sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of yellow, brown, and red, and a trigonal crystal system with no cleavage.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth tones of yellow, brown, and red, and a trigonal crystal system with no cleavage.
Formation & geological history
Formed through the precipitation of silica-rich fluids in sedimentary environments or volcanic ash deposits over millions of years.
Uses & applications
Used extensively in ornamental carvings, cabochons, jewelry, and as a popular specimen for mineral collectors.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components by various ancient civilizations.
Field identification & locations
Identify in the field by its waxy luster, conchoidal fracture, and opacity. Commonly found in riverbeds, hydrothermal veins, and sedimentary rock formations globally.
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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