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 mineral impurities, and a 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 mineral impurities, and a conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, where silica-rich fluids precipitate quartz in pore spaces over millions of years.
Uses & applications
Commonly used for ornamental carvings, cabochons in jewelry, and decorative stone items.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness.
Field identification & locations
Identify it by its smooth waxy luster, lack of cleavage, and opaque, variegated earth-tone patterns; found worldwide in riverbeds and mountainous regions.
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