Formula: ZnCr2S4
Origin of name: For P.I. Kalinin, Russian mineralogist
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Black
Diaphaneity:
Luster: Adamantine
Habit: Irregular slag-like aggregates, microscopic
Hardness: 5
Specific gravity: 4
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Strongly magnetic
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