mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
AI-generated identification · may be incorrectMohs hardness of 5 to 6; distinct robin-egg blue to green color; waxy to sub-vitreous luster; triclinic crystal system.
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Physical properties
Mohs hardness of 5 to 6; distinct robin-egg blue to green color; waxy to sub-vitreous luster; triclinic crystal system.
Formation & geological history
Formed by the action of meteoric waters circulating through copper-bearing rocks in arid environments.
Uses & applications
Widely used in jewelry, ornamental carvings, and inlay work.
Geological facts
Turquoise is one of the oldest gemstones in history, prized by ancient civilizations like the Egyptians and Native Americans.
Field identification & locations
Identified by its unique blue-green color and dark webbing matrix, commonly found in the southwestern USA, Iran, and China.
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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