sedimentary
Jasper
Silicon dioxide with impurities (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and specific gravity around 2.65 to 2.66.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and specific gravity around 2.65 to 2.66.
Formation & geological history
Formed through the precipitation of silica from aqueous solutions in sedimentary environments or hydrothermal veins, often dating from the Precambrian.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and as a popular specimen for mineral collectors.
Geological facts
Jasper has been utilized by ancient civilizations since the 4th millennium BC for seals, drills, and primitive tools due to its toughness.
Field identification & locations
Identified by its conchoidal fracture, lack of cleavage, and vibrant opaque colors; commonly found globally in hydrothermal veins and riverbeds.
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