sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on Mohs scale, vitreous luster, colorless to brownish due to staining, conchoidal fracture, and trigonal crystal system.
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Physical properties
Hardness of 7 on Mohs scale, vitreous luster, colorless to brownish due to staining, conchoidal fracture, and trigonal crystal system.
Formation & geological history
Formed through the physical weathering and aqueous transport of primary quartz veins or pegmatites, accumulating in sedimentary stream or beach environments.
Uses & applications
Commonly used in landscaping, aggregate, and glass manufacturing.
Geological facts
Quartz is one of the most abundant and durable minerals in Earth's continental crust, highly resistant to chemical weathering.
Field identification & locations
Identified by its high hardness (scratches glass) and lack of cleavage; found globally in rivers, beaches, and conglomerate rocks.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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