sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, typically white, clear, or greyish in color, 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 greyish in color, vitreous luster, conchoidal fracture, specific gravity of 2.65
Formation & geological history
Formed through weathering and water transport of quartz veins or intrusive igneous rocks, often deposited in riverbeds and beaches over millions of years
Uses & applications
Commonly used in landscaping, road construction, decorative gravel, and lapidary practice
Geological facts
Quartz is one of the most abundant minerals in Earth's continental crust and is exceptionally resistant to both chemical and mechanical weathering
Field identification & locations
Can be identified in the field by its high hardness (scratches glass), lack of cleavage, and smooth, water-worn shape. Found worldwide in stream beds, gravel bars, and sedimentary deposits
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Quartz pebble
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