sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
Hardness of 7 on the Mohs scale, white to translucent color, vitreous luster, conchoidal fracture, specific gravity of 2.65.
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Physical properties
Hardness of 7 on the Mohs scale, white to translucent color, vitreous luster, conchoidal fracture, specific gravity of 2.65.
Formation & geological history
Formed through the weathering and prolonged aqueous transportation of parent igneous or metamorphic rocks, rounding jagged quartz fragments into smooth pebbles in stream beds or coastal environments.
Uses & applications
Used in landscaping, construction aggregates, decorative gravel, and sometimes tumbling for ornamental crafts.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's crust, resistant to both physical and chemical weathering.
Field identification & locations
Commonly found in riverbeds, beaches, and conglomerate sedimentary rocks worldwide. Identified easily by its high hardness (scratches glass) and smooth, rounded water-worn shape.
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Quartz pebble
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