sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque luster, various earthy colors, trigonal crystal system, and conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque luster, various earthy colors, trigonal crystal system, and conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often occurring in ancient marine environments or hydrothermal veins.
Uses & applications
Used widely in ornamental carvings, cabochons, jewelry, and polished collector specimens.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry components like arrowheads due to its toughness.
Field identification & locations
Identify in the field by its dense opacity, lack of cleavage, waxy luster, and wide range of opaque red, brown, or yellow color banding.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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