sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically colorless or white to brown, vitreous luster, conchoidal fracture, and specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically colorless or white to brown, vitreous luster, conchoidal fracture, and specific gravity of 2.65.
Formation & geological history
Formed through the mechanical weathering and prolonged aqueous transportation of parent igneous or metamorphic rocks, smoothing rough edges over millions of years.
Uses & applications
Used in landscaping, decorative aggregates, abrasives, and as raw material for glass manufacturing.
Geological facts
Quartz is the second most abundant mineral in Earth's continental crust and is exceptionally resistant to chemical weathering.
Field identification & locations
Identified by its high hardness, inability to be scratched by steel, and rounded river-worn shape; commonly found in stream beds and beaches worldwide.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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