mineral
Small tumbled pebble (likely quartz or feldspar)
Indeterminate; probable quartz (SiO₂) or feldspar
AI-generated identification · may be incorrectTiny rounded, tan-brown, translucent-to-opaque grain with a dull/waxy luster; likely hardness ~6–7 Mohs if quartz, with no visible cleavage. Its small size and out-of-focus image prevent reliable identification.
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Physical properties
Tiny rounded, tan-brown, translucent-to-opaque grain with a dull/waxy luster; likely hardness ~6–7 Mohs if quartz, with no visible cleavage. Its small size and out-of-focus image prevent reliable identification.
Formation & geological history
Likely a naturally weathered mineral grain derived from an igneous or metamorphic rock and transported by sediment or water; geological age is indeterminate.
Uses & applications
Common quartz or feldspar pebbles have little commercial value individually, though similar material is used as aggregate, abrasives, glass feedstock, ceramics, and decorative stone.
Geological facts
Color may result from iron-oxide staining, surface coating, or lighting rather than the mineral itself.
Field identification & locations
Test hardness against glass: scratching glass suggests quartz; feldspar commonly shows two cleavage directions and is slightly softer. A close, well-lit image and tests for streak, cleavage, and hardness are needed for confident identification.
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