sedimentary

Iron-stained weathered stone, likely sandstone

Quartz-rich sandstone with iron-oxide staining (tentative identification)

AI-generated identification · may be incorrect

Tan-gray with rusty orange surface staining and a darkened base; appears granular and weathered. Likely chiefly quartz, Mohs hardness about 6–7; exact luster, cement, and texture cannot be confirmed from the photo.

Identified October 9, 2026More sedimentary →

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Physical properties

Formation & geological history

Possibly formed as sand grains cemented by silica, carbonate, or iron oxides, then exposed to weathering; its age and precise origin cannot be determined visually.

Uses & applications

Comparable sandstone is used as building and paving stone, while this small weathered piece is mainly suitable for collecting or display.

Geological facts

Orange coloration commonly results when iron-bearing minerals oxidize, producing hematite or goethite stains.

Field identification & locations

A sandy, gritty texture and visible grains support sandstone identification; the rounded, uneven surface suggests weathering. A fresh broken face or hardness and acid tests would help distinguish it from other rocks.