sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors due to iron impurities, and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors due to iron impurities, and conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, where silica-rich fluids replace original material in ancient depositional environments.
Uses & applications
Used primarily for ornamental carvings, cabochons, lapidary art, and as a collector's mineral specimen.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness and fracture properties.
Field identification & locations
Identify by its opacity, waxy luster, and lack of crystal cleavage; commonly found worldwide in riverbeds, hydrothermal veins, and ancient sedimentary formations.
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