Malachite Stone
Malachite is a copper carbonate hydroxide mineral, with the formula
Cu2CO3(OH)2. This green-colored mineral crystallizes 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. Individual crystals are rare but do occur as slender to
acicular prisms.
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