mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
Hardness: 6-6.5 Mohs. Color: Turquoise green to blue-green. Luster: Vitreous to pearly. Crystal Structure: Triclinic. Cleavage: Perfect in two directions. Specific Gravity: 2.56-2.58.
- Hardness
- 6-6
- Color
- Turquoise green to blue-green
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 6-6.5 Mohs. Color: Turquoise green to blue-green. Luster: Vitreous to pearly. Crystal Structure: Triclinic. Cleavage: Perfect in two directions. Specific Gravity: 2.56-2.58.
Formation & geological history
Forms primarily in granitic pegmatites and hydrothermal veins. Its distinct color is attributed to the presence of small amounts of lead and water within the feldspar lattice.
Uses & applications
Primarily used as a gemstone for jewelry, beads, and cabochons. It is also a popular collector's mineral and often used in metaphysical practices.
Geological facts
Named after the Amazon River, though it is not actually found there; it was likely confused with other green minerals from the region. It is often found associated with smoky quartz.
Field identification & locations
Identified by its distinctive blue-green color and the presence of white streaks or 'schiller' effect. Common locations include Russia, Madagascar, Brazil, and Colorado, USA.
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sedimentary
Potassium Feldspar (Orthoclase)
Orthoclase (KAlSi3O8)
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Mineral
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Mineral/Rock