sedimentary
Quartz pebble
Silicon dioxide (SiO2)
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, typically white or translucent, vitreous luster, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through the weathering and erosion of parent rocks containing quartz, followed by transport via water or wind which rounds the edges, resulting in a pebble.
Uses & applications
Used in landscaping, decorative aggregates, and as an indicator mineral in sedimentary geology.
Geological facts
Quartz is one of the most abundant minerals in the Earth's continental crust and is exceptionally resistant to weathering.
Field identification & locations
Found worldwide in riverbeds, beaches, and sedimentary deposits; identified by its high hardness and lack of cleavage.
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