sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, typically opaque with a vitreous to dull luster. Displays a wide variety of colors due to iron and other mineral impurities.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, typically opaque with a vitreous to dull luster. Displays a wide variety of colors due to iron and other mineral impurities.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks, where silica-rich fluids replace original material over millions of years.
Uses & applications
Commonly used for ornamental objects, cabochons, carved figurines, and gemstone jewelry.
Geological facts
Jasper has been used since ancient times to create seals, talismans, and decorative items. Its rich colors and durability made it a favorite among early civilizations.
Field identification & locations
Found worldwide in association with hydrothermal veins and sedimentary deposits. Identify in the field by its conchoidal fracture, high hardness, and opaque, colorful appearance.
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Sandstone or Siltstone
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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