Tumet river, Asosa Zone, Benishangul-Gumuz Region, Ethiopiai
Regional Level Types | |
---|---|
Tumet river | River |
Asosa Zone | Zone |
Benishangul-Gumuz Region | Region |
Ethiopia | Country |
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Latitude & Longitude:
10° North , 34° East (est.)
Estimate based on other nearby localities or region boundaries.
Margin of Error:
~109km
Type:
Mindat Locality ID:
106368
Long-form identifier:
mindat:1:2:106368:7
GUID (UUID V4):
55f0da03-9704-4112-8d74-ce8abae0d76e
Small river crosscut next to a sequence of rocks (from W to E): basalts, granites, aluminous mica shists, hyperbasites, mica shists, basalts. River located between two villages Qurah on South and Agoda on North in western Welega province. Citizens of these villages exploring some gold placers along the middle part of this river.
Formerly in Wallaga (Welega; Wollega; Ouallega) Province.
From 10 g of gold concentrate from Tumet I selected 9 grains of PGM minerals. Most of them belonged to the Os-Ir-Ru ternary system - native iridium, osmium and ruthenium according to current nomenclature. Only two grains had contained Pt minerals with minor inclusions of isoferroplatinum and sperrylite. Also one grain of irarsite was identified. In the local gold market in the village of Qurah I saw about 15 g gold concentrate that contained about two dozen mirror bright hexagonal crystals of Os-Ir-Ru minerals up to 1-1.5 mm in association with some bright-green chrome silicates. The source of PGM minerals in the placers of the Tumet river is a serpentinitized dunite body which has a significant chromite content.
Pavel Kartashov (2009)Select Mineral List Type
Standard Detailed Gallery Strunz Chemical ElementsDetailed Mineral List:
β Almandine Formula: Fe2+3Al2(SiO4)3 References: |
β Annabergite Formula: Ni3(AsO4)2 · 8H2O References: |
β Bismuthinite Formula: Bi2S3 References: |
β Bismutite Formula: (BiO)2CO3 References: |
β Brucite Formula: Mg(OH)2 References: |
β Cassiterite Formula: SnO2 References: |
β Chalcopyrite Formula: CuFeS2 References: |
β Chromite Formula: Fe2+Cr3+2O4 References: |
β Clinochlore Formula: Mg5Al(AlSi3O10)(OH)8 References: |
β Clinochlore var. Chromium-bearing Clinochlore Formula: Mg5(Al,Cr)2Si3O10(OH)8 References: |
β Cobaltite Formula: CoAsS References: |
β Dravite Formula: NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) References: |
β Euxenite-(Y) Formula: (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 References: |
β Gahnite Formula: ZnAl2O4 References: |
β Gold Formula: Au References: |
β Hematite Formula: Fe2O3 References: |
β Hercynite Formula: Fe2+Al2O4 References: |
β Ilmenite Formula: Fe2+TiO3 References: |
β Irarsite Formula: (Ir,Ru,Rh,Pt)AsS References: |
β Iridium Formula: (Ir,Os,Ru) References: |
β Kyanite Formula: Al2(SiO4)O References: |
