sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, white to clear color, vitreous luster, conchoidal fracture, and specific gravity around 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, white to clear color, vitreous luster, conchoidal fracture, and specific gravity around 2.65.
Formation & geological history
Formed through the accumulation and weathering of silicate-rich parent rocks, subsequently transported and rounded by water action in streams or beaches.
Uses & applications
Used in landscaping, decorative aggregates, abrasives, and as a raw material for glassmaking and electronics.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, surviving weathering processes that destroy other minerals.
Field identification & locations
Identified by its high hardness, inability to be scratched by steel, and smooth water-worn shape; commonly found in riverbeds and coastal beaches.
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