What is Malachite?
Malachite is a natural design object: silky fibres and concentric bands turn oxidation-zone chemistry into a surface people can read at a glance. The best pieces preserve both the decorative pattern and the copper-mineral context.
Mineralogy and crystal structure
Reference formula: Cu2CO3(OH)2. Malachite is a monoclinic copper carbonate hydroxide and a classic secondary copper mineral. Concentric banding records repeated growth and changes in fluid chemistry; it commonly occurs with azurite, chrysocolla and cuprite. Malachite is classified with carbonates and has a monoclinic crystal system. Typical hardness is 3.5–4 on the Mohs scale and specific gravity is approximately 3.6–4.0.
Colour, lustre and habit
Typical colours include bright green, banded green, dark green. The usual botryoidal, fibrous, stalactitic habit and silky, vitreous, dull lustre help describe a specimen, but colour alone is not diagnostic.
Formation and notable localities
Malachite forms in or is associated with oxidised copper deposits, mine workings, carbonate rocks and near-surface groundwater systems. Important documented localities include the Democratic Republic of the Congo, Zambia, Russia, Australia, the United States and Namibia.
Green banding that makes copper geology visible
Malachite is a natural design object: silky fibres and concentric bands turn oxidation-zone chemistry into a surface people can read at a glance. The best pieces preserve both the decorative pattern and the copper-mineral context.
Collecting and care
Soft and copper-bearing: avoid acids, abrasion and dust, do not use in water or food contact, and wash hands after handling.
