Formula: K2Cu3FeS4
Origin of name: After locality, Murun alkaline complex, Yakutiya, Russia
Crystal system: Tetragonal
Crystal class: -42m
Twinning:
Unit cell:
Colour: Blue-gray
Diaphaneity:
Luster: Metallic
Habit: Grains < 1μm, in aggregates to 0.2 mm
Hardness: 3
Specific gravity: 3.81
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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