mineral
Chrysocolla
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
AI-generated identification · may be incorrectHardness 2.0 to 4.0 on Mohs scale, vivid cyan blue to greenish-blue color, vitreous to earthy luster, amorphous or cryptocrystalline structure, fragile with conchoidal fracture.
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Physical properties
Hardness 2.0 to 4.0 on Mohs scale, vivid cyan blue to greenish-blue color, vitreous to earthy luster, amorphous or cryptocrystalline structure, fragile with conchoidal fracture.
Formation & geological history
Formed as a secondary copper mineral in the oxidized zone of copper ore bodies, often co-occurring with malachite, azurite, and quartz.
Uses & applications
Used primarily as an gemstone for cabochons, beads, and carvings, as a minor ore of copper, and as a popular collector specimen.
Geological facts
Ancient Greeks used chrysocolla as a flux for soldering gold; its name derives from the Greek 'chrysos' (gold) and 'kolla' (glue).
Field identification & locations
Identified by its distinctive sky-blue to teal color and soft, porous feel. Frequently found in copper mining regions such as Arizona (USA), Chile, Peru, Israel, and the DRC.
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Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Granite
Granite (Phaneritic intrusive igneous rock)
igneous