlSi3O8)
Oⓘ Amphibole SupergroupAB2C5(T8O22)W2
Oⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Oⓘ AntigoriteMg3(Si2O5)(OH)4
Oⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Oⓘ CalciteCaCO3
Oⓘ Quartz var. ChalcedonySiO2
Oⓘ ChrysotileMg3(Si2O5)(OH)4
Oⓘ ChromiteFe2+Cr23+O4
Oⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Oⓘ DiopsideCaMgSi2O6
Oⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Oⓘ ForsteriteMg2(SiO4)
Oⓘ GoethiteFe3+O(OH)
Oⓘ HematiteFe2O3
Oⓘ Calcium Amphibole Subgroup var. HornblendeAnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Oⓘ IlmeniteFe2+TiO3
Oⓘ LizarditeMg3(Si2O5)(OH)4
Oⓘ MagnesiteMgCO3
Oⓘ MagnesiochromiteMgCr2O4
Oⓘ Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Oⓘ MagnetiteFe2+Fe23+O4
Oⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Oⓘ NephelineNa3K(Al4Si4O16)
Oⓘ QuartzSiO2
Oⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Oⓘ SpessartineMn32+Al2(SiO4)3
Oⓘ TalcMg3Si4O10(OH)2
Oⓘ TourmalineAD3G6(T6O18)(BO3)3X3Z
Oⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Oⓘ ZirconZr(SiO4)
Oⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Oⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Oⓘ Serpentine SubgroupD3[Si2O5](OH)4
Oⓘ ApatiteCa5(PO4)3A
Oⓘ Olivine GroupM2SiO4
Oⓘ Magnetite var. ChrommagnetiteFe2+(Fe3+,Cr3+)2O4
Oⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
Oⓘ UM1981-08-E:FeIrPtRhRuIr-Fe-Pt-Rh-Ru-O-H ?
FFluorine
Fⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Fⓘ Calcium Amphibole Subgroup var. HornblendeAnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
NaSodium
Naⓘ AegirineNaFe3+Si2O6
Naⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Naⓘ AlbiteNa(AlSi3O8)
Naⓘ NephelineNa3K(Al4Si4O16)
Naⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Naⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
MgMagnesium
Mgⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Mgⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Mgⓘ AntigoriteMg3(Si2O5)(OH)4
Mgⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Mgⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Mgⓘ ChrysotileMg3(Si2O5)(OH)4
Mgⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Mgⓘ DiopsideCaMgSi2O6
Mgⓘ ForsteriteMg2(SiO4)
Mgⓘ LizarditeMg3(Si2O5)(OH)4
Mgⓘ MagnesiteMgCO3
Mgⓘ MagnesiochromiteMgCr2O4
Mgⓘ Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Mgⓘ TalcMg3Si4O10(OH)2
Mgⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Mgⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
AlAluminium
Alⓘ AlbiteNa(AlSi3O8)
Alⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Alⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Alⓘ Calcium Amphibole Subgroup var. HornblendeAnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Alⓘ Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Alⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Alⓘ NephelineNa3K(Al4Si4O16)
Alⓘ SpessartineMn32+Al2(SiO4)3
Alⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Alⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Alⓘ Calcium Amphibole SubgroupAnCa2(C2+5-mCm3+)(Si8-(n+m)Al(n+m))W2
SiSilicon
Siⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Siⓘ AegirineNaFe3+Si2O6
Siⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Siⓘ AlbiteNa(AlSi3O8)
Siⓘ Anthophyllite◻Mg2Mg5(Si8O22)(OH)2
Siⓘ AntigoriteMg3(Si2O5)(OH)4
Siⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Siⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Siⓘ Quartz var. ChalcedonySiO2
Siⓘ ChrysotileMg3(Si2O5)(OH)4
Siⓘ Cummingtonite◻Mg2Mg5(Si8O22)(OH)2
Siⓘ DiopsideCaMgSi2O6
Siⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Siⓘ ForsteriteMg2(SiO4)
Siⓘ Calcium Amphibole Subgroup var. HornblendeAnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Siⓘ LizarditeMg3(Si2O5)(OH)4
Siⓘ Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Siⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Siⓘ NephelineNa3K(Al4Si4O16)
Siⓘ QuartzSiO2
Siⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Siⓘ SpessartineMn32+Al2(SiO4)3
Siⓘ TalcMg3Si4O10(OH)2
Siⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Siⓘ ZirconZr(SiO4)
Siⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Siⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Siⓘ Serpentine SubgroupD3[Si2O5](OH)4
Siⓘ Olivine GroupM2SiO4
Siⓘ Calcium Amphibole SubgroupAnCa2(C2+5-mCm3+)(Si8-(n+m)Al(n+m))W2
Siⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
PPhosphorus
Pⓘ ApatiteCa5(PO4)3A
SSulfur
Sⓘ ArsenopyriteFeAsS
Sⓘ BorniteCu5FeS4
Sⓘ BowieiteRh2S3
Sⓘ ChalcopyriteCuFeS2
Sⓘ CubaniteCuFe2S3
Sⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
Sⓘ ErlichmaniteOsS2
Sⓘ GalenaPbS
Sⓘ Hollingworthite(Rh,Pt,Pd)AsS
Sⓘ Irarsite(Ir,Ru,Rh,Pt)AsS
Sⓘ KashiniteIr2S3
Sⓘ LauriteRuS2
Sⓘ Pentlandite(NixFey)Σ9S8
Sⓘ Sperrylite var. PlatarsitePt(As,S)2
Sⓘ PyriteFeS2
Sⓘ SphaleriteZnS
Sⓘ Hollingworthite-Irarsite Series
Sⓘ PrassoiteRh17S15
Sⓘ KingstoniteRh3S4
Sⓘ Tetrahedrite GroupM2(A6)M1(B4 C2)X3(D4)S1(Y12)S2(Z)
Sⓘ UM1981-13-S:CoFeNiRh(Fe,Ni,Rh,Co)9S8
Sⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
Sⓘ UM1981-15-S:CuFeIrNiRh(Rh,Fe,Ni,Cu,Ir)S
Sⓘ UM1981-16-S:CuFeIrNiRh(Fe,Rh,Ni,Cu,Ir)S
Sⓘ UM1981-17-S:CuIrPtRhPt(Rh,Ir)CuS4
Sⓘ UM1992-24-S:CuFeIrNiPtRh(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
Sⓘ FerrotorryweiseriteRh5Fe10S16
