Meteorite Bur-Abor donated to Field Museum

Sat, 06/26/2010 - 09:39 -- admin

Picture of the donated Bur-Abor iron meteorite specimen. The weathering is obvious from the rusty color and differentially weathered metal (spikes on the left). Photographer: Robert J. Macke.

On May 18, Chicagoan Mohamud Esmail donated 140 g of the Bur-Abor iron meteorite (IIIAB) to The Field Museum’s Robert A. Pritzker Center for Meteoritics and Polar Studies. The Meteoritical Bulletin reports that several dozen fragments of this meteorite were found in 1997 by a family in northeast Kenya after they heard an explosion and saw a cloud of dust. Nearby banana trees were broken, and some contained embedded metal shards. However, the recovered iron meteorite is too weathered to be consistent with a recent date of fall.

The specimen received is particularly useful for teaching because it displays the differential weathering of the iron-nickel-phases kamacite and taenite beautifully at the surface. This makes this specimen a valuable addition to the Field’s meteorite collection.