mineral
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
AI-generated identification · may be incorrectHardness is 2.5 to 3.5 on the Mohs scale. Colors range from cyan, turquoise blue, to deep green with brown matrix patterns. Luster is vitreous to earthy, and it has an amorphous to cryptocrystalline crystal structure.
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Physical properties
Hardness is 2.5 to 3.5 on the Mohs scale. Colors range from cyan, turquoise blue, to deep green with brown matrix patterns. Luster is vitreous to earthy, and it has an amorphous to cryptocrystalline crystal structure.
Formation & geological history
Forms as a secondary mineral in the oxidation zones of copper ore bodies. It precipitates from silica-rich aqueous solutions in arid environments.
Uses & applications
Primarily used in high-end jewelry as cabochons, as well as an ornamental stone and collector specimen.
Geological facts
Chrysocolla is often confused with turquoise due to its similar color and copper content. The ancient Greeks used it as a material to solder gold.
Field identification & locations
Identified by its vibrant blue-green coloration, low hardness, and association with other copper minerals like malachite and azurite. Found globally in copper-mining regions such as the southwestern United States, Chile, and Peru.
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Epidote
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Granite
Granite (Phaneritic intrusive igneous rock)
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