sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, exhibits vibrant red and brown colors with a waxy luster, and breaks with a distinct conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, exhibits vibrant red and brown colors with a waxy luster, and breaks with a distinct conchoidal fracture.
Formation & geological history
Formed via the precipitation of silica-rich fluids in sedimentary environments or volcanic ash beds, often dating back hundreds of millions of years.
Uses & applications
Widely used for ornamental carvings, cabochons, jewelry making, and valued as a collector specimen.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry like arrowheads due to its durable and fracture-resistant nature.
Field identification & locations
Identify in the field by its opaque appearance, smooth conchoidal breakage, and high hardness that scratches glass. Common globally, especially in regions with ancient volcanic activity.
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