mineral
Chrysocolla with Malachite
Cu2-xAlx(H2-xSi2O5)(OH)4%CnH2O (Chrysocolla)
Hardness: 2.0-4.0 on Mohs scale. Color: Bright cyan blue to turquoise green mixed with dark matrix. Luster: Vitreous to earthy. Crystal System: Orthorhombic/Amorphous. Specific Gravity: 2.0-2.4.
- Hardness
- 2
- Color
- Bright cyan blue to turquoise green mixed with dark matrix
- Luster
- Vitreous to earthy
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Physical properties
Hardness: 2.0-4.0 on Mohs scale. Color: Bright cyan blue to turquoise green mixed with dark matrix. Luster: Vitreous to earthy. Crystal System: Orthorhombic/Amorphous. Specific Gravity: 2.0-2.4.
Formation & geological history
Secondary mineral formed in the oxidation zones of copper ore deposits, through the alteration of primary copper minerals by percolating silica-rich groundwater.
Uses & applications
Used primarily as an gemstone for cabochons, carvings, decorative specimens, and historically as a minor ore of copper.
Geological facts
Chrysocolla was named by Theophrastus in 315 BC from the Greek words 'chrysos' (gold) and 'kolla' (glue), referring to its use as a flux to solder gold.
Field identification & locations
Identify in the field by its distinctive turquoise blue-green color, low hardness, and association with other copper minerals like malachite, azurite, and cuprite. Commonly found in copper mining districts such as Arizona (USA), Chile, DRC, and Peru.
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