Szenicsite

szenicsite

powellite

lindgrenite

molybdenite

Images

Formula: Cu3(MoO4)(OH)4
Anhydrous molybdate, paramorph of markascherite
Specific gravity: 4.26
Hardness: 3½ to 4
Streak: Green
Colour: Dark green
Environments

Plutonic igneous environments
Hydrothermal environments

Localities

At the type locality, the Jardinera No. 1 mine, Inca de Oro mining district, Chañaral Province, Atacama, Chile, szenicsite is an uncommon secondary mineral in the oxidised zone of a coppermolybdenum deposit in granite. It was derived by the oxidation of bornite and molybdenite and is associated with powellite, chrysocolla, brochantite, lindgrenite, gold, molybdenite, chalcopyrite, chalcocite, hematite, baryte and quartz (AM 79.1210, HOM). The szenicsite occurrence was an isolated area, approximately 1 cubic meter in size, wherein the szenicsite occurred in cavities in a matrix rich in molybdenite and copper-bearing powellite. Outside of the szenicsite zone, the mineralisation changed from szenicsite to lindgrenite, with decreasing copper. Thereafter, moving further out, the mineralisation was lacking visible copper content and consisted of powellite blebs in the ore (Mindat).

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