mineral
Amazonite
Microcline (K(AlSi3O8))
Hardness: 6-6.5; Color: turquoise-green to blue-green; Luster: Vitreous; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 2.56-2.58.
- Hardness
- 6-6
- Color
- turquoise-green to blue-green
- Luster
- Vitreous
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Physical properties
Hardness: 6-6.5; Color: turquoise-green to blue-green; Luster: Vitreous; Crystal structure: Triclinic; Cleavage: Perfect; Specific gravity: 2.56-2.58.
Formation & geological history
Formed in granitic pegmatites and metamorphic rocks through hydrothermal processes, often alongside smoky quartz or albite.
Uses & applications
Primarily used as a gemstone in jewelry, for ornamental carvings, and as a popular specimen for mineral collectors.
Geological facts
Named after the Amazon River, though it is not actually found there. The green-blue color is attributed to small traces of lead and water within the feldspar structure.
Field identification & locations
Identify by its distinct greenish-blue hue and the presence of white streaks or 'schiller' caused by albite exsolution lamellae. Found in USA (Colorado), Brazil, and Russia.
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Mineral/Rock
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