Yvonite

yvonite

geminite

lindackerite

arsenopyrite

Images

Formula: Cu(AsO₃OH).2H₂O
Arsenate, krautite group
Crystal System: Triclinic
Specific gravity: 3.20 measured, 3.22 calculated
Hardness: 3½ to 4
Streak: Blue
Colour: Turquoise-blue
Environments

Hydrothermal environments

Localities

At the type locality, the Salsigne mine, Salsigne, Carcassonne, Aude, Occitanie, France, yvonite has been found as a secondary mineral formed on specimens from mine dumps at the gold-bearing arsenic sulphide deposit. Associated minerals include geminite, lindackerite, arsenopyrite, native bismuth, chalcopyrite and pushcharovskite (AM 83.383-389).

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