Formula: (Zn,Mn) O
Origin of name: from composition
Crystal system: Hexagonal
Crystal class: 6mm
Twinning: on {0001}
Unit cell: a = 3.250 Å, c = 5.207 Å
Colour: Deep yellow to orange-yellow to dark red
Diaphaneity:
Luster: Subadamantine
Habit: Crystals hemimorphic pyramidal, often corroded and rounded; massive platy, compact or granular
Hardness: 4
Specific gravity: 5.68
Cleavage: 2; {10-10}perfect; {0001} parting
Tenacity: Conchoidal; brittle
Streak: Orange-yellow
Synonyms/varieties:
Comments:
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