2" Fibrous Aurichalcite Crystal Cluster - Mexico
This colorful specimen contains blue-green, fibrous aurichalcite crystal clusters that were collected from the Ojuela Mine in Durango, Mexico. These crystals formed from a bright orange limonitic matrix.
Aurichalcite is a secondary mineral that forms in the oxidation zones of copper and zinc ore deposits. It has the chemical formula (Zn,Cu)5(CO3)2(OH)6 and often forms as radiating acicular blue-green crystals and linings along cavity walls.