sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, red to brown color with opaque luster and a conchoidal fracture, lacking visible crystal structure to the naked eye.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, red to brown color with opaque luster and a conchoidal fracture, lacking visible crystal structure to the naked eye.
Formation & geological history
Formed through the precipitation of silica-rich fluids in sedimentary environments or hydrothermal veins, often originating from ancient marine deposits.
Uses & applications
Commonly used in lapidary arts, ornamental carvings, jewelry, and prized by mineral collectors.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components due to its toughness and ability to take a high polish.
Field identification & locations
Easily identified in the field by its waxy luster, opaque appearance, hardness that scratches glass, and vibrant earthy tones.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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