mineral
White quartz pebble
Quartz (SiO₂), likely massive milky quartz
AI-generated identification · may be incorrectOpaque white to cream with slight peach staining; dull to vitreous luster, no visible cleavage, uneven fracture, Mohs hardness 7, trigonal crystal structure. Rounded, water-worn surface.
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Physical properties
Opaque white to cream with slight peach staining; dull to vitreous luster, no visible cleavage, uneven fracture, Mohs hardness 7, trigonal crystal structure. Rounded, water-worn surface.
Formation & geological history
Quartz-rich material weathered from an igneous or metamorphic source and rounded by transport in a stream or along a shore. Quartz formed over a wide range of geological ages; this pebble’s age and source cannot be determined from the image.
Uses & applications
Commonly used as landscaping stone, aggregate, and decorative material; attractive pieces may be collected or polished.
Geological facts
Quartz is one of Earth’s most abundant minerals and resists chemical weathering, allowing it to persist in sediments.
Field identification & locations
Look for its glassy-to-waxy appearance, lack of cleavage, and ability to scratch ordinary glass; common in streambeds and beaches worldwide. The rounded shape suggests transport, though the exact locality is unknown.
