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 through the silification of sedimentary or volcanic rocks, where silica-rich fluids precipitate quartz in pore spaces.
Uses & applications
Commonly used for ornamental carvings, polished cabochons in jewelry, and decorative landscaping stones.
Geological facts
Jasper has been used since ancient times for amulets, seals, and tools, highly valued by ancient Mesopotamians, Egyptians, and Greeks.
Field identification & locations
Easily identified by its opaque nature, smooth waxy luster when polished, and multicolored patterns; found worldwide in riverbeds and ancient mineral deposits.
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Sandstone or Siltstone
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Shale (or Mudstone/Siltstone)
Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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