Rock Identifier
Possible iron meteorite (Iron meteorite, likely an iron–nickel alloy (kamacite/taenite)) — meteorite
meteorite

Possible iron meteorite

Iron meteorite, likely an iron–nickel alloy (kamacite/taenite)

AI-generated identification · may be incorrect

Dark metallic-gray, irregular and heavily weathered, with yellow-brown iron-oxide staining and possible regmaglypt-like pits; fresh iron meteorites are metallic, dense (typically 7–8 g/cm³), and Mohs hardness about 4–5. A magnet should attract it strongly; a polished, etched face may reveal a Widmanstätten pattern.

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Physical properties

Dark metallic-gray, irregular and heavily weathered, with yellow-brown iron-oxide staining and possible regmaglypt-like pits; fresh iron meteorites are metallic, dense (typically 7–8 g/cm³), and Mohs hardness about 4–5. A magnet should attract it strongly; a polished, etched face may reveal a Widmanstätten pattern.

Formation & geological history

Formed in the metallic core of a differentiated asteroid and crystallized over geological time, commonly more than 4 billion years ago; later excavated by impact and survived atmospheric entry. The image alone cannot confirm extraterrestrial origin.

Uses & applications

Primarily valued for scientific study, education, and collecting; cut and polished pieces are used in jewelry and display. Confirmed specimens can be substantially more valuable than ordinary iron-rich terrestrial rocks.

Geological facts

The black crust and rusty weathering resemble meteorites, but terrestrial slag, magnetite, and hematite can look similar. Definitive identification requires laboratory testing, especially nickel analysis and examination for a Widmanstätten pattern.

Field identification & locations

Common finds occur in arid regions and Antarctic ice; field clues include unusual density, magnetism, fusion crust, and lack of vesicles, though this specimen appears strongly weathered. Estimated value: $0–$20 if unverified terrestrial material; roughly $50–$500+ if authenticated, depending on mass, provenance, and structure.