mineral
Chrysocolla
Chrysocolla (Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O)
AI-generated identification · may be incorrectHardness: 2.5-3.5 (Mohs), Color: Cyan/Green/Turquoise, Luster: Vitreous to dull, Crystal Structure: Orthorhombic (often massive/botryoidal), Specific Gravity: 2.0-2.4
- Hardness
- 2
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Physical properties
Hardness: 2.5-3.5 (Mohs), Color: Cyan/Green/Turquoise, Luster: Vitreous to dull, Crystal Structure: Orthorhombic (often massive/botryoidal), Specific Gravity: 2.0-2.4
Formation & geological history
Secondary mineral formed in the oxidation zones of copper ore bodies. It precipitates from silica-rich groundwater reacting with primary copper minerals like chalcopyrite or malachite.
Uses & applications
Minor copper ore, popular as a gemstone for jewelry (cabochons), and a highly sought-after collector mineral.
Geological facts
The name comes from the Greek 'chrysos' (gold) and 'kolla' (glue), referring to its ancient use as a material for soldering gold.
Field identification & locations
Found in arid regions like Arizona, Chile, and the DRC. In the field, look for its distinctive bright blue-green color and the fact that it often sticks to the tongue due to its porous nature.
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Sandstone (with potential mineral staining/concretions)
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Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
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Igneous Pegmatite
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Granite
Granite (Phaneritic intrusive igneous rock)
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