mineral
Amazonite
Microcline (KAlSi3O8) with Trace Lead
Hardness: 6-6.5 on Mohs scale; Color: Turqouise-green to pale green with white streaks; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions.
- Hardness
- 6-6
- Color
- Turqouise-green to pale green with white streaks
- Luster
- Vitreous to pearly
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Physical properties
Hardness: 6-6.5 on Mohs scale; Color: Turqouise-green to pale green with white streaks; Luster: Vitreous to pearly; Crystal structure: Triclinic; Cleavage: Perfect in two directions.
Formation & geological history
Formed primarily in granitic pegmatites or hydrothermal veins where hot fluid deposits minerals. The green color is often attributed to the presence of lead and water within the feldspar lattice.
Uses & applications
Used extensively in jewelry as beads or cabochons, and as a popular lucky stone or decorative specimen for collectors.
Geological facts
Named after the Amazon River, although ironically, it is not actually found in that specific river basin. It was historically called 'Amazon Stone'.
Field identification & locations
Identified by its distinctive bluish-green color and 'perthitic' texture (fine white streaks). Commonly found in Russia, Brazil, Ethiopia, and Colorado (Pikes Peak).
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Banded Gneiss (River Rock/Pebble)
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Green Apatite on Albite
Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]
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Epidote
Epidote - Ca2(Al2,Fe3+)3(SiO4)3(OH)
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