Two papers on CAIs from Murchison published

Fri, 08/19/2016 - 08:54 -- Anonymous (not verified)

University of Chicago postdoctoral scientist Levke Kööp, Robert A. Pritzker Associate Curator Philipp Heck, and colleagues from the Universities of Chicago, Wisconsin, and Hawaii, recently published two articles in the journal Geochimica and Cosmochimica Acta. The focus of their work was on some of the first materials that formed in the Solar System, i.e., inclusions in meteorites rich in the mineral hibonite.

Analysis of micrometeorites reveals H chondrite needles in L Chondrite haystack

Thu, 03/17/2016 - 16:04 -- pheck

Philipp Heck (Robert A. Pritzker Associate Curator of Meteoritics and Polar Studies), Surya Rout (Postdoctoral Research Scientist), Krysten Villalon (Univ. of Chicago Graduate Student) and Lund University’s Professor Birger Schmitz (also a Field Museum Research Associate) with colleagues from the University of Wisconsin published a new paper on 470-million-year-old fossil micrometeorites recovered from marine sediments in Sweden and Russia.

Field Museum Meteorite Resolves 35-Year-Old Debate

Thu, 03/10/2016 - 21:13 -- pheck

University of Chicago graduate student François Tissot, along with his advisor Professor Nicolas Dauphas and Professor Emeritus Larry Grossman (both FMNH Research Associates), have discovered evidence that a rare element, curium, was present during the formation of the Solar System. The finding ends a 35-year-old debate on its possible presence in the early Solar System, and plays a crucial role in reassessing models of stellar evolution and synthesis of elements in stars.

Refractory Metal Nuggets Paper published in Geochimica et Cosmochimica Acta

Wed, 10/21/2015 - 15:07 -- pheck

University of Chicago Graduate Student Levke Kööp, her co-advisor Robert A. Pritzker Associate Curator Philipp Heck and colleagues from Germany are authors on an article on 4.6-billion-year old metal nuggets in the journal Geochimica and Cosmochimica Acta. These micro-nuggets made of rare metals like iridium and tungsten are found inside the oldest minerals (hibonites and spinels) that formed in the Solar System.