sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness of 7 on the Mohs scale, yellowish-tan color, vitreous to greasy luster, conchoidal fracture with no cleavage.
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Physical properties
Hardness of 7 on the Mohs scale, yellowish-tan color, vitreous to greasy luster, conchoidal fracture with no cleavage.
Formation & geological history
Formed through the mechanical weathering and water transportation of parent quartz-bearing rocks in rivers or marine environments over millions of years.
Uses & applications
Used primarily as decorative landscaping gravel, in construction aggregates, or collected as an ordinary beach or river pebble.
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
Easily identified by its high hardness which scratches glass and its smooth, water-worn shape found abundantly in riverbeds and beaches.
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Sedimentary Mudrock (SiO2, Al2O3 base with clay minerals)
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