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. This Azurite & Malachite mineral specimen is from the Jiangxi Province, near Dexing China. The azurite crystals on this specimen are darker, brighter and sharper than what the picture shows. This is a very nice specimen.