sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, grayish-white color, vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, grayish-white color, vitreous luster, trigonal crystal system, conchoidal fracture with no true cleavage, specific gravity of 2.65.
Formation & geological history
Formed through the mechanical weathering and fluvial erosion of quartz-bearing parent rocks, subsequently rounded by water transport over long distances.
Uses & applications
Used in landscaping, decorative ground cover, and aggregate for construction. Common specimens hold negligible commercial value.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Found worldwide in riverbeds, beaches, and alluvial deposits. Easily identified by its high hardness, which allows it to scratch glass.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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