sedimentary
Jasper
Microcrystalline quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, waxy luster, opaque, and displays red, yellow, brown, or green colors due to iron oxide impurities with a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, waxy luster, opaque, and displays red, yellow, brown, or green colors due to iron oxide impurities with a conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks where silica-rich fluids precipitate microcrystalline quartz in cavities or fractures.
Uses & applications
Widely used in ornamental carvings, cabochons, jewelry, and polished decorative objects.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry tools like arrowheads due to its durability.
Field identification & locations
Identify by its opaque nature, smooth conchoidal breakage, and rich earthy colors; found worldwide in association with iron-rich formations.
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