mineral
Blue-green mineral fragment, possibly turquoise
Unidentified copper-bearing mineral; turquoise is CuAl₆(PO₄)₄(OH)₈·4H₂O
AI-generated identification · may be incorrectSmall rough, pale blue-green fragment with a dull to slightly glassy surface. Hardness and crystal structure cannot be reliably determined from the image; turquoise is typically Mohs 5–6 and microcrystalline.
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Physical properties
Small rough, pale blue-green fragment with a dull to slightly glassy surface. Hardness and crystal structure cannot be reliably determined from the image; turquoise is typically Mohs 5–6 and microcrystalline.
Formation & geological history
If turquoise, it formed through near-surface alteration of copper-rich rocks in arid environments; deposits commonly formed over geological time in the Cenozoic and earlier.
Uses & applications
Turquoise is used in jewelry and ornament, while other blue-green copper minerals may be collected or used as copper ore.
Geological facts
The fragment is too small and visually ambiguous for a confident mineral identification; color alone is not diagnostic.
Field identification & locations
Compare hardness, streak, and texture, and inspect for matrix or characteristic veining; identification may require testing or laboratory analysis. Turquoise occurs notably in the southwestern United States, Iran, and China.
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