Lemanskiite

minerals

lavendulan

mansfieldite

senarmontite

Formula: NaCaCu5(AsO4)4Cl.3H2O
Hydrated arsenate
Specific gravity: 3.78
Hardness: 2 to 3
Streak: Sky blue
Colour: Sky blue
Environments:

Hydrothermal environments

Localities

At the type locality, the 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).

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