sedimentary

Small rounded tan pebble, likely quartz-rich river stone

Indeterminate; possibly quartz or quartzite (predominantly SiO₂)

AI-generated identification · may be incorrect

Cream to tan, rounded and smooth, with a dull to slightly waxy surface and no visible crystals. If quartz-rich, hardness is about 7 Mohs; the image does not reveal cleavage or specific gravity reliably.

Identified September 23, 2026More sedimentary →

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Physical properties

Formation & geological history

Likely worn smooth by water or sediment abrasion; its exact formation history and age cannot be determined from the photograph.

Uses & applications

May be kept as a decorative or educational specimen; no specific industrial or jewelry use can be established from its appearance alone.

Geological facts

The pebble is too small and visually featureless for a confident mineral identification; several common rocks and minerals can look similar when rounded.

Field identification & locations

A quartz-rich pebble typically resists scratching by a steel knife and lacks obvious cleavage, but testing and a closer view of a fresh surface would help distinguish quartz, quartzite, and other materials. Similar pebbles occur in river and beach gravels worldwide.