mineral
Chrysocolla
Hydrated copper silicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
AI-generated identification · may be incorrectHardness of 2.5 to 3.5 on the Mohs scale, vibrant cyan to bluish-green color, vitreous to earthy luster, and amorphous or cryptocrystalline structure.
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Physical properties
Hardness of 2.5 to 3.5 on the Mohs scale, vibrant cyan to bluish-green color, vitreous to earthy luster, and amorphous or cryptocrystalline structure.
Formation & geological history
Forms as a secondary mineral in the oxidation zones of copper ore bodies, often precipitating from circulating silica-rich copper solutions.
Uses & applications
Used primarily in ornamental carvings, cabochons, and inlaid jewelry due to its striking turquoise-like coloration.
Geological facts
Often found intergrown with quartz, malachite, and azurite, earning it the nickname 'silica copper.' It was historically used by ancient Greek scholars to solder gold.
Field identification & locations
Easily identified by its distinctive robin's-egg blue or bright cyan color paired with a low hardness. Common localities include the southwestern United States, Chile, and Peru.
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