sedimentary
Quartz Pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, grayish-white color, vitreous luster, hexagonal crystal system when un-weathered, and conchoidal fracture with no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, grayish-white color, vitreous luster, hexagonal crystal system when un-weathered, and conchoidal fracture with no cleavage.
Formation & geological history
Formed through the mechanical weathering and water-transport erosion of larger quartz-bearing rocks, commonly found in riverbeds and beaches over various geological timescales.
Uses & applications
Used in landscaping, decorative paths, and as raw material for aggregate in construction.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's continental crust, surviving weathering processes that destroy other minerals.
Field identification & locations
Easily identified by its resistance to scratching by steel and smooth, water-worn shape. Commonly found globally in stream gravels and marine shorelines.
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Sandstone or Siltstone
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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