Formula: Cu2(SO4)O
Origin of name: From Greek for fallacious and to appear
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Brown to nearly black
Diaphaneity: Translucent to opaque
Luster:
Habit: Crystals, elongated, somewhat tabular, minute; often striated parallel to elongation
Hardness: 3
Specific gravity: 4.17
Cleavage: 1; {-101} perfect
Tenacity:
Streak: Yellowish brown, brown
Synonyms/varieties:
Comments:
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