β Laurite Formula: RuS2 References: |
β Lead Formula: Pb References: |
βͺ Magnesiochromite Formula: MgCr2O4 References: |
β Magnesite Formula: MgCO3 References: |
β Magnesite var. Iron-bearing Magnesite Formula: (Mg,Fe)CO3 References: |
β Magnetite Formula: Fe2+Fe3+2O4 References: |
β Magnetite var. Chrommagnetite Formula: Fe2+(Fe3+,Cr3+)2O4 References: |
β Magnetite var. Ishkulite Formula: Fe2+(Fe3+,Cr3+)2O4 References: |
β Millerite Formula: NiS References: |
β Muscovite Formula: KAl2(AlSi3O10)(OH)2 References: |
β Osmium Formula: (Os,Ir,Ru) References: |
β Osmium var. Iridosmine Formula: (Os,Ir) References: |
β Phillipsite-Ca Formula: (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O References: |
β Polydymite Formula: Ni2+Ni3+2S4 References: |
β Pyrite Formula: FeS2 References: |
β 'Pyrochlore Group' Formula: A2Nb2(O,OH)6Z References: |
β Quartz Formula: SiO2 References: |
β Rutheniridosmine Formula: (Ir,Os,Ru) References: |
β Ruthenium Formula: (Ru,Ir) References: |
β Rutile Formula: TiO2 References: |
β Sillimanite Formula: Al2(SiO4)O References: |
β Sperrylite Formula: PtAs2 References: |
β Sphalerite Formula: ZnS References: |
β Staurolite Formula: Fe2+2Al9Si4O23(OH) References: |
β Talc Formula: Mg3Si4O10(OH)2 References: |
β Uvarovite Formula: Ca3Cr2(SiO4)3 References: |
β Violarite Formula: Fe2+Ni3+2S4 References: |
β Zircon Formula: Zr(SiO4) References: |
β Zircon var. Cyrtolite Formula: Zr[(SiO4),(OH)4] References: |
Gallery:
List of minerals arranged by Strunz 10th Edition classification
Group 1 - Elements | |||
---|---|---|---|
β | Lead | 1.AA.05 | Pb |
β | Gold | 1.AA.05 | Au |
β | Ruthenium | 1.AF.05 | (Ru,Ir) |
β | Osmium | 1.AF.05 | (Os,Ir,Ru) |
β | Rutheniridosmine | 1.AF.05 | (Ir,Os,Ru) |
β | Osmium var. Iridosmine | 1.AF.05 | (Os,Ir) |
β | Iridium | 1.AF.10 | (Ir,Os,Ru) |
Group 2 - Sulphides and Sulfosalts | |||
β | Sphalerite | 2.CB.05a | ZnS |
β | Chalcopyrite | 2.CB.10a | CuFeS2 |
β | Millerite | 2.CC.20 | NiS |
β | Violarite | 2.DA.05 | Fe2+Ni3+2S4 |
β | Polydymite | 2.DA.05 | Ni2+Ni3+2S4 |
β | Bismuthinite | 2.DB.05 | Bi2S3 |
β | Pyrite | 2.EB.05a | FeS2 |
β | Laurite | 2.EB.05a | RuS2 |
β | Sperrylite | 2.EB.05a | PtAs2 |
β | Cobaltite | 2.EB.25 | CoAsS |
β | Irarsite | 2.EB.25 | (Ir,Ru,Rh,Pt)AsS |
Group 4 - Oxides and Hydroxides | |||
β | 'Pyrochlore Group' | 4.00. | A2Nb2(O,OH)6Z |
β | Magnetite var. Ishkulite | 4.BB.05 | Fe2+(Fe3+,Cr3+)2O4 |
β | 4.BB.05 | Fe2+Fe3+2O4 | |
β | var. Chrommagnetite | 4.BB.05 | Fe2+(Fe3+,Cr3+)2O4 |
β | Magnesiochromite | 4.BB.05 | MgCr2O4 |
β | Gahnite | 4.BB.05 | ZnAl2O4 |
β | Hercynite | 4.BB.05 | Fe2+Al2O4 |
β | Chromite | 4.BB.05 | Fe2+Cr3+2O4 |
β | Ilmenite | 4.CB.05 | Fe2+TiO3 |
β | Hematite | 4.CB.05 | Fe2O3 |
β | Quartz | 4.DA.05 | SiO2 |
β | Rutile | 4.DB.05 | TiO2 |
