sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque reddish-brown color, waxy to vitreous luster, and conchoidal fracture.
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Physical properties
Hardness of 6.5-7 on the Mohs scale, opaque reddish-brown color, waxy to vitreous luster, and conchoidal fracture.
Formation & geological history
Forms from the precipitation of silica-rich fluids in sedimentary or hydrothermal environments, often colored by iron oxides.
Uses & applications
Commonly used in cabochons, carved ornaments, decorative items, and lapidary art.
Geological facts
Ancient civilizations prized red jasper for amulets and seals, believing it possessed grounding and protective properties.
Field identification & locations
Identified by its rich red or brownish opaque appearance, waxy luster, and lack of cleavage; found globally in various rock formations.
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Sandstone or Siltstone
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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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