sedimentary
Jasper
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and displays varied earthy colors like red, brown, yellow, or green.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, opaque luster, microcrystalline quartz structure, and displays varied earthy colors like red, brown, yellow, or green.
Formation & geological history
Formed through the silification of sedimentary or volcanic deposits, often precipitated from silica-rich hydrothermal fluids or groundwater.
Uses & applications
Used primarily in ornamental carvings, jewelry, cabochons, and as a popular collectible lapidary material.
Geological facts
Jasper has been used since ancient times for seals, talismans, and decorative items due to its durability and rich color patterns.
Field identification & locations
Identified in the field by its conchoidal fracture, waxy luster, lack of cleavage, and resistance to scratching by steel. Commonly found in riverbeds and mountainous regions worldwide.
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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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