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Smithsonian National Museum of Natural History

Azurite with malachite

Photograph of azurite (143379) from the National Mineral Collection
Photo by Chip Clark. Click to zoom.
Catalog Number NMNH 143379-00
Locality Copper Queen Mine, Arizona, United States

Azurite (blue) and malachite (green) are hydrated copper carbonates and mined as ores of copper, frequently found together. Because of their brilliant colors, they are used as pigments and ornamental stones. Azurite is typically massive to nodular in nature but can also form as stalactites and small dark blue tabular or prismatic crystals. Its intense azure blue color makes it a popular stone for collectors.


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