MALACHITE, GOETHITE, CALCITE Mount Coffin, Flinders Ranges, South Australia (miniature)

Malachite is a stunning copper carbonate hydroxide mineral, chemically defined as Cu2CO3(OH)2. This opaque green mineral features iconic banding and a monoclinic crystal system.

It typically forms in botryoidal, fibrous, or stalagmitic shapes within fractured subterranean environments. Hydrothermal fluids and the water table facilitate its distinct chemical precipitation.

While individual crystals are uncommon, they can appear as slender, acicular prisms, like this beautiful miniature. Some specimens even showcase unique pseudomorphs that resemble tabular or blocky azurite crystal structures.