mineral
Amazonite
Microcline (KAlSi3O8) with lead impurities
Hardness: 6-6.5 (Mohs scale), Color: Teal to sea-foam green with white streaks, Luster: Vitreous to pearly, Crystal Structure: Triclinic, Cleavage: Perfect in two directions.
- Hardness
- 6-6
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Physical properties
Hardness: 6-6.5 (Mohs scale), Color: Teal to sea-foam green with white streaks, Luster: Vitreous to pearly, Crystal Structure: Triclinic, Cleavage: Perfect in two directions.
Formation & geological history
Formed primarily in pegmatites, which are igneous rocks that form during the final stages of a magma's crystallization. The green color is caused by the presence of small amounts of lead and water within the feldspar structure.
Uses & applications
Used extensively as a gemstone for jewelry, cabochons, beads, and ornamental carvings. It is also a popular specimen for mineral collectors.
Geological facts
Amazonite is named after the Amazon River, although ironically, it has not actually been found there. It is sometimes called 'Amazon Stone.' It was used by ancient Egyptians for jewelry and amulets.
Field identification & locations
Identify by its distinct blue-green color and 'perthitic' texture (white wavy streaks). It is commonly found in Pike's Peak, Colorado, as well as Brazil, Russia, and Madagascar.
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Mineral
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Mineral/Rock
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