sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness 6.5-7 on the Mohs scale, opaque brown color, waxy luster, and microcrystalline structure without visible cleavage.
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Physical properties
Hardness 6.5-7 on the Mohs scale, opaque brown color, waxy luster, and microcrystalline structure without visible cleavage.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks where silica-rich fluids replace host rock minerals over geological time.
Uses & applications
Used primarily for ornamental carvings, polished cabochons in jewelry, and decorative landscaping stones.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry components across various civilizations.
Field identification & locations
Identify by its opaque brown or earthy coloration, conchoidal fracture, and high hardness that scratches glass. Commonly found in riverbeds and silicate-rich geological formations.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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