mineral
Chrysocolla in Cuprite / Mixed Copper Ore
Hydrated copper silicate and copper(I) oxide, (Cu,Al)2H2Si2O5(OH)4·nH2O and Cu2O
Hardness ranges from 3.5 to 5 on the Mohs scale depending on the dominant mineral. Colors include bright turquoise blue, green, brown, and red flecks of cuprite. Luster is vitreous to earthy, with a cryptocrystalline or amorphous structure.
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Physical properties
Hardness ranges from 3.5 to 5 on the Mohs scale depending on the dominant mineral. Colors include bright turquoise blue, green, brown, and red flecks of cuprite. Luster is vitreous to earthy, with a cryptocrystalline or amorphous structure.
Formation & geological history
Formed in the oxidation zones of copper ore bodies, typically through the alteration of primary copper sulfides in arid environments.
Uses & applications
Commonly collected by mineral enthusiasts, used in cabochons and inlay work for jewelry, and occasionally as a minor copper ore.
Geological facts
The vibrant blue-green colors are entirely due to the presence of copper. It is often found associated with malachite, azurite, and native copper.
Field identification & locations
Identify by its distinctive blue and green patches mixed with earthy matrix, often displaying red cuprite inclusions. Found in major copper-producing regions such as the southwestern United States, Chile, and the DRC.
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