mineral
Small brown pebble, likely iron-stained quartz or chert
Unidentified quartz-rich or microcrystalline silica pebble (SiO₂)
AI-generated identification · may be incorrectThe image shows a rounded, opaque-to-slightly translucent brown pebble with a dull to faintly glassy surface. If quartz-rich, hardness is about 7 Mohs; exact composition and properties cannot be confirmed visually.
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Physical properties
The image shows a rounded, opaque-to-slightly translucent brown pebble with a dull to faintly glassy surface. If quartz-rich, hardness is about 7 Mohs; exact composition and properties cannot be confirmed visually.
Formation & geological history
Likely weathered from a silica-rich rock and rounded by stream or ground transport; its geological age and original source cannot be determined from the image.
Uses & applications
A small specimen with little industrial or jewelry value; suitable for collecting or crafts.
Geological facts
Brown coloration commonly results from iron-oxide staining, though other minerals can produce similar colors.
Field identification & locations
Quartz and chert pebbles are common in stream gravel and soils; check for glassy fracture, hardness, and streak to distinguish them. The image alone does not support a definitive identification.
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