sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through the weathering and prolonged erosion of quartz-bearing rocks, often transported and rounded in riverbeds or marine environments.
Uses & applications
Used in landscaping, construction aggregates, decorative gravel, and occasionally lapidary work.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, able to survive multiple cycles of weathering.
Field identification & locations
Found widely in gravel deposits, riverbeds, and beaches worldwide. Identified by its high hardness and lack of cleavage.
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Fossiliferous Concretion
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Quartz pebble
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