sedimentary

Red-brown pebble, possibly iron-stained sandstone

Indeterminate from the image; likely iron-oxide-stained quartz-rich rock

AI-generated identification · may be incorrect

Rounded, opaque, dull to slightly earthy surface; reddish-brown coloration suggests iron oxides. Hardness, grain structure, cleavage, and specific gravity cannot be reliably determined from the photograph.

Identified October 13, 2026More sedimentary →

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Physical properties

Formation & geological history

Could have formed as a sedimentary pebble and acquired its color from hematite or other iron-oxide staining; age and original environment cannot be identified visually.

Uses & applications

Likely a common natural pebble, suitable for collecting or landscaping; no special industrial or gem use is evident.

Geological facts

Iron oxides commonly produce red and brown colors in rocks, but similar colors occur in many unrelated rock types.

Field identification & locations

The rounded shape suggests water or abrasion transport. Inspect a broken or magnified surface for sand-sized grains, and test hardness and streak to distinguish sandstone from other iron-rich rocks.