sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors due to mineral impurities, conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, various earth-tone colors due to mineral impurities, conchoidal fracture.
Formation & geological history
Formed from silica-rich solutions precipitating in sedimentary environments or hydrothermal veins over millions of years.
Uses & applications
Used primarily in ornamental carvings, cabochons, jewelry, and as a popular specimen for rock collectors.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components across diverse global civilizations.
Field identification & locations
Identified by its opaque nature, waxy luster, and colorful banding or patterning; found worldwide in riverbeds and mountainous regions.
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Sedimentary limestone with invertebrate fossil imprint
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Sandstone or Siltstone
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Sandstone
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Shale
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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