mineral

Weathered iron-rich concretion or possible meteorite

Likely limonite/goethite concretion; meteorite status unconfirmed

AI-generated identification · may be incorrect

Tan-brown, rounded, dull earthy luster with pits and small cavities; likely hardness about 4–6, no visible crystal structure or cleavage, and moderate-to-high density. A magnet and streak test are needed; genuine iron meteorites usually show strong magnetism and a dark gray metallic interior when freshly cut.

Identified August 16, 2026More mineral →

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Physical properties

Formation & geological history

Most likely formed by groundwater cementing sediment with iron oxides, producing a weathered concretion over geologically recent to ancient time. Its appearance alone does not establish extraterrestrial origin.

Uses & applications

Common concretions have little commercial use and modest collector interest; iron-rich material may be used as pigment or iron ore locally. Meteorites can be scientifically and commercially valuable if authenticated.

Geological facts

The rounded shape, vesicle-like pits, and pale earthy surface are more typical of a terrestrial concretion than a meteorite. Avoid cutting until magnetism, density, streak, and laboratory testing are completed.

Field identification & locations

Check for strong magnetic attraction, unusually high density, a non-red streak, and a fresh metallic interior; exclude industrial slag, which often has glassy texture and abundant bubbles. Common localities include sedimentary basins worldwide.