sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale. Colors range from brown, red, yellow, to green, with a dull to vitreous luster and conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale. Colors range from brown, red, yellow, to green, with a dull to vitreous luster and conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, where silica-rich fluids precipitate microcrystalline quartz in spaces or fractures.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and as a decorative stone.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry like arrowheads due to its toughness.
Field identification & locations
Identified by its opaque appearance, hardness that scratches glass, and smooth conchoidal fracture. Found worldwide in riverbeds and mountainous regions.
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Sandstone or Siltstone
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Sandstone
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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