mineral
Chrysocolla in Quartz
Hydrated copper phyllosilicate with silicon dioxide (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O + SiO2)
Hardness: 2-4 for chrysocolla, 7 for quartz; Color: Bright cyan, turquoise blue, green, mixed with white quartz; Luster: Vitreous to earthy; Crystal structure: Amorphous/Cryptocrystalline; Specific gravity: 2.0-2.4
- Hardness
- 2-4 for chrysocolla, 7 for quartz
- Color
- Bright cyan, turquoise blue, green, mixed with white quartz
- Luster
- Vitreous to earthy
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Physical properties
Hardness: 2-4 for chrysocolla, 7 for quartz; Color: Bright cyan, turquoise blue, green, mixed with white quartz; Luster: Vitreous to earthy; Crystal structure: Amorphous/Cryptocrystalline; Specific gravity: 2.0-2.4
Formation & geological history
Formed in the oxidation zones of copper ore bodies, typically secondary mineral deposits formed through hydrothermal activity or weathering.
Uses & applications
Used primarily as a decorative stone, in cabochons for jewelry, and as a collector's specimen.
Geological facts
Chrysocolla gets its vivid blue-green color from the presence of copper. The ancient Greeks used it as a soldering material for gold.
Field identification & locations
Found worldwide in copper-rich regions such as the southwestern United States, Chile, Peru, and Russia. Identified by its striking turquoise-blue coloration matrix.
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