mineral

Iron-rich rock, possibly hematite-rich ore

Likely hematite (Fe₂O₃) with possible goethite or host-rock minerals; identification is uncertain from the image alone

AI-generated identification · may be incorrect

Rough, irregular dark reddish-brown specimen with a dull to slightly metallic luster. Hematite has Mohs hardness 5–6 and a trigonal crystal structure; a diagnostic red-brown streak cannot be confirmed visually.

Identified September 23, 2026More mineral →

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Physical properties

Formation & geological history

Iron oxides form through oxidation and weathering of iron-bearing rocks, or by chemical precipitation and later alteration of iron-rich deposits. The specimen’s age and specific formation setting cannot be determined from the image.

Uses & applications

Hematite is an important iron ore and is used for pigments and polishing; attractive specimens may be collected or used decoratively.

Geological facts

Hematite’s distinctive reddish-brown streak can help distinguish it from many other dark, metallic-looking minerals.

Field identification & locations

Look for a red-brown streak on unglazed porcelain and unusually high heft; common sources include iron-ore deposits worldwide. A streak or laboratory test is needed for reliable identification.