Formula: CaCuSi4O10
Origin of name: From copper and for Carol Riva, mineralogist
Crystal system: Tetragonal
Crystal class: 4/m 2/m 2/m
Twinning:
Unit cell:
Colour: Azure-blue, blue
Diaphaneity:
Luster: Vitreous
Habit: Crystals tabular, minute
Hardness: ~ 5
Specific gravity: 3.08
Cleavage: 1; {001} perfect
Tenacity:
Streak:
Synonyms/varieties:
Comments:
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