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Aim: The aim of this investigation is to try and find out the percentage of copper carbonate in malachite. Research and my background knowledge about malachite and copper carbonate: Malachite is hydrous copper carbonate and is found in shades of green. Its hardness is about 3.5-4.0 and specific gravity is about 3.9-4.03. It is sometimes used as a valuable ornamental stone and is also a minor ore of copper. Malachite is a secondary copper mineral found in oxidised copper deposits. The massive, botryoidal, reniform, and stalactitic forms are dense intergrowths of tiny, fibrous needles. Such specimens are virtually always internally banded in different shades of green, and can be seen when a specimen is polished or cut open. These bands give much interest to this mineral as an ornament, owing to its popularity. Malachite is generally found with blue Azurite, and sometimes the two may occur admixed or banded together, forming what is commonly known...

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