Formula: BiTe
Origin of name: after locality Tsumo mine, Shimane prefecture, Honshu, Japan
Crystal system: Trigonal
Crystal class: 3 2/m
Twinning:
Unit cell: a = 4.422, c = 24.05
Colour: Silver-white
Diaphaneity: Opaque
Luster: Metallic
Habit: Crystals tabular, in irregular aggregates
Hardness: 2 to 2.5
Specific gravity: 8.16
Cleavage: [0001] perfect
Tenacity:
Streak: Steel-gray
Synonyms/varieties:
Comments:
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