Formula: Bi3Te2S
Origin of name: from sulfur and and chemical relation to tsumoite
Crystal system: hexagonal
Crystal class: -3 2/m
Twinning:
Unit cell:
Colour: gray-white
Diaphaneity: opaque
Luster: metallic
Habit: rim around tsumoite, 1 mm thick, aggregates
Hardness: 1
Specific gravity: 8.13
Cleavage: 1; perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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