sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5 to 7 on the Mohs scale, earthy to waxy luster, opaque, and displays banded or mottled patterns in brown, red, and yellow colors with conchoidal fracture.
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Physical properties
Hardness of 6.5 to 7 on the Mohs scale, earthy to waxy luster, opaque, and displays banded or mottled patterns in brown, red, and yellow colors with conchoidal fracture.
Formation & geological history
Formed through the silification of sedimentary or volcanic rocks where silica-rich fluids precipitate in cavities or fractures.
Uses & applications
Widely used for ornamental carvings, polished cabochons, jewelry making, and lapidary collections.
Geological facts
Jasper has been utilized since ancient times for talismans, seals, and weaponry components like arrowheads due to its durability.
Field identification & locations
Identify in the field by its hardness, opacity, waxy luster, and distinctive earthy color banding; commonly found in riverbeds and mountainous regions worldwide.
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Sandstone or Siltstone
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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