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n.1.(Min.) A massive mineral of tin-white or steel-gray color, an arsenide of copper.
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.
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Associated minerals are: cuprite, copper, silver, algodonite, domeykite, malachite, connellite, olivenite, theoparacelsite and gerhardtite.
Occurrence: Associated minerals are: olivenite, conichalcite, clinotyrolite, cornubite, kolfanite, pharmacosiderite, gerhardtite, atacamite, gilmarite, wallkilldellite-(Fe), cuprite, domeykite, algodonite and native copper.
In the Andrassy III section domeykite occurs in small cavities in spongy siderite ore, as opaque, gray coatings, fissure fillings, and as spherical aggregates up to 1 mm in diameter.