sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, white to translucent color, vitreous luster, hexagonal crystal system when unweathered, conchoidal fracture.
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Physical properties
Hardness of 7 on Mohs scale, white to translucent color, vitreous luster, hexagonal crystal system when unweathered, conchoidal fracture.
Formation & geological history
Formed through the mechanical weathering and water transportation of larger quartz veins or igneous rocks, rounded over long periods in river or beach environments.
Uses & applications
Used in landscaping, decorative gravel, abrasive manufacturing, and glass production.
Geological facts
Quartz is one of the most abundant and durable minerals on Earth's continental crust, highly resistant to chemical weathering.
Field identification & locations
Easily identified by its high hardness (scratches glass) and lack of cleavage; commonly found in riverbeds, beaches, and conglomerate rock formations.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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