sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, vitreous to greasy luster, conchoidal fracture, and resistant to weathering.
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Physical properties
Hardness of 7 on the Mohs scale, vitreous to greasy luster, conchoidal fracture, and resistant to weathering.
Formation & geological history
Formed by the mechanical weathering and water transport of larger quartz-bearing rocks, commonly found in riverbeds and beaches.
Uses & applications
Used in landscaping, aggregate for construction, and glass manufacturing.
Geological facts
Quartz is one of the most abundant and durable minerals on Earth's continental crust.
Field identification & locations
Identified by its high hardness, lack of cleavage, and resistance to acid; ubiquitous in alluvial deposits worldwide.
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Sedimentary limestone with invertebrate fossil imprint
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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