sedimentary
Quartz pebble
Silicon dioxide (SiO2)
AI-generated identification · may be incorrectHardness: 7 on the Mohs scale. Color: Generally whitish, yellowish, or translucent. Luster: Vitreous to dull when weathered. Crystal structure: Trigonal. Cleavage: None.
- Hardness
- 7 on the Mohs scale
- Color
- Generally whitish, yellowish, or translucent
- Luster
- Vitreous to dull when weathered
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Physical properties
Hardness: 7 on the Mohs scale. Color: Generally whitish, yellowish, or translucent. Luster: Vitreous to dull when weathered. Crystal structure: Trigonal. Cleavage: None.
Formation & geological history
Formed through the mechanical weathering and erosion of quartz-bearing rocks, followed by transport and rounding in aquatic or aeolian environments over geological timescales.
Uses & applications
Commonly used in landscaping, aggregate for construction, and educational purposes.
Geological facts
Quartz is one of the most abundant and durable minerals in the Earth's continental crust, making its pebbles extremely common in riverbeds and beaches worldwide.
Field identification & locations
Easily identified by its high hardness (scratches glass) and resistance to chemical weathering, frequently found in stream gravels and sedimentary deposits.
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