Formula: FeSi2
Origin of name: From iron (Latin ferrum), and di = 2, and silicon
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: Steel-gray
Diaphaneity: Opaque
Luster: Metallic
Habit: Tiny grains
Hardness: ~ 6.3
Specific gravity: 5.05
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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