Formula: NiAs2
Origin of name: For G. Krutov, Russian mineralogist
Crystal system: Cubic
Crystal class: 23
Twinning:
Unit cell:
Colour: Grayish-white
Diaphaneity: Opaque
Luster: Metallic
Habit: Microscopic grains
Hardness: 5.5
Specific gravity: 6.93
Cleavage:
Tenacity:
Streak:
Synonyms/varieties:
Comments: Trimorphous with rammelsbergite and pararammelsbergite
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