sedimentary

Small iron-oxide-rich rock fragment (possibly ferruginous sandstone)

Ferruginous sandstone or ironstone; likely quartz grains cemented by iron oxides such as hematite/goethite

AI-generated identification · may be incorrect

Small, rough, brown-red fragment with an earthy to dull luster and no visible crystal faces. Exact hardness, cleavage, and specific gravity cannot be determined from the photo; ferruginous sandstone is typically about 6–7 Mohs if quartz-rich.

Identified September 24, 2026More sedimentary →

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At a glance

Common name: Small iron-oxide-rich rock fragment (possibly ferruginous sandstone)
Scientific name: Ferruginous sandstone or ironstone; likely quartz grains cemented by iron oxides such as hematite/goethite
Category: sedimentary
Identified: September 24, 2026
Method: Standard

AI Estimated Value

Typically under $1 for a loose fragment; no meaningful collector premium is apparent.

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

Likely formed as sedimentary grains cemented or stained by iron oxides during weathering or groundwater circulation. The reported location in eastern Morocco makes iron-stained sedimentary material plausible, but the fragment is too small to establish its age or origin.

Uses & applications

Commonly has no commercial value at this size; ironstone and ferruginous sandstone can be used as construction stone or iron ore when sufficiently rich in iron.

Geological facts

Iron oxides produce the rusty red-brown color and may leave a reddish or ochre streak. The specimen’s grain texture and composition are not clear enough in this image for a definitive identification.

Field identification & locations

A rusty surface and gritty texture would support ferruginous sandstone; a red-brown streak suggests hematite, while a yellow-brown streak favors goethite. A fresh break and simple streak/magnet tests can help distinguish it; iron-rich rocks occur in many settings.