mineral
Amazonite
Microcline feldspar (KAlSi3O8)
AI-generated identification · may be incorrectHardness of 6 on the Mohs scale, vibrant turquoise-green color, vitreous luster, triclinic crystal system, and distinct grid-like twinning.
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Physical properties
Hardness of 6 on the Mohs scale, vibrant turquoise-green color, vitreous luster, triclinic crystal system, and distinct grid-like twinning.
Formation & geological history
Forms in pegmatites and granitic rocks from the slow cooling of magma rich in potassium, aluminum, and trace lead.
Uses & applications
Used primarily as a semi-precious gemstone in jewelry, for decorative carvings, and as a collector mineral specimen.
Geological facts
Despite its name, no deposits are found in the Amazon River basin; the color is caused by trace amounts of lead and water in the feldspar structure.
Field identification & locations
Identified by its characteristic bright blue-green color and grid pattern of white albite streaks; found globally including in the USA, Russia, and Brazil.
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Other mineral specimens
Gneiss or Schist
Gneiss or Mica Schist with Garnet
Metamorphic
Sandstone (with potential mineral staining/concretions)
Arenite (SiO2 based)
sedimentary
Tumbled granite
Granite, a coarse-grained felsic intrusive igneous rock
igneous
Pegmatite with Tourmaline and Quartz
Igneous Pegmatite
igneous
Epidote
Epidote | Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH)
metamorphic
Granite
Granite (Phaneritic intrusive igneous rock)
igneous