sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, varies in color from white to brown, vitreous luster, trigonal crystal system, no cleavage, specific gravity around 2.65.
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Physical properties
Hardness of 7 on Mohs scale, varies in color from white to brown, vitreous luster, trigonal crystal system, no cleavage, specific gravity around 2.65.
Formation & geological history
Formed through prolonged water erosion and weathering of larger quartz-bearing rocks in rivers or coastal environments.
Uses & applications
Used in landscaping, decorative gravel, abrasive manufacture, and aggregate in construction.
Geological facts
Quartz is one of the most abundant minerals on Earth's continental crust and is exceptionally resistant to weathering.
Field identification & locations
Identified by its high hardness (scratches glass) and smooth, water-worn shape found in stream beds and beaches.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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