sedimentary
Leopard Jasper
Microcrystalline Quartz (Chalcedony)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, vitreous luster, cryptocrystalline structure, with distinct spots or rosettes resembling leopard fur in tan, brown, and black.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, vitreous luster, cryptocrystalline structure, with distinct spots or rosettes resembling leopard fur in tan, brown, and black.
Formation & geological history
Formed through the deposition of silica-rich fluids in volcanic cavities or fractures, often over millions of years during sedimentary and hydrothermal processes.
Uses & applications
Primarily used for ornamental carvings, tumbled stones, cabochons in jewelry, and decorative display specimens.
Geological facts
The distinctive spots are caused by mineral inclusions of iron and manganese oxides diffusing through the silica gel during formation.
Field identification & locations
Easily identified by its characteristic spotted or patterned appearance and conchoidal fracture. Commonly found in Mexico, Brazil, and parts of Africa.
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