Meteorite or Meteorwrong

Meteorite Fusion Crust

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Iron Meteorites and Pallasites

Experts disagree on whether iron meteorites have a fusion crust. In my opinion, they do not, but they do have a "patina."

Sikhote-Alin (IIAB) is a good example of an iron meteorite with a patina. It fell in 1947, so it is not weathered. (Photo credit: Randy Korotev.


The Bur-Abor (IIIAB) iron meteorite from Kenya also has a nice patina. (Photo credit: ?)


The Sterley (Texas) pallasite (PMG). Like many other iron and pallasite meteorites, it was found by a farmer plowing a field, so it has a weathered exterior and no obvious fusion crust. The cube is 1 cm in dimensions. (Photo credit: Laurence Garvie)


The Conception Junction (Missouri) pallasite (PMG-an) was also found in a farm field. The exterior is highly weathered, but the sawn area shows bright metal with imbedded grains of olivine. (Photo credit: Randy Korotev)


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Here are more photos of meteorite fusion crusts.



Prepared by: Randy L. Korotev

Department of Earth and Planetary Sciences
Washington University in St. Louis

Please donít contact me about the meteorite you think that
youíve found until you read this and this.



Last revised: 17 April 2019