mineral

Small brown pebble or mineral fragment

Indeterminate from image; possibly iron-stained quartz, ironstone, or a dark mineral grain

AI-generated identification · may be incorrect

Tiny rounded brown specimen with a dull to weakly earthy luster; hardness, cleavage, crystal structure, and specific gravity cannot be determined reliably from the photograph. Its smooth shape may reflect natural abrasion or handling.

Identified August 30, 2026More mineral →

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Physical properties

Formation & geological history

Likely a weathered fragment transported by water or erosion; geological age and formation environment are undetermined without testing. Brown coloration commonly results from iron-oxide staining.

Uses & applications

No practical use at this size; mainly a curiosity or teaching specimen. Collector value is negligible unless testing reveals a rarer mineral or meteorite.

Geological facts

The image alone cannot distinguish an ordinary pebble from a mineral, slag, or meteorite. A magnet test, streak test on unglazed porcelain, hardness testing, and close inspection of texture would help.

Field identification & locations

Examine for visible grains, vesicles, metallic luster, fusion crust, or unusual density; test whether it scratches glass and leaves a brown or black streak. Common possibilities occur worldwide in stream gravels and soils.