sedimentary
Jasper
Microcrystalline Quartz (SiO2)
AI-generated identification · may be incorrectHardness of 6.5-7 on the Mohs scale, opaque 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 brown color, waxy to vitreous luster, and conchoidal fracture.
Formation & geological history
Formed from silica-rich solutions precipitating in sedimentary environments or volcanic rocks over millions of years.
Uses & applications
Commonly used for ornamental carvings, cabochons, and gemstone jewelry.
Geological facts
Jasper has been used since ancient times for talismans, seals, and weaponry components due to its toughness.
Field identification & locations
Identified by its rich opaque colors and lack of cleavage; found globally in riverbeds and mountainous regions.
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Fossiliferous Sedimentary Rock
Sedimentary limestone with invertebrate fossil imprint
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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