sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, typically white, grey, or pinkish in color, vitreous luster, conchoidal fracture, and no true cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, typically white, grey, or pinkish in color, vitreous luster, conchoidal fracture, and no true cleavage.
Formation & geological history
Formed through mechanical weathering and water transportation of larger quartz-bearing rocks, commonly found in riverbeds, beaches, and alluvial deposits over geological timescales.
Uses & applications
Used in landscaping, decorative purposes, and as raw material for aggregate in construction.
Geological facts
Quartz is one of the most abundant and durable minerals on Earth's continental crust, surviving weathering processes that destroy other minerals.
Field identification & locations
Easily identified by its high hardness (scratches glass) and smooth, rounded shape resulting from water erosion. Found worldwide.
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