Formula: Cu2OCl2
Origin of name: From Greek for black and young sprout
Crystal system: Orthorhombic
Crystal class: 2/m 2/m 2/m
Twinning:
Unit cell:
Colour: Black to bluish black
Diaphaneity:
Luster: Vitreous
Habit: Plates to 1 cm across
Hardness:
Specific gravity: 4.08
Cleavage: 1; perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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