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Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia

StandardDetailedBy ChemistryMineral Photos (8)Site Photos (7)Search Google

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.





Mineral List:
  		•  Almandine
    Fe
    2+
    3
    		Al
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [P.M. Kartashov data]
    Site Photo
    Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia
    © Martins da Pedra
  		•  Bismuthinite
    Bi
     
    2
    		S
     
    3
    Reference: [P.M. Kartashov data]
  		•  Bismutite
    (BiO)
     
    2
    		CO
     
    3
    Reference: [P.M. Kartashov data]
  		•  Cassiterite
    SnO
     
    2
    Reference: [P.M. Kartashov data]
  		•  Chalcopyrite
    CuFeS
     
    2
    Reference: [P.M. Kartashov data]
  		•  Clinochlore
    (Mg,Fe
    2+
     
    		)
     
    5
    		Al[(OH)
     
    8
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [P.M. Kartashov data]
  		•  Clinochlore
    var: Chromian Clinochlore
    Mg
     
    5
    		(Al,Cr)
     
    2
    		Si
     
    3
    		O
     
    10
    		(OH)
     
    8
    Reference: [P.M. Kartashov data]
  		•  Dravite
    [Na][Mg
     
    3
    		][Al
     
    6
    		][(OH)
     
    3
    		|OH|(BO
     
    3
    		)
     
    3
    		|Si
     
    6
    		O
     
    18
    		]
    Reference: [P.M. Kartashov data]
  		•  Euxenite-(Y)
    (Y,Ca,Ce,U,Th)(Nb,Ta,Ti)
     
    2
    		O
     
    6
    Reference: [P.M. Kartashov data]
  		•  Gahnite
    ZnAl
     
    2
    		O
     
    4
    Reference: [P.M. Kartashov data]
  		•  Gold
    Au
    Reference: [P.M. Kartashov data]
  		•  Hematite
    Fe
     
    2
    		O
     
    3
    Reference: [P.M. Kartashov data]
  		•  Hercynite
    FeAl
     
    2
    		O
     
    4
    Reference: [P.M. Kartashov data]
  		•  Ilmenite
    Fe
    2+
     
    		TiO
     
    3
    Reference: [P.M. Kartashov data]
  		•  Irarsite
    (Ir,Ru,Rh,Pt)AsS
    Reference: [Pavel M. Kartashov data]
    Site Photo
    Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia
    © Pavel M. Kartashov
  		•  Iridium
    (Ir,Os,Ru)
    Reference: [P.M. Kartashov data]
    Site Photo
    Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia
    © Pavel M. Kartashov
  		•  Kyanite
    Al
     
    2
    		[O|SiO
     
    4
    		]
    Reference: [P.M. Kartashov data]
  		•  Laurite
    RuS
     
    2
    Reference: [Pavel M. Kartashov data]
  		•  Lead
    Pb
    Reference: [P.M. Kartashov data]
    Site Photo
    Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia
    © Pavel M. Kartashov
  		•  Magnesiochromite
    MgCr
     
    2
    		O
     
    4
    Reference: [P.M. Kartashov data]
  		•  Magnesite
    var: Ferroan Magnesite
    (Mg,Fe)CO
     
    3
    Reference: [P.M. Kartashov data]
  		•  Magnetite
    Fe
    2+
     
    		Fe
    3+
    2
    		O
     
    4
    Reference: [P.M. Kartashov data]
  		•  Magnetite
    var: Ishkulite
    Fe
    2+
     
    		(Fe
    3+
     
    		,Cr)
     
    2
    		O
     
    4
    Reference: [P.M. Kartashov data]
  		•  Muscovite
    KAl
     
    2
    		[(OH)
     
    2
    		|AlSi
     
    3
    		O
     
    10
    		]
    Reference: [P.M. Kartashov data]
  		•  Osmium
    (Os,Ir,Ru)
    Reference: [P.M. Kartashov data]
  		•  Osmium
    var: Iridosmine
    (Os,Ir)
    Reference: [P.M. Kartashov analytical data]
    Site Photo
    Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia
    © Pavel M. Kartashov
  		•  Phillipsite-Ca
    (Ca
     
    0.5
    		,K,Na,Ba
     
    0.5
    		)
     
    4-7
    		[Al
     
    4-7
    		Si
     
    12-9
    		O
     
    32
    .
     
    		 12H2O
    Reference: [P.M. Kartashov data]
  		•  Pyrite
    FeS
     
    2
    Reference: [P.M. Kartashov data]
  		•  Pyrochlore
    (Ca,Na)
     
    2
    		Nb
     
    2
    		O
     
    6
    		(OH,F)
    Reference: [P.M. Kartashov data]
  		•  Quartz
    SiO
     
    2
    Reference: [P.M. Kartashov data]
  		•  Rutheniridosmine
    (Ir,Os,Ru)
    Reference: [Pavel M. Kartashov data]
  		•  Ruthenium
    (Ru,Ir)
    Reference: [Pavel M. Kartashov data]
    Site Photo
    Tumet river, Assosa region, Wallaga (Welega; Wollega; Ouallega) Province, Ethiopia
    © Pavel M. Kartashov
  		•  Rutile
    TiO
     
    2
    Reference: [P.M. Kartashov data]
  		•  Sillimanite
    Al
     
    2
    		[O|SiO
     
    4
    		]
    Reference: [P.M. Kartashov data]
  		•  Sperrylite
    PtAs
     
    2
    Reference: [P.M. Kartashov data]
  		•  Sphalerite
    (Zn,Fe
    2+
     
    		)S
    Reference: [P.M. Kartashov data]
  		•  Staurolite
    (Fe
    2+
     
    		,Mg,Zn)
     
    1.5-2
    		Al
     
    9
    		[O
     
    6
    		|(OH,O)
     
    2
    		|(SiO
     
    4
    		)
     
    4
    		]
    Reference: [P.M. Kartashov data]
  		•  Talc
    Mg
     
    3
    		Si
     
    4
    		O
     
    10
    		(OH)
     
    2
    Reference: [P.M. Kartashov data]
  		•  Uvarovite
    Ca
     
    3
    		Cr
     
    2
    		[SiO
     
    4
    		]
     
    3
    Reference: [P.M. Kartashov data]
  		•  Violarite
    Fe
    2+
     
    		Ni
    3+
    2
    		S
     
    4
    Reference: [Pavel M. Kartashov data]
  		•  Zircon
    Zr[SiO
     
    4
    		]
    Reference: [P.M. Kartashov data; Pavel M. Kartashov data]
  		•  Zircon
    var: Cyrtolite
    Zr[(SiO
     
    4
    		),(OH)
     
    4
    		]
    Reference: [P.M. Kartashov data]


    42 entries listed. 37 valid minerals.

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