A Michigan man recently learned that a rock he's been using as a doorstop is a meteorite worth $100,000. The Smithsonian Museum and Central Michigan University say the nearly 23-pound hunk of iron ...

Sirbescu estimates its value at $100,000 (£76,400, AU$141,600). ... An examination found that the rock is an iron-nickel meteorite composed of mostly iron with 12 percent nickel.

An ancient iron arrowhead found near Lake Biel in Switzerland, dating back to the Bronze Ages, was likely made of iron that originated from a meteorite, researchers participating in a study by the ...

Iron meteorites are mainly made of an iron-nickel alloy with a distinctive crystalline structure known as a Widmanstätten texture. Bands are formed by varying levels of nickel. There can be wide ...

INVESTIGATIONS have been conducted in this laboratory during the last few years on the structure of artificially prepared iron-nickel alloys in the iron end of the equilibrium diagram, and during ...