Azurite
Azurite is a soft blue copper carbonate mineral. The mineral is known for its color - a distinctive royal blue. It is formed by the weathering of and is one of the only two basic copper carbonates. Azurite has the formula Cu3(CO3)2(OH)2, and its copper cations are attached to carbonate and hydroxide anions. Azurite has been prized as a gemstone since Ancient times.
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Properties
Mineral Class
Carbonates
3.5 - 4
Orthorhombic
Luster
Vitreous
Chemical Formula
Cu3(CO3)2(OH)2
Streak
Light Blue
Uses & Applications
Azurite has been used for centuries in various applications. These have included the use as an ornamental stone, a source of paint pigment, and collectible mineral.
Associated Minerals
Azurite is commonly associated with other copper minerals and carbonates, such as:
Atacamite
Brochantite
Copper
Notable Localities
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Varieties
Rubellite
Additional Resources
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