sedimentary

Iron-rich sandstone or weathered ironstone

Ferruginous sandstone; predominantly quartz (SiO₂) cemented or stained by iron oxides such as hematite and goethite

AI-generated identification · may be incorrect

Likely Mohs hardness 5–7; rusty orange, red, yellow, and brown coloration; dull to earthy luster; granular texture with no obvious cleavage. The blurred image limits confident identification and testing of grain structure or density.

Identified August 12, 2026More sedimentary →

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At a glance

Common name: Iron-rich sandstone or weathered ironstone
Scientific name: Ferruginous sandstone; predominantly quartz (SiO₂) cemented or stained by iron oxides such as hematite and goethite
Category: sedimentary
Identified: August 12, 2026
Method: Standard

AI Estimated Value

Typically $1–$15 for a common hand specimen; $20–$75 if unusually patterned, heavy, or locality-identified.

Not an official valuation

AI estimate for general interest only — not an appraisal. Actual value depends on condition, provenance, and market demand. Verify with a professional before buying, selling, or insuring.

This identification was generated by AI and may contain errors. Verify important details before relying on them — and never use an AI result to judge whether a specimen is safe to handle. Read the full disclaimer

Physical properties

Formation & geological history

Formed when sand accumulated, lithified, and became cemented or stained by iron-bearing groundwater; commonly Mesozoic–Cenozoic, though age varies widely by locality.

Uses & applications

Used locally as building or landscaping stone and collected as an attractive ironstone specimen; generally has little gem or commercial value.

Geological facts

Iron oxides produce the vivid red-orange coloration, while yellow areas may indicate goethite or limonite. A reddish streak and appreciable heft support an iron-rich composition.

Field identification & locations

Common in sedimentary basins, desert outcrops, and weathered ironstone deposits worldwide. Check for visible sand grains, a white-to-reddish streak, reaction to dilute acid, and magnetic response; a clearer close-up and locality would improve identification.