mineral
Chrysocolla
Chrysocolla: Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
Hardness: 2.5-3.5 (can reach 7 if silicated); Color: cyan, turquoise-blue, or green; Luster: vitreous to earthy; Crystal Structure: Amorphous or Orthorhombic; Specific Gravity: 2.0-2.4.
- Hardness
- 2
- Color
- cyan, turquoise-blue, or green
- Luster
- vitreous to earthy
Identified More mineral →
Explore Chrysocolla in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 2.5-3.5 (can reach 7 if silicated); Color: cyan, turquoise-blue, or green; Luster: vitreous to earthy; Crystal Structure: Amorphous or Orthorhombic; Specific Gravity: 2.0-2.4.
Formation & geological history
Formed in the oxidation zones of copper ore bodies where copper-bearing solutions react with silica-rich water. It is a secondary mineral often found with malachite and azurite.
Uses & applications
Predominantly used as a minor copper ore, for ornamental carvings, and in lapidary work for jewelry cabochons.
Geological facts
Its name comes from the Greek 'chrysos' (gold) and 'kolla' (glue), referring to its ancient use as a flux for soldering gold. It is often confused with turquoise but is generally softer.
Field identification & locations
Identify by its vivid blue-green color and its 'stick-to-the-tongue' property due to its high porosity. Commonly found in copper-rich regions like Arizona (USA), Chile, DRC, and Israel.
More like this
Other mineral specimens
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Schist
Schist
Metamorphic
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Gypsum (variety Selenite or Alabaster)
Calcium sulfate dihydrate (CaSO4·2H2O)
Mineral
Nephrite Jade
Nephrite
Mineral/Rock
Granite
Granite (Phaneritic intrusive igneous rock)
igneous