Carbonaceous materials in the acid residue from the Orgueil carbonaceous chondrite meteorite

LOOKING FOR THE CARRIER PHASE OF Cr IN THE CARBONACEOUS CHONDRITE ORGUEIL

Introduction: 54 Cr anomalies are widely distributed in inner Solar System materials [1-6]. These variations have been attributed to nucleosynthetic effects. Astronomical models predict that 54 Cr, along with other neutron-rich nuclides, such as 50 Ti, are produced in a neutron-rich environment at or near nuclear statistical equilibrium in both Type Ia and Type II supernovae [7,8]. Further cons...

Powder X-ray Diffractometry of the Orgueil Carbonaceous Chondrite: Insights into the Clay Mineralogy

Basalts in the Lance Carbonaceous Chondrite

für Naturforschung in cooperation with the Max Planck Society for the Advancement of Science under a Creative Commons Attribution 4.0 International License. Dieses Werk wurde im Jahr 2013 vom Verlag Zeitschrift für Naturforschung in Zusammenarbeit mit der Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. digitalisiert und unter folgender Lizenz veröffentlicht: Creative Commons Namen...

Carbonaceous Chondrite Fragments in the Polymict Eucrite

Introduction: Buchanan et al. [1] and Zolensky et al. [2] described carbonaceous chondrite fragments in a variety of howardites and concluded that the majority are CM2 and CR2 materials. Gounelle et al. [3] also described similar, but very small, fragments in these meteorites. These clasts are important because they represent materials that were in orbital proximity to the HED parent body (4 Ve...

A contamination assessment of the CI carbonaceous meteorite Orgueil using a DNAdirected approach

The Orgueil meteorite has become one of the most well-studied carbonaceous meteorites, after it fell in France 150 yr ago. Extraterrestrial organic compounds such as amino acids and nucleobases in the parts per billion ranges were identified in Orgueil samples with supporting isotopic analyses. However, speculations of terrestrial contamination such as organic inclusions in the form of microbes...