mineral

Iron-stained weathered stone (tentative)

Undetermined; possibly weathered iron-rich basalt or concretion

AI-generated identification · may be incorrect

Dark gray-green, dull to slightly earthy luster, irregularly rounded and heavily weathered surface; hardness approximately 5–7 if basaltic, with no visible crystals or cleavage. The central notch may be a natural fracture or erosion feature.

Identified August 10, 2026More mineral →

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Physical properties

Formation & geological history

Likely an iron-bearing volcanic rock or sedimentary concretion shaped by weathering and abrasion; its age and exact formation cannot be established from the photograph alone.

Uses & applications

Primarily a curiosity or collectible; uncut material has no significant industrial or jewelry value unless testing identifies an ore or unusual mineralization.

Geological facts

The rusty orange-brown areas are consistent with oxidation of iron-bearing minerals. A hardness test, streak test, magnet test, density measurement, and a fresh broken surface would substantially improve identification.

Field identification & locations

Common possibilities include weathered basalt, ironstone, or a rounded concretion; these occur worldwide, especially in river gravels and exposed weathering zones. It does not visibly resemble a typical meteorite because of its rough, porous-looking surface and apparent iron staining.