Malachite

Malachite is a copper carbonate hydroxide mineral. This opaque, green banded mineral crystallises in the monoclinic crystal system, and most often forms botryoidal, fibrous, or stalagmitic masses, in fractures and spaces, deep underground, where the water table and hydrothermal fluids provide the means for chemical precipitation.

Malachite comes from various worldwide places such as Democratic Republic of Congo, Gabon, Zambia, Namibia, Mexico, New South Wales, France, Israel and southwestern United States, most notably in Arizona.