Formula: Fe,Ni
Origin of name: From Greek for pole or shaft
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Steel-gray to iron-black
Diaphaneity: Opaque
Luster: Metallic
Habit: Plates and lamellar masses
Hardness: 4
Specific gravity: 7.8
Cleavage: None
Tenacity:
Streak:
Synonyms/varieties:
Comments: Magnetic; common in meteorites
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