mineral
Jasper
Silicon dioxide (Microcrystalline quartz, SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, dull to greasy luster, opaque, and comes in various earthy colors like brown, red, and yellow with a conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, dull to greasy luster, opaque, and comes in various earthy colors like brown, red, and yellow with a conchoidal fracture.
Formation & geological history
Forms through the silica-rich precipitation in marine sediments or volcanic ash, often associated with hydrothermal activity and ancient depositional environments.
Uses & applications
Used extensively for ornamental carvings, polished cabochons in jewelry, and as a popular specimen for mineral collectors.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness and ability to take a high polish.
Field identification & locations
Identified in the field by its opacity, waxy luster, and lack of cleavage, commonly found in hydrothermal veins and sedimentary rock beds worldwide.
