sedimentary
Jasper
Silicon dioxide (Microcrystalline quartz, SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, typically dark brown or opaque, waxy luster, conchoidal fracture, and no cleavage.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, typically dark brown or opaque, waxy luster, conchoidal fracture, and no cleavage.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often precipitating from silica-rich hydrothermal fluids or silica-rich oozes.
Uses & applications
Used widely in ornamental carvings, cabochons, jewelry, and polished decorative display pieces.
Geological facts
Jasper has been utilized by ancient civilizations for thousands of years to create tools, seals, and talismans due to its durability and rich colors.
Field identification & locations
Easily identified by its hard, smooth, conchoidal surfaces and lack of cleavage; common in riverbeds and pebble beaches worldwide.
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