Sⓘ AndrieslombaarditeRhSbS
Sⓘ Roseite(Os,Ir)S
ClChlorine
Clⓘ Calcium Amphibole Subgroup var. HornblendeAnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
KPotassium
Kⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Kⓘ MuscoviteKAl2(AlSi3O10)(OH)2
Kⓘ NephelineNa3K(Al4Si4O16)
CaCalcium
Caⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Caⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Caⓘ CalciteCaCO3
Caⓘ DiopsideCaMgSi2O6
Caⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Caⓘ Calcium Amphibole Subgroup var. HornblendeAnCa2(Z2+5-mZm3+)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
Caⓘ Magnesio-hornblende◻Ca2(Mg4Al)(Si7Al)O22(OH)2
Caⓘ Tremolite◻Ca2Mg5(Si8O22)(OH)2
Caⓘ Hornblende Root Name Group◻Ca2(C42+C3+)(AlSi7O22)W2
Caⓘ Plagioclase(Na,Ca)[(Si,Al)AlSi2]O8
Caⓘ ApatiteCa5(PO4)3A
Caⓘ Calcium Amphibole SubgroupAnCa2(C2+5-mCm3+)(Si8-(n+m)Al(n+m))W2
Caⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
TiTitanium
Tiⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Tiⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Tiⓘ IlmeniteFe2+TiO3
CrChromium
Crⓘ ChromiteFe2+Cr23+O4
Crⓘ MagnesiochromiteMgCr2O4
Crⓘ Magnetite var. ChrommagnetiteFe2+(Fe3+,Cr3+)2O4
MnManganese
Mnⓘ SpessartineMn32+Al2(SiO4)3
FeIron
Feⓘ Actinolite◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2
Feⓘ AegirineNaFe3+Si2O6
Feⓘ AenigmatiteNa4[Fe102+Ti2]O4[Si12O36]
Feⓘ ArsenopyriteFeAsS
Feⓘ Augite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ BiotiteK(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
Feⓘ BorniteCu5FeS4
Feⓘ ChalcopyriteCuFeS2
Feⓘ ChromiteFe2+Cr23+O4
Feⓘ CubaniteCuFe2S3
Feⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
Feⓘ Epidote(CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
Feⓘ FerronickelplatinumPt2FeNi
Feⓘ GoethiteFe3+O(OH)
Feⓘ HematiteFe2O3
Feⓘ IlmeniteFe2+TiO3
Feⓘ IsoferroplatinumPt3Fe
Feⓘ MagnetiteFe2+Fe23+O4
Feⓘ Pentlandite(NixFey)Σ9S8
Feⓘ PyriteFeS2
Feⓘ Riebeckite◻Na2(Fe32+Fe23+)Si8O22(OH)2
Feⓘ TetraferroplatinumPtFe
Feⓘ TulameenitePt2CuFe
Feⓘ Native Platinum var. Polyxene(Pt,Fe,Cu,Ni,Pd,Rh)
Feⓘ Unnamed (Pt-Fe Alloy)Pt2Fe
Feⓘ Magnetite var. ChrommagnetiteFe2+(Fe3+,Cr3+)2O4
Feⓘ Augite var. Ferroaugite(CaxMgyFez)(Mgy1Fez1)Si2O6
Feⓘ UM1981-08-E:FeIrPtRhRuIr-Fe-Pt-Rh-Ru-O-H ?
Feⓘ UM1981-13-S:CoFeNiRh(Fe,Ni,Rh,Co)9S8
Feⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
Feⓘ UM1981-15-S:CuFeIrNiRh(Rh,Fe,Ni,Cu,Ir)S
Feⓘ UM1981-16-S:CuFeIrNiRh(Fe,Rh,Ni,Cu,Ir)S
Feⓘ Tulameenite var. Antimony-bearing Tulameenite(Pt,Sb)2CuFe
Feⓘ UM1992-24-S:CuFeIrNiPtRh(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
Feⓘ FerrotorryweiseriteRh5Fe10S16
