Liroconite

minerals

linarite

caledonite

cornwallite

Formula: Cu2Al(AsO4)(OH)4.4H2O
Hydrated arsenate containing hydroxyl
Specific gravity: 2.9
Hardness: 2 to 2½
Streak: Light blue
Colour: Sky-blue to green
Solubility: Soluble in acids
Common impurities: P
Environment

Hydrothermal environments

Liroconite is a rare secondary mineral found in oxidised zones of copper deposits, associated with olivenite, chalcophyllite, clinoclase, cornwallite, strashimirite, malachite, cuprite and “limonite" (HOM).

At Cerro Gordo mine, Inyo county, California, USA, liroconite occurs with linarite and caledonite (Dana).

At the type locality, Wheal Gorland, Cornwall, England, liroconite occurs with cornubite and cornwallite (Dana).

At Wheal Unity, Cornwall, England liroconite has been found on cuprite associated with malachite, azurite and clinoclase (AM 36.484).

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