Azurite Crystals with Malachite from Mexico

Malachite and Azurite are both simple Copper carbonates. Azurite occurs as a secondary mineral in the oxidized zones of copper deposits. Where as Malachite occurs as an alteration product in the oxidized zones of copper deposits. They are chemical twins. The only differences is that Azurite holds less water than Malachite. Azurite and Malachite are often mixed together and make great looking Specimens. As far as azurite crystals go these are fairly large, translucent, well formed specimens. This specimen is from the Milpillas Mine Senora Mexico.