mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
Hardness: 6-6.5 (Mohs scale), Color: Teal to blue-green often with white streaks, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect, Specific gravity: 2.56-2.58
- Hardness
- 6-6
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Physical properties
Hardness: 6-6.5 (Mohs scale), Color: Teal to blue-green often with white streaks, Luster: Vitreous to pearly, Crystal structure: Triclinic, Cleavage: Perfect, Specific gravity: 2.56-2.58
Formation & geological history
Formed in granitic pegmatites and hydrothermal veins through slow cooling of magma. Its distinct color is caused by trace amounts of lead and water within the feldspar structure.
Uses & applications
Mainly used as a gemstone for jewelry, ornamental carvings, and a popular collector specimen.
Geological facts
Named after the Amazon River, although ironically it has not been found there. It is often called the 'Hope Stone' in metaphysical circles. Leading sources include Russia, Colorado (USA), and Madagascar.
Field identification & locations
Identify by its distinct blue-green color and 'Schiller effect' (pearly luster). Often found associated with smoky quartz or white feldspar in granite mines.
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Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
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