Formula: CaMn2O4
Origin of name: After locality; Morocco
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Black, dark red internal reflections
Diaphaneity: Opaque
Luster: Bright
Habit: Crystals flattened, large, to 5 cm
Hardness:
Specific gravity: 4.64
Cleavage: 2; {100} perfect, {001} good
Tenacity:
Streak: Reddish brown
Synonyms/varieties:
Comments:
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