sedimentary

Small rounded pebble, likely quartz-rich sandstone or granitoid fragment

Uncertain; probable quartz/feldspar-bearing lithic pebble

AI-generated identification · may be incorrect

Tan, rounded, and fine-grained with a dull earthy luster; hardness approximately 6–7 if quartz-rich, with no visible cleavage. The small image limits reliable identification and mineral-specific properties.

Identified August 25, 2026More sedimentary →

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Physical properties

Formation & geological history

Likely weathered and water-rounded from a sedimentary or igneous source, then transported and deposited as a pebble; its geological age cannot be determined visually.

Uses & applications

Primarily a natural curiosity or landscaping/collection specimen; no practical value at this size unless it proves to be an unusual mineral or meteorite.

Geological facts

Its rounded shape indicates abrasion during transport, commonly by a stream, beach, or glacial process. The tan color may result from iron-oxide staining.

Field identification & locations

Field tests include checking for visible grains, a glassy streakless surface, and scratching glass; sandstone feels granular, whereas a dense granitoid shows interlocking crystals. Common in streambeds, gravel, beaches, and glacial deposits.