Formula: In
Origin of name: From Latin indicus - blue colour
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: Gray with yellowish tint
Diaphaneity: Opaque
Luster: Metallic
Habit: Massive; embedded grains
Hardness: 3
Specific gravity: 7.2 to 7.42
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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