mineral

Iron-rich rock fragment (tentative)

Unidentified iron oxide/hydroxide-rich material; possible hematite or goethite

AI-generated identification · may be incorrect

Small, dark reddish-brown, irregular and dull-looking specimen; image resolution is insufficient to assess hardness, streak, luster, or crystal structure reliably.

Identified October 13, 2026More mineral →

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Physical properties

Small, dark reddish-brown, irregular and dull-looking specimen; image resolution is insufficient to assess hardness, streak, luster, or crystal structure reliably.

Formation & geological history

Iron oxides and hydroxides form through oxidation and weathering of iron-bearing minerals, or may occur in iron-rich sedimentary deposits; age and specific formation setting cannot be determined from the image.

Uses & applications

Iron ores are used to produce steel and pigments; this fragment has no clear commercial or jewelry value based on its appearance.

Geological facts

A reddish-brown color can result from hematite or goethite, but color alone cannot distinguish these minerals from other rocks or iron-rich material.

Field identification & locations

Check a fresh surface and streak on unglazed porcelain: hematite typically gives a red-brown streak, while goethite gives a yellow-brown streak. A magnet test and hardness test can help narrow identification; location and scale are unavailable here.