sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, typically white, clear, or yellowish due to iron staining, vitreous luster, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white, clear, or yellowish due to iron staining, vitreous luster, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through the weathering and prolonged water-transport of quartz-rich parent rocks, accumulating in riverbeds or beaches over millions of years.
Uses & applications
Used in landscaping, decorative stone, abrasive manufacturing, and as a raw material for glass production.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's continental crust, highly resistant to both chemical and physical weathering.
Field identification & locations
Commonly found in stream beds, beaches, and glacial till. Can be identified by its high hardness (scratches glass) and lack of cleavage.
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