| ⓘ Actinolite Formula: ◻Ca2(Mg4.5-2.5Fe0.5-2.5)Si8O22(OH)2 Localities: Lega Dembi Mine, Megado, Oromia Region, EthiopiaBikilal, Gimbi, West Welega Zone, Oromia Region, EthiopiaGariboro, Oromia Region, EthiopiaKenticha mine, Kenticha pegmatite field, Oromia Region, Ethiopia |
| ⓘ Aegirine Formula: NaFe3+Si2O6 |
| ⓘ Aegirine-augite Formula: (NaaCabFe2+cMgd)(Fe3+eAlfFe2+gMgh)Si2O6 Localities: Reported from at least 9 localities in this region. |
| ⓘ Aenigmatite Formula: Na4[Fe2+10Ti2]O4[Si12O36] |
| ⓘ Albite Formula: Na(AlSi3O8) |
| ⓘ Albite var. Andesine Formula: (Na,Ca)[Al(Si,Al)Si2O8] References: Brotzu, P., & Morbidelli, L., Piccirillo, EM, Traversa, G., 1980: Volcanological and magmatological evidences of Boseti Volcanic Complex (Main Ethiopian Rift). In: Geodynamic evolution of the Afro-Arabic Rift System. Atti dei Convegni dei Lincei. Ace. Naz. dei Lincei. Atti dei Convegni Lincei, 47, 317-366. Brotzu, P., Morbidelli, L., Piccirillo, E. M., & Traversa, G. (1974). Petrological features of Boseti mountains, a complex volcanic system in the axial portion of the Main Ethiopian Rift. Bulletin Volcanologique, 38(1), 206-234. doi.org/10.1007/BF02597811 |
| ⓘ Albite var. Anorthoclase Formula: (Na,K)AlSi3O8 Localities: Reported from at least 8 localities in this region. |
| ⓘ Albite var. Cleavelandite Formula: Na(AlSi3O8) |
| ⓘ Albite var. Oligoclase Formula: (Na,Ca)[Al(Si,Al)Si2O8] |
ⓘ 'Alkali Feldspar'Localities: Reported from at least 9 localities in this region. |
| ⓘ Almandine Formula: Fe2+3Al2(SiO4)3 |
| ⓘ Altaite ? Formula: PbTe |
| ⓘ Amblygonite Formula: LiAl(PO4)F |
| ⓘ 'Amphibole Supergroup' Formula: AB2C5(T8O22)W2 Localities: Wonchi Volcano, Oromia Region, EthiopiaBoseti Volcanic Complex, East Shewa Zone, Oromia Region, EthiopiaDebre Zeyt Distric, East Shewa Zone, Oromia Region, EthiopiaYubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, EthiopiaKarsa Outcrops, Borena Zone, Oromia Region, Ethiopia |
| ⓘ Analcime Formula: Na(AlSi2O6) · H2O |
| ⓘ Anatase Formula: TiO2 |
| ⓘ Andradite Formula: Ca3Fe3+2(SiO4)3 Colour: Beige-pink |
| ⓘ Andrieslombaardite (TL) Formula: RhSbS Type Locality: References: Cabri, L.J., McDonald, A.M., Oberthür, T., Tamura, N., Vymazalová, A., Ross, K.C., Melcher, F. (2023) Andrieslombaardite, RhSbS, a new platinum-group mineral from the platiniferous Onverwacht Pipe, Republic of South Africa. South African Journal of Geology, 126 (2) 151-160 doi:10.25131/sajg.126.0011 |
| ⓘ Anorthite Formula: Ca(Al2Si2O8) References: Brotzu, P., & Morbidelli, L., Piccirillo, EM, Traversa, G., 1980: Volcanological and magmatological evidences of Boseti Volcanic Complex (Main Ethiopian Rift). In: Geodynamic evolution of the Afro-Arabic Rift System. Atti dei Convegni dei Lincei. Ace. Naz. dei Lincei. Atti dei Convegni Lincei, 47, 317-366. Brotzu, P., Morbidelli, L., Piccirillo, E. M., & Traversa, G. (1974). Petrological features of Boseti mountains, a complex volcanic system in the axial portion of the Main Ethiopian Rift. Bulletin Volcanologique, 38(1), 206-234. doi.org/10.1007/BF02597811 |
| ⓘ Anorthite var. Labradorite Formula: (Ca,Na)[Al(Al,Si)Si2O8] References: Brotzu, P., & Morbidelli, L., Piccirillo, EM, Traversa, G., 1980: Volcanological and magmatological evidences of Boseti Volcanic Complex (Main Ethiopian Rift). In: Geodynamic evolution of the Afro-Arabic Rift System. Atti dei Convegni dei Lincei. Ace. Naz. dei Lincei. Atti dei Convegni Lincei, 47, 317-366. Brotzu, P., Morbidelli, L., Piccirillo, E. M., & Traversa, G. (1974). Petrological features of Boseti mountains, a complex volcanic system in the axial portion of the Main Ethiopian Rift. Bulletin Volcanologique, 38(1), 206-234. doi.org/10.1007/BF02597811 |
| ⓘ Anthophyllite Formula: ◻Mg2Mg5(Si8O22)(OH)2 |
| ⓘ Antigorite Formula: Mg3(Si2O5)(OH)4 |
| ⓘ 'Apatite' Formula: Ca5(PO4)3A Localities: Batu Volcanic Centre, Bale Zone, Oromia Region, EthiopiaSalale Mountains, West Shewa Zone, Oromia Region, EthiopiaKenticha mine, Kenticha pegmatite field, Oromia Region, EthiopiaBikilal, Gimbi, West Welega Zone, Oromia Region, Ethiopia |
| ⓘ Arfvedsonite Formula: NaNa2(Fe2+4Fe3+)Si8O22(OH)2 |
| ⓘ Argentopentlandite Formula: Ag(Fe,Ni)8S8 |
| ⓘ Arsenopyrite Formula: FeAsS |
| ⓘ 'Asbestos' |
