Formula: Cu2(Zn,Fe)SnS4
Origin of name: Locality; Kester deposit, Yano-Adychansk, Russia
Crystal system: Tetragonal
Crystal class: -42m
Twinning:
Unit cell:
Colour: Greenish black
Diaphaneity: Opaque
Luster: Metallic
Habit: Massive
Hardness: 4.5
Specific gravity: 4.54 to 4.59
Cleavage: None
Tenacity:
Streak: Black
Synonyms/varieties:
Comments:
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