mineral
Amazonite
Microcline Feldspar (KAlSi3O8)
AI-generated identification · may be incorrectMohs hardness of 6-6.5, blue-green to green color, vitreous luster, triclinic crystal structure, perfect cleavage in two directions, specific gravity around 2.56-2.58. Often displays a mottled or whitish grid-like pattern due to exsolution.
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Physical properties
Mohs hardness of 6-6.5, blue-green to green color, vitreous luster, triclinic crystal structure, perfect cleavage in two directions, specific gravity around 2.56-2.58. Often displays a mottled or whitish grid-like pattern due to exsolution.
Formation & geological history
Forms in granitic pegmatites and some metamorphic rocks. The green color is often attributed to trace amounts of lead and water.
Uses & applications
Used primarily as a gemstone, carved into cabochons, beads, and ornamental objects. Popular among mineral collectors.
Geological facts
Named after the Amazon River, although no deposits have been found there. It was used in ancient Egypt for jewelry and amulets.
Field identification & locations
Identified by its distinctive blue-green color, hardness, and often a grid-like or mottled appearance. Commonly found in Colorado (USA), Russia, Madagascar, and Brazil. Field identification can be confirmed by its cleavage and color.
