mineral
Azurite in Matrix
Azurite (Cu3(CO3)2(OH)2) in Rhyolite or Sandstone matrix
Hardness: 3.5-4 (for azurite); Color: Deep blue to cyan-blue spots on a tan/grey rocky matrix; Luster: Vitreous to dull; Crystal structure: Monoclinic; Cleavage: Good; Specific gravity: 3.7-3.9
- Hardness
- 3
- Color
- Deep blue to cyan-blue spots on a tan/grey rocky matrix
- Luster
- Vitreous to dull
Identified More mineral →
Explore Azurite in Matrix in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 3.5-4 (for azurite); Color: Deep blue to cyan-blue spots on a tan/grey rocky matrix; Luster: Vitreous to dull; Crystal structure: Monoclinic; Cleavage: Good; Specific gravity: 3.7-3.9
Formation & geological history
Secondary mineral formed in the oxidized zones of copper ore deposits. It occurs when carbonated waters descend into the earth and react with copper-bearing minerals. The matrix is typically host rock like limestone, sandstone, or igneous rhyolite.
Uses & applications
Used primarily as a minor ore of copper, as a pigment historically, in jewelry as cabochons, and as a popular mineral specimen for collectors.
Geological facts
In antiquity, azurite was known as Lapis Armenium. It was a primary source of blue pigment for painters in the Middle Ages and Renaissance, though it has the tendency to weather into green malachite over time.
Field identification & locations
Identify by its distinctive bright blue color and association with other copper minerals like malachite. In the field, look for blue staining in copper-rich mining districts like those in Arizona or Morocco.
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