Field Museum meteorites help determine planetary core formation

Thu, 06/26/2014 - 10:49 -- pheck

A Field Museum research loan of iron meteorites that were made available to a group of researches in Germany led to the most accurate chronology to date of planetary core formation.

The group’s study finds that planetary cores formed very fast in geological terms, in about 1 million years after the first solids condensed in the solar system. For the first time the study finds also that cores of the parent bodies of different iron meteorites formed at different times. This was previously unknown and unresolvable because the analytical methods were not precise enough.

Atom-by-Atom Analysis of Nanodiamonds from a Meteorite

Sat, 03/08/2014 - 08:22 -- pheck

Dr. Philipp Heck, the Robert A. Pritzker Associate Curator for Meteoritics and Polar Studies and head of the Robert A. Pritzker Center, published a paper on atom-probe tomography of nanodiamonds from The Field Museum’s Allende meteorite in the journal Meteoritics & Planetary Science. This is the first application of the novel technique of Atom-Probe Tomography (APT) in the field of cosmochemistry.

Terry Boudreaux donates unique meteorite to the Field Museum

Tue, 01/14/2014 - 23:02 -- pheck

The meteorite, named Northwest Africa 7325, was found in Southern Morocco in early 2012 and likely comes from an asteroid in the space between Mars and Jupiter. The rock has puzzled scientists, leading one to speculate that it comes from the planet Mercury; however most researchers find this claim weak due to lack of evidence. This rock is an ungrouped achondrite and comes from a planetary body that has not been sampled before. Its study will enhance our picture of the diversity of planets in our solar system, and help better understand the formation of the planets, including Earth.