β | Cassiterite | 4.DB.05 | SnO2 |
β | Euxenite-(Y) | 4.DG.05 | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
β | Brucite | 4.FE.05 | Mg(OH)2 |
Group 5 - Nitrates and Carbonates | |||
β | Magnesite | 5.AB.05 | MgCO3 |
β | var. Iron-bearing Magnesite | 5.AB.05 | (Mg,Fe)CO3 |
β | Bismutite | 5.BE.25 | (BiO)2CO3 |
Group 8 - Phosphates, Arsenates and Vanadates | |||
β | Annabergite | 8.CE.40 | Ni3(AsO4)2 Β· 8H2O |
Group 9 - Silicates | |||
β | Uvarovite | 9.AD.25 | Ca3Cr2(SiO4)3 |
β | Almandine | 9.AD.25 | Fe2+3Al2(SiO4)3 |
β | Zircon | 9.AD.30 | Zr(SiO4) |
β | var. Cyrtolite | 9.AD.30 | Zr[(SiO4),(OH)4] |
β | Sillimanite | 9.AF.05 | Al2(SiO4)O |
β | Kyanite | 9.AF.15 | Al2(SiO4)O |
β | Staurolite | 9.AF.30 | Fe2+2Al9Si4O23(OH) |
β | Dravite | 9.CK.05 | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
β | Talc | 9.EC.05 | Mg3Si4O10(OH)2 |
β | Muscovite | 9.EC.15 | KAl2(AlSi3O10)(OH)2 |
β | Clinochlore | 9.EC.55 | Mg5Al(AlSi3O10)(OH)8 |
β | var. Chromium-bearing Clinochlore | 9.EC.55 | Mg5(Al,Cr)2Si3O10(OH)8 |
β | Phillipsite-Ca | 9.GC.10 | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
List of minerals for each chemical element
H | Hydrogen | |
---|---|---|
H | β Annabergite | Ni3(AsO4)2 · 8H2O |
H | β Brucite | Mg(OH)2 |
H | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
H | β Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
H | β Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
H | β Muscovite | KAl2(AlSi3O10)(OH)2 |
H | β Pyrochlore Group | A2Nb2(O,OH)6Z |
H | β Staurolite | Fe22+Al9Si4O23(OH) |
H | β Talc | Mg3Si4O10(OH)2 |
H | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
H | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
B | Boron | |
B | β Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
C | Carbon | |
C | β Bismutite | (BiO)2CO3 |
C | β Magnesite var. Iron-bearing Magnesite | (Mg,Fe)CO3 |
C | β Magnesite | MgCO3 |
O | Oxygen | |
O | β Annabergite | Ni3(AsO4)2 · 8H2O |
O | β Almandine | Fe32+Al2(SiO4)3 |
O | β Bismutite | (BiO)2CO3 |
O | β Magnesite var. Iron-bearing Magnesite | (Mg,Fe)CO3 |
O | β Brucite | Mg(OH)2 |
O | β Cassiterite | SnO2 |
O | β Chromite | Fe2+Cr23+O4 |
O | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
O | β Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
O | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
O | β Gahnite | ZnAl2O4 |
O | β Hematite | Fe2O3 |
O | β Hercynite | Fe2+Al2O4 |
O | β Ilmenite | Fe2+TiO3 |
O | β Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
O | β Kyanite | Al2(SiO4)O |
O | β Magnesite | MgCO3 |
O | β Magnesiochromite | MgCr2O4 |
O | β Magnetite | Fe2+Fe23+O4 |
O | β Muscovite | KAl2(AlSi3O10)(OH)2 |
O | β Pyrochlore Group | A2Nb2(O,OH)6Z |
O | β Quartz | SiO2 |
O | β Rutile | TiO2 |
O | β Sillimanite | Al2(SiO4)O |
O | β Staurolite | Fe22+Al9Si4O23(OH) |
