Most common habit is as large crusts of microscopic crystals.
Also occurs as bundles of thin long splinters. Large individual crystals are very rare and are usually pseudomorphs after Azurite . Also occurs acicular , radiating , reniform , botryoidal , as banded masses, earthy , stalactitic , and as thin films coating other minerals. Not usually discernible because crystals are tiny. All About Malachite is a secondary copper mineral found in oxidized copper deposits.