Tsumoite

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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