igneous
Likely amazonite-bearing pegmatite
Amazonite (green microcline feldspar, KAlSi₃O₈) with quartz and possibly mica
AI-generated identification · may be incorrectBlue-green feldspar with a vitreous to pearly luster, irregular cleavage, and visible cavities or weathered patches. Microcline is triclinic and has Mohs hardness 6–6.5; exact composition cannot be confirmed from the image alone.
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Physical properties
Blue-green feldspar with a vitreous to pearly luster, irregular cleavage, and visible cavities or weathered patches. Microcline is triclinic and has Mohs hardness 6–6.5; exact composition cannot be confirmed from the image alone.
Formation & geological history
Amazonite typically crystallizes in silica-rich granitic pegmatites as magma cools slowly; such pegmatites occur in rocks of many geological ages.
Uses & applications
Attractive amazonite is used for beads, cabochons, and ornamental objects; rough pieces are commonly collected as mineral specimens.
Geological facts
Amazonite is a variety of microcline, not a separate mineral species; its distinctive color comes from trace impurities and structural effects.
Field identification & locations
Look for blue-green feldspar with blocky cleavage, often associated with quartz and mica in pegmatites. The pictured specimen’s identification is tentative from appearance alone.
