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Comments: Gray metallic tsumoite in milky quartz.
Location: Biorkdalsgruvan, Sweden.
Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Tsumoite: BiTe Smirnite: Bi2Te++++O5
Comments: Grayish to olive-green crusts of smirnite over quartz and metallic-grey tsumoite. Smirnite composition is (Bi1.98Pb.02)2.00Te1.00O4.99.
Location: Shilovo-Isetskii mine, Ekaterinburg (Sverdlovsk), Ekaterinburgskaya (Sverdlovskaya) Oblast', Middle Urals, Urals Region, Russia. Ex Fedor V. Chukhrov specimen collected before WWII.
Scale: Picture Size 12x10 mm.
© Pavel M. Kartashov
Tsumoite: BiTe Volynskite: AgBiTe2
Comments: BSE image of composite grain of volynskite (AgBiTe) and tsumoite (BiTe) associated with sphalerite in chalcopyrite.
Location: Stobie deposit, South Range breccia belt, Supergiant Ni-Cu-PGE Sudbury District, Ontario, Canada.
Scale: See Image.
© National Resouces of Canada