mineral
Likely tumbled or water-worn quartz pebble
Quartz, SiO₂ (identification from the image is uncertain)
AI-generated identification · may be incorrectRounded, opaque cream-to-brown pebble with a slight sheen; quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage, but the pictured surface and scale limit reliable testing.
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Physical properties
Rounded, opaque cream-to-brown pebble with a slight sheen; quartz has Mohs hardness 7, a trigonal crystal structure, and no cleavage, but the pictured surface and scale limit reliable testing.
Formation & geological history
If quartz, it formed in silica-rich geological settings and was later rounded by weathering or water transport; its age cannot be determined from the image.
Uses & applications
Quartz pebbles are used decoratively in landscaping, crafts, and collections; this specimen appears to have modest decorative value.
Geological facts
Brown coloring may come from iron-oxide staining; similar-looking pebbles can also be other minerals or rock fragments.
Field identification & locations
Look for hardness near 7 and a glassy fresh break without cleavage; quartz is widespread in many rock types and sediments.
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