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AMAZONITE
Amazonite is found in the United States, Australia, Brazil, Russia, Namibia, Zimbabwe. Amazonite is usually light green to blue-green, mottled and sometimes contains light striations. A semiopaque stone that was used extensively by the Egyptians, the name Amazonite comes from the mistaken belief that it was found in the Amazon river.
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Amazonite Chemical Composition: KAlSi3O8 | |
Class: tektosilicate | |
Crystal system: triclinic; bar 1 | |
Crystal habit: as anhedral to euhedral crystals or massive, lattice (perthitic) intergrowth with albite is usually present, also rarely in a cuneform interpenetrating pattern with quartz known as graphic granite | |
Specific gravity: 2.56-2.57 | |
Index of refraction: 1.53 | |
Hardness: 6 to 6.5 | |
Color: various shades of green to blue-green | |
Luster: vitreous | |
Transparency: opaque to translucent, rarely transparent | |
Fracture: conchoidal |
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