sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
AI-generated identification · may be incorrectMohs hardness of 7, colorless or white to yellowish-brown, vitreous luster, trigonal crystal system, conchoidal fracture with no cleavage.
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Physical properties
Mohs hardness of 7, colorless or white to yellowish-brown, vitreous luster, trigonal crystal system, conchoidal fracture with no cleavage.
Formation & geological history
Formed through the mechanical weathering and prolonged aqueous transport of larger quartz-bearing rocks, smoothing sharp edges over millions of years.
Uses & applications
Used in landscaping, decorative gravel, aggregate in construction, and as raw material for silicon and glass manufacturing.
Geological facts
Quartz is one of the most abundant and durable minerals on Earth's surface, highly resistant to both chemical and mechanical weathering.
Field identification & locations
Identified by its high hardness (scratches glass), lack of cleavage, and smooth rounded shape found commonly in riverbeds and beaches.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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