sedimentary
Jasper
Silicon dioxide (SiO2) microcrystalline quartz
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque luster, various earth-tone colors including red, brown, and yellow, with a conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque luster, various earth-tone colors including red, brown, and yellow, with a conchoidal fracture.
Formation & geological history
Formed through the accumulation of silica-rich sediments or the alteration of rich silica deposits during low-temperature hydrothermal activity or diagenesis.
Uses & applications
Used primarily for ornamental carvings, polished cabochons in jewelry, and as a popular specimen for mineral collectors.
Geological facts
Jasper has been used since ancient times to create seals, talismans, and decorative items due to its durability and rich color patterns.
Field identification & locations
Easily identified by its opaque nature, waxy luster, and lack of cleavage; commonly found in nodular masses within sedimentary and volcanic rocks worldwide.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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