CoCobalt
Coⓘ UM1981-13-S:CoFeNiRh(Fe,Ni,Rh,Co)9S8
Coⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
NiNickel
Niⓘ FerronickelplatinumPt2FeNi
Niⓘ Pentlandite(NixFey)Σ9S8
Niⓘ Native Platinum var. Polyxene(Pt,Fe,Cu,Ni,Pd,Rh)
Niⓘ UM1981-13-S:CoFeNiRh(Fe,Ni,Rh,Co)9S8
Niⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
Niⓘ UM1981-15-S:CuFeIrNiRh(Rh,Fe,Ni,Cu,Ir)S
Niⓘ UM1981-16-S:CuFeIrNiRh(Fe,Rh,Ni,Cu,Ir)S
Niⓘ UM1992-24-S:CuFeIrNiPtRh(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
CuCopper
Cuⓘ BorniteCu5FeS4
Cuⓘ ChalcopyriteCuFeS2
Cuⓘ CubaniteCuFe2S3
Cuⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
Cuⓘ TulameenitePt2CuFe
Cuⓘ Native Platinum var. Polyxene(Pt,Fe,Cu,Ni,Pd,Rh)
Cuⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
Cuⓘ UM1981-15-S:CuFeIrNiRh(Rh,Fe,Ni,Cu,Ir)S
Cuⓘ UM1981-16-S:CuFeIrNiRh(Fe,Rh,Ni,Cu,Ir)S
Cuⓘ UM1981-17-S:CuIrPtRhPt(Rh,Ir)CuS4
Cuⓘ Tulameenite var. Antimony-bearing Tulameenite(Pt,Sb)2CuFe
Cuⓘ UM1992-24-S:CuFeIrNiPtRh(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
ZnZinc
Znⓘ SphaleriteZnS
AsArsenic
Asⓘ ArsenopyriteFeAsS
Asⓘ Hollingworthite(Rh,Pt,Pd)AsS
Asⓘ Irarsite(Ir,Ru,Rh,Pt)AsS
Asⓘ Sperrylite var. PlatarsitePt(As,S)2
Asⓘ SperrylitePtAs2
Asⓘ Hollingworthite-Irarsite Series
Asⓘ UM1992-31-Sb:AsPdRh(Pd,Rh)2(Sb,As)
ZrZirconium
Zrⓘ ZirconZr(SiO4)
RuRuthenium
Ruⓘ Irarsite(Ir,Ru,Rh,Pt)AsS
Ruⓘ LauriteRuS2
Ruⓘ Native Osmium(Os,Ir,Ru)
Ruⓘ Hollingworthite-Irarsite Series
Ruⓘ UM1981-08-E:FeIrPtRhRuIr-Fe-Pt-Rh-Ru-O-H ?
RhRhodium
Rhⓘ BowieiteRh2S3
Rhⓘ Cuprorhodsite(Cu+0.5Fe3+0.5)Rh23+S4
Rhⓘ Hollingworthite(Rh,Pt,Pd)AsS
Rhⓘ Irarsite(Ir,Ru,Rh,Pt)AsS
Rhⓘ Native Platinum var. Polyxene(Pt,Fe,Cu,Ni,Pd,Rh)
Rhⓘ Hollingworthite-Irarsite Series
Rhⓘ PrassoiteRh17S15
Rhⓘ KingstoniteRh3S4
Rhⓘ UM1981-08-E:FeIrPtRhRuIr-Fe-Pt-Rh-Ru-O-H ?
Rhⓘ UM1981-29-Te:BiRhRh(Te,Bi)2
Rhⓘ UM1981-13-S:CoFeNiRh(Fe,Ni,Rh,Co)9S8
Rhⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
Rhⓘ UM1981-15-S:CuFeIrNiRh(Rh,Fe,Ni,Cu,Ir)S
Rhⓘ UM1981-16-S:CuFeIrNiRh(Fe,Rh,Ni,Cu,Ir)S
Rhⓘ UM1981-17-S:CuIrPtRhPt(Rh,Ir)CuS4
Rhⓘ UM1992-24-S:CuFeIrNiPtRh(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
Rhⓘ UM1992-31-Sb:AsPdRh(Pd,Rh)2(Sb,As)
Rhⓘ FerrotorryweiseriteRh5Fe10S16
Rhⓘ AndrieslombaarditeRhSbS
PdPalladium
Pdⓘ Hollingworthite(Rh,Pt,Pd)AsS
Pdⓘ StibiopalladinitePd5Sb2
Pdⓘ Native Platinum var. Polyxene(Pt,Fe,Cu,Ni,Pd,Rh)
Pdⓘ Hollingworthite-Irarsite Series
Pdⓘ UM1992-31-Sb:AsPdRh(Pd,Rh)2(Sb,As)
AgSilver
Agⓘ Native Gold var. Electrum(Au,Ag)
Agⓘ Native SilverAg
SbAntimony
Sbⓘ GenkinitePt4Sb3
Sbⓘ StibiopalladinitePd5Sb2
Sbⓘ StumpflitePtSb
Sbⓘ Tulameenite var. Antimony-bearing Tulameenite(Pt,Sb)2CuFe
