Lindackerite

lindackerite

erythrite

zippeite

pitticite

Images

Formula: Cu₅(AsO₄)₂(AsO₃OH)₂.9H₂O
Hydrated arsenate, lindackerite group, lindackerite supergroup, dehydrates at 450^oC
Crystal System: Triclinic
Specific gravity: 3.35 measured, 3.37 calculated
Hardness: 2 to 2½
Streak: Pale greenish white
Colour: Apple-green, light green to colourless in transmitted light
Environments

Hydrothermal environments

Lindackerite occurs in the secondary oxidation zone of some arsenic-bearing copper deposits (Mindat, Webmin).

Localities

At the Cap Garonne Mine, Le Pradet, Var, Provence-Alpes-Côte d'Azur, France, lindackerite is associated with olivenite, chalcanthite, antlerite, pushcharovskite, covellite, tennantite and quartz (HOM).

At the type locality, the Elias mine, Jáchymov, Karlovy Vary District, Karlovy Vary Region, Czech Republic, lindackerite is associated with with erythrite, zippeite, pitticite, annabergite and lavendulan (HOM, Dana, Mindat).
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