| ⓘ Augite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Localities: Reported from at least 8 localities in this region. |
| ⓘ Augite var. Ferroaugite Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6 Localities: Fantale stratovolcano, East Shewa Zone, Oromia Region, EthiopiaKoni Volcanic Centre, East Shewa Zone, Oromia Region, EthiopiaJoubdo Stream, Bir Bir River, Yubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, Ethiopia |
| ⓘ Augite var. Ferrohedenbergite Formula: (Ca,Mg,Fe)(Fe,Mg)Si2O6 |
| ⓘ Augite var. Titanium-bearing Augite Formula: (Ca,Na)(Mg,Ti, Fe,Al,)(Si,Al)2O6 |
| ⓘ Aurostibite Formula: AuSb2 |
| ⓘ Awaruite Formula: Ni3Fe |
| ⓘ Beryl Formula: Be3Al2(Si6O18) Localities: Dermidama dyke, Kenticha pegmatite field, Oromia Region, EthiopiaKilkele I dyke, Kenticha pegmatite field, Oromia Region, EthiopiaKenticha mine, Kenticha pegmatite field, Oromia Region, EthiopiaShakiso, Borena Zone, Oromia Region, Ethiopia |
| ⓘ Beryl var. Aquamarine |
| ⓘ Beryl var. Emerald Formula: Be3Al2(Si6O18) |
| ⓘ 'Biotite' Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2 Localities: Reported from at least 6 localities in this region. |
| ⓘ Bornite Formula: Cu5FeS4 Localities: Tulu Kapi gold mine, West Welega Zone, Oromia Region, EthiopiaJoubdo Stream, Bir Bir River, Yubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, EthiopiaYubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, Ethiopia |
| ⓘ Boulangerite Formula: Pb5Sb4S11 |
| ⓘ Bournonite Formula: PbCuSbS3 |
| ⓘ Bowieite Formula: Rh2S3 References: Stanley, C. J., Criddle, A. J., Spratt, J., Roberts, A. C., Szymański, J. T., Welch, M. D. (2005) Kingstonite, (Rh,Ir,Pt)3S4, a new mineral species from Yubdo, Ethiopia. Mineralogical Magazine, 69 (4) 447-453 doi:10.1180/0026461056940262 |
| ⓘ Breithauptite Formula: NiSb |
| ⓘ Brookite Formula: TiO2 |
| ⓘ Calcite Formula: CaCO3 Localities: Reported from at least 6 localities in this region. |
| ⓘ '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' |
| ⓘ Cassiterite Formula: SnO2 References: Küster, Dirk, Romer, Rolf L., Tolessa, Dandena, Zerihun, Desta, Bheemalingeswara, K., Melcher, Frank, Oberthür, Thomas (2009) The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, U–Pb age and Ta mineralization. Mineralium Deposita, 44 (7) 723-750 doi:10.1007/s00126-009-0240-8 |
| ⓘ Chalcopyrite Formula: CuFeS2 Localities: Reported from at least 7 localities in this region. |
ⓘ 'Chlorite Group'Localities: Reported from at least 9 localities in this region. |
| ⓘ Chromite Formula: Fe2+Cr3+2O4 Localities: Kenticha Hill Chromititites, Oromia Region, EthiopiaYubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, EthiopiaJoubdo Stream, Bir Bir River, Yubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, EthiopiaKatawicha region, Oromia Region, Ethiopia |
| ⓘ Chrysotile Formula: Mg3(Si2O5)(OH)4 |
| ⓘ 'Clinopyroxene Subgroup' |
| ⓘ Clinozoisite Formula: (CaCa)(AlAlAl)O[Si2O7][SiO4](OH) |
| ⓘ Columbite-(Fe) Formula: Fe2+Nb2O6 References: Küster, Dirk, Romer, Rolf L., Tolessa, Dandena, Zerihun, Desta, Bheemalingeswara, K., Melcher, Frank, Oberthür, Thomas (2009) The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, U–Pb age and Ta mineralization. Mineralium Deposita, 44 (7) 723-750 doi:10.1007/s00126-009-0240-8 |
| ⓘ 'Columbite-(Fe)-Columbite-(Mn) Series' |
| ⓘ Columbite-(Mn) Formula: Mn2+Nb2O6 References: Küster, Dirk, Romer, Rolf L., Tolessa, Dandena, Zerihun, Desta, Bheemalingeswara, K., Melcher, Frank, Oberthür, Thomas (2009) The Kenticha rare-element pegmatite, Ethiopia: internal differentiation, U–Pb age and Ta mineralization. Mineralium Deposita, 44 (7) 723-750 doi:10.1007/s00126-009-0240-8 |
| ⓘ Cordierite Formula: Mg2Al4Si5O18 |
| ⓘ Corundum Formula: Al2O3 |
| ⓘ Corundum var. Ruby Formula: Al2O3 |
| ⓘ Corundum var. Sapphire Formula: Al2O3 |
| ⓘ Cubanite Formula: CuFe2S3 Localities: Lega Dembi Mine, Megado, Oromia Region, EthiopiaJoubdo Stream, Bir Bir River, Yubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, EthiopiaYubdo District (Joubdo District; Youbdo District; Joubda District), Gimbi, West Welega Zone, Oromia Region, Ethiopia |
| ⓘ Cummingtonite Formula: ◻Mg2Mg5(Si8O22)(OH)2 |
| |
Bir Bir River, Yubdo District, Gimbi, West Welega Zone, Oromia Region, Ethiopia