O | β Talc | Mg3Si4O10(OH)2 |
O | β Uvarovite | Ca3Cr2(SiO4)3 |
O | β Zircon | Zr(SiO4) |
O | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
O | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
O | β Magnetite var. Ishkulite | Fe2+(Fe3+,Cr3+)2O4 |
O | β Magnetite var. Chrommagnetite | Fe2+(Fe3+,Cr3+)2O4 |
Na | Sodium | |
Na | β Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
Na | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
Mg | Magnesium | |
Mg | β Magnesite var. Iron-bearing Magnesite | (Mg,Fe)CO3 |
Mg | β Brucite | Mg(OH)2 |
Mg | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
Mg | β Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
Mg | β Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
Mg | β Magnesite | MgCO3 |
Mg | β Magnesiochromite | MgCr2O4 |
Mg | β Talc | Mg3Si4O10(OH)2 |
Al | Aluminium | |
Al | β Almandine | Fe32+Al2(SiO4)3 |
Al | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
Al | β Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
Al | β Gahnite | ZnAl2O4 |
Al | β Hercynite | Fe2+Al2O4 |
Al | β Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
Al | β Kyanite | Al2(SiO4)O |
Al | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Al | β Sillimanite | Al2(SiO4)O |
Al | β Staurolite | Fe22+Al9Si4O23(OH) |
Al | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
Si | Silicon | |
Si | β Almandine | Fe32+Al2(SiO4)3 |
Si | β Clinochlore | Mg5Al(AlSi3O10)(OH)8 |
Si | β Dravite | NaMg3Al6(Si6O18)(BO3)3(OH)3(OH) |
Si | β Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
Si | β Kyanite | Al2(SiO4)O |
Si | β Muscovite | KAl2(AlSi3O10)(OH)2 |
Si | β Quartz | SiO2 |
Si | β Sillimanite | Al2(SiO4)O |
Si | β Staurolite | Fe22+Al9Si4O23(OH) |
Si | β Talc | Mg3Si4O10(OH)2 |
Si | β Uvarovite | Ca3Cr2(SiO4)3 |
Si | β Zircon | Zr(SiO4) |
Si | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
Si | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
S | Sulfur | |
S | β Bismuthinite | Bi2S3 |
S | β Chalcopyrite | CuFeS2 |
S | β Cobaltite | CoAsS |
S | β Irarsite | (Ir,Ru,Rh,Pt)AsS |
S | β Laurite | RuS2 |
S | β Millerite | NiS |
S | β Polydymite | Ni2+Ni23+S4 |
S | β Pyrite | FeS2 |
S | β Sphalerite | ZnS |
S | β Violarite | Fe2+Ni23+S4 |
K | Potassium | |
K | β Muscovite | KAl2(AlSi3O10)(OH)2 |
K | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
Ca | Calcium | |
Ca | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
Ca | β Uvarovite | Ca3Cr2(SiO4)3 |
Ca | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
Ti | Titanium | |
Ti | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
Ti | β Ilmenite | Fe2+TiO3 |
Ti | β Rutile | TiO2 |
Cr | Chromium | |
Cr | β Chromite | Fe2+Cr23+O4 |
Cr | β Clinochlore var. Chromium-bearing Clinochlore | Mg5(Al,Cr)2Si3O10(OH)8 |
Cr | β Magnesiochromite | MgCr2O4 |
