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 from iron impurities, and a cryptocrystalline structure.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors from iron impurities, and a cryptocrystalline structure.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often precipitating from silica-rich fluids in marine or hydrothermal environments.
Uses & applications
Used extensively for ornamental carvings, cabochons, polished decorative stones, and gemstone jewelry collections.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry by civilizations worldwide.
Field identification & locations
Identify by its waxy luster, opaque nature, and distinct multicolored banding or patterns. Common in riverbeds and mountainous regions globally.
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Fossiliferous Sedimentary Rock
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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