Domeykite can be used in many similar ways to those of native copper . Not only is it used as a minor ore of copper, it is also used for similar ornamental purposes. It is cut and polished and made into attractive cabochons, clocks, bookends and carvings. Its metallic luster and odd color make it a very unusual ornamental stone. Luster is metallic.
Crystals are opaque.
Crystal Habits include botryoidal, reniform and massive specimens. Streak is gray black. Associated Minerals include calcite , nickeline , copper and other copper ore minerals. Notable Occurrences include the type locality of Algodones Mine, Coquimbo, Chile and also the Mohawk Mine, Keweenaw County, Michigan, USA and the copper mines of Ontario, Canada. Best Field Indicators are color, crystal habit, streak, density and luster.