mineral
Turquoise
CuAl6(PO4)4(OH)8·4H2O
AI-generated identification · may be incorrectMohs hardness 5-6, robin's egg blue to greenish-blue color, waxy to sub-vitreous luster, triclinic crystal system.
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Physical properties
Mohs hardness 5-6, robin's egg blue to greenish-blue color, waxy to sub-vitreous luster, triclinic crystal system.
Formation & geological history
Forms by the action of meteoric waters percolating through copper-bearing aluminum-rich rocks in arid climates.
Uses & applications
Extensively used in jewelry, bead making, and ornamental carvings.
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 distinct blue color and unique matrix webbing; found in major deposits in the southwestern USA, Iran, and China.