Cr | β Uvarovite | Ca3Cr2(SiO4)3 |
Cr | β Magnetite var. Ishkulite | Fe2+(Fe3+,Cr3+)2O4 |
Cr | β Magnetite var. Chrommagnetite | Fe2+(Fe3+,Cr3+)2O4 |
Fe | Iron | |
Fe | β Almandine | Fe32+Al2(SiO4)3 |
Fe | β Magnesite var. Iron-bearing Magnesite | (Mg,Fe)CO3 |
Fe | β Chalcopyrite | CuFeS2 |
Fe | β Chromite | Fe2+Cr23+O4 |
Fe | β Hematite | Fe2O3 |
Fe | β Hercynite | Fe2+Al2O4 |
Fe | β Ilmenite | Fe2+TiO3 |
Fe | β Magnetite | Fe2+Fe23+O4 |
Fe | β Pyrite | FeS2 |
Fe | β Staurolite | Fe22+Al9Si4O23(OH) |
Fe | β Violarite | Fe2+Ni23+S4 |
Fe | β Magnetite var. Ishkulite | Fe2+(Fe3+,Cr3+)2O4 |
Fe | β Magnetite var. Chrommagnetite | Fe2+(Fe3+,Cr3+)2O4 |
Co | Cobalt | |
Co | β Cobaltite | CoAsS |
Ni | Nickel | |
Ni | β Annabergite | Ni3(AsO4)2 · 8H2O |
Ni | β Millerite | NiS |
Ni | β Polydymite | Ni2+Ni23+S4 |
Ni | β Violarite | Fe2+Ni23+S4 |
Cu | Copper | |
Cu | β Chalcopyrite | CuFeS2 |
Zn | Zinc | |
Zn | β Gahnite | ZnAl2O4 |
Zn | β Sphalerite | ZnS |
As | Arsenic | |
As | β Annabergite | Ni3(AsO4)2 · 8H2O |
As | β Cobaltite | CoAsS |
As | β Irarsite | (Ir,Ru,Rh,Pt)AsS |
As | β Sperrylite | PtAs2 |
Y | Yttrium | |
Y | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
Zr | Zirconium | |
Zr | β Zircon | Zr(SiO4) |
Zr | β Zircon var. Cyrtolite | Zr[(SiO4),(OH)4] |
Nb | Niobium | |
Nb | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
Nb | β Pyrochlore Group | A2Nb2(O,OH)6Z |
Ru | Ruthenium | |
Ru | β Irarsite | (Ir,Ru,Rh,Pt)AsS |
Ru | β Iridium | (Ir,Os,Ru) |
Ru | β Laurite | RuS2 |
Ru | β Osmium | (Os,Ir,Ru) |
Ru | β Rutheniridosmine | (Ir,Os,Ru) |
Ru | β Ruthenium | (Ru,Ir) |
Rh | Rhodium | |
Rh | β Irarsite | (Ir,Ru,Rh,Pt)AsS |
Sn | Tin | |
Sn | β Cassiterite | SnO2 |
Ba | Barium | |
Ba | β Phillipsite-Ca | (Ca0.5,K,Na,Ba0.5)4-7[Al4-7Si12-9O32] . 12H2O |
Ce | Cerium | |
Ce | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
Ta | Tantalum | |
Ta | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
Os | Osmium | |
Os | β Iridium | (Ir,Os,Ru) |
Os | β Osmium | (Os,Ir,Ru) |
Os | β Rutheniridosmine | (Ir,Os,Ru) |
Os | β Osmium var. Iridosmine | (Os,Ir) |
Ir | Iridium | |
Ir | β Irarsite | (Ir,Ru,Rh,Pt)AsS |
Ir | β Iridium | (Ir,Os,Ru) |
Ir | β Osmium | (Os,Ir,Ru) |
Ir | β Rutheniridosmine | (Ir,Os,Ru) |
Ir | β Ruthenium | (Ru,Ir) |
Ir | β Osmium var. Iridosmine | (Os,Ir) |
Pt | Platinum | |
Pt | β Irarsite | (Ir,Ru,Rh,Pt)AsS |
Pt | β Sperrylite | PtAs2 |
Au | Gold | |
Au | β Gold | Au |
Pb | Lead | |
Pb | β Lead | Pb |
Bi | Bismuth | |
Bi | β Bismuthinite | Bi2S3 |
Bi | β Bismutite | (BiO)2CO3 |
Th | Thorium | |
Th | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
U | Uranium | |
U | β Euxenite-(Y) | (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)2O6 |
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Tumet river, Asosa Zone, Benishangul-Gumuz Region, Ethiopia