Formula: K2Cu3O(SO4)3
Origin of name: For S. Fedotov
Crystal system: Monoclinic
Crystal class: 2/m
Twinning:
Unit cell:
Colour: Emerald- to grass-green
Diaphaneity: Transparent
Luster: Silky to vitreous
Habit: Crystals to 5 mm x 0.1 mm flattened and irregular in outline, micaceous, in aggregates forming incrustations
Hardness: 2.5
Specific gravity: 3.20
Cleavage: 1; {100} perfect
Tenacity:
Streak: Light grass-green
Synonyms/varieties:
Comments:
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