Formula: (Cu,Mg)Fe2O4
Origin of name: From copper and spinel
Crystal system: Cubic
Crystal class: 4/m -3 2/m
Twinning:
Unit cell:
Colour: Black
Diaphaneity: Opaque
Luster:
Habit: Massive, irregular grains
Hardness: 6.5
Specific gravity:
Cleavage: None
Tenacity:
Streak: Black
Synonyms/varieties:
Comments:
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