sedimentary

Orange-brown rock fragment, likely iron-stained sandstone

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

AI-generated identification · may be incorrect

Small, rough, opaque orange-brown fragment with a dull, granular surface; likely mostly quartz (Mohs 7) cemented by silica or iron oxides. The image does not show enough detail to determine its exact composition or structure.

Identified October 13, 2026More sedimentary →

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Physical properties

Formation & geological history

If sandstone, it formed as sand grains were compacted and cemented in a sedimentary environment; iron oxides can produce orange-brown coloration. Its geological age and source cannot be determined from the image.

Uses & applications

This small fragment has no evident industrial or jewelry use; sandstone is commonly used as building and paving stone.

Geological facts

Iron-oxide minerals such as goethite and hematite commonly stain rocks orange, yellow, or red.

Field identification & locations

Look for visible sand-sized grains and a gritty texture; a streak or hardness test could help distinguish sandstone from other iron-stained rocks. The mixed fragments nearby do not establish its source location.