mineral
Amazonite
Microcline Feldspar (KAlSi3O8)
Hardness of 6 on the Mohs scale; bright green to blue-green color often with white mottled streaks or grid-like patterns; vitreous to pearly luster; triclinic crystal system; specific gravity of 2.56-2.58.
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Physical properties
Hardness of 6 on the Mohs scale; bright green to blue-green color often with white mottled streaks or grid-like patterns; vitreous to pearly luster; triclinic crystal system; specific gravity of 2.56-2.58.
Formation & geological history
Forms in pegmatites, granitic rocks, and hydrothermal veins as magma cools slowly deep within the Earth's crust, allowing large crystals to grow.
Uses & applications
Used primarily in jewelry, ornamental carvings, decorative objects, and favored by mineral collectors.
Geological facts
The vibrant green-blue color of amazonite was historically attributed to copper, but modern research shows it is caused by small amounts of lead and water trapped within the feldspar structure.
Field identification & locations
Easily identified by its distinctive bright turquoise-green color combined with white perthitic striations. Found in notable quantities in Brazil, Colorado (USA), Russia, Madagascar, and Ethiopia.
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