Lemanskiite

lemanskiite

lavendulan

mansfieldite

senarmontite

Images

Formula: NaCaCu₅(AsO₄)₄Cl.3H₂O
Hydrated arsenate, copper-bearing mineral
Crystal system: Monoclinic
Specific gravity: 3.78
Hardness: 2 to 3
Streak: Sky blue
Colour: Sky blue
Environments:

Hydrothermal environments

Localities

At the type locality, El Guanaco mine, Guanaco, Santa Catalina, Antofagasta Province, Antofagasta, Chile, lemanskiite occurs as a secondary mineral in the oxidised zone of an enargite-rich hydrothermal gold deposit in an arid environment. Associated minerals include lammerite, olivenite, mansfieldite, senarmontite, a crandallite-group mineral, rutile, anatase, lavendulan, quartz and talc. Lavendulan transforms easily to lemanskiite (HOM, Mindat).
Lemanskiite from El Guanaco Mine - Image

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