Sbⓘ UM1992-31-Sb:AsPdRh(Pd,Rh)2(Sb,As)
Sbⓘ AndrieslombaarditeRhSbS
TeTellurium
Teⓘ UM1981-29-Te:BiRhRh(Te,Bi)2
OsOsmium
Osⓘ ErlichmaniteOsS2
Osⓘ Native Osmium(Os,Ir,Ru)
Osⓘ Roseite(Os,Ir)S
IrIridium
Irⓘ Irarsite(Ir,Ru,Rh,Pt)AsS
Irⓘ KashiniteIr2S3
Irⓘ Native Osmium(Os,Ir,Ru)
Irⓘ Hollingworthite-Irarsite Series
Irⓘ UM1981-08-E:FeIrPtRhRuIr-Fe-Pt-Rh-Ru-O-H ?
Irⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
Irⓘ UM1981-15-S:CuFeIrNiRh(Rh,Fe,Ni,Cu,Ir)S
Irⓘ UM1981-16-S:CuFeIrNiRh(Fe,Rh,Ni,Cu,Ir)S
Irⓘ UM1981-17-S:CuIrPtRhPt(Rh,Ir)CuS4
Irⓘ UM1992-24-S:CuFeIrNiPtRh(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
Irⓘ Roseite(Os,Ir)S
PtPlatinum
Ptⓘ FerronickelplatinumPt2FeNi
Ptⓘ GenkinitePt4Sb3
Ptⓘ Hollingworthite(Rh,Pt,Pd)AsS
Ptⓘ Irarsite(Ir,Ru,Rh,Pt)AsS
Ptⓘ IsoferroplatinumPt3Fe
Ptⓘ Sperrylite var. PlatarsitePt(As,S)2
Ptⓘ Native PlatinumPt
Ptⓘ SperrylitePtAs2
Ptⓘ StumpflitePtSb
Ptⓘ TetraferroplatinumPtFe
Ptⓘ TulameenitePt2CuFe
Ptⓘ Native Platinum var. Polyxene(Pt,Fe,Cu,Ni,Pd,Rh)
Ptⓘ Unnamed (Pt-Fe Alloy)Pt2Fe
Ptⓘ Hollingworthite-Irarsite Series
Ptⓘ UM1981-08-E:FeIrPtRhRuIr-Fe-Pt-Rh-Ru-O-H ?
Ptⓘ UM1981-14-S:CuFeIrNiRh(Fe,Ni,Ir,Rh,Cu,Pt,Co)1.06S0.94
Ptⓘ UM1981-17-S:CuIrPtRhPt(Rh,Ir)CuS4
Ptⓘ Tulameenite var. Antimony-bearing Tulameenite(Pt,Sb)2CuFe
Ptⓘ UM1992-24-S:CuFeIrNiPtRh(Rh,Pt,Ir)3(Fe,Ni,Cu)3S8
AuGold
Auⓘ Native Gold var. Electrum(Au,Ag)
Auⓘ Native GoldAu
PbLead
Pbⓘ GalenaPbS
BiBismuth
Biⓘ UM1981-29-Te:BiRhRh(Te,Bi)2

Geochronology

Mineralization age: Miocene : 10.5 ± 2.1 Ma

Important note: This table is based only on rock and mineral ages recorded on mindat.org for this locality and is not necessarily a complete representation of the geochronology, but does give an indication of possible mineralization events relevant to this locality. As more age information is added this table may expand in the future. A break in the table simply indicates a lack of data entered here, not necessarily a break in the geologic sequence. Grey background entries are from different, related, localities.

Geologic TimeRocks, Minerals and Events
Phanerozoic
 Cenozoic
  Neogene
   Miocene
ⓘ Trachyte10.5 ± 2.1 MaWollega-Ilubaror Volcanic Field, West Welega Zone, Oromia Region, Ethiopia

Fossils

This region is too big or complex to display the fossil list, try looking at smaller subregions.

Other Databases

Wikipedia:https://en.wikipedia.org/wiki/West_Welega_Zone
Wikidata ID:Q1709377
GeoNames ID:7732966

Localities in this Region

Ethiopia
Ethiopia

Other Regions, Features and Areas that Intersect

AfricaContinent
African PlateTectonic Plate

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