Nitrogen components in primitive ordinary chondrites

Presolar Grains from Primitive Ordinary Chondrites

Kobayashi, K. Nagashima, N. Sakamoto, S. S. Russell, S. Itoh and H. Yurimoto. Division of Earth and Planetary Sciences, Hokkaido University, Sapporo, Hokkaido 060-0810, Japan ([email protected]); Hawai’i Institute of Geophysics and Planetology, School of Ocean and Earth Science and Technology, University of Hawai’i at Manoa, Honolulu, HI 96822, USA; Department of Mineralogy, The Natura...

Interstellar Components in the Primitive Cr3 Chondrites Que

Introduction: Presolar material incorporated into primitive solar system bodies consists of both circumstellar stardust formed in the outflows of RG or AGB stars and the ejecta of supernovae [1], and interstellar material thought to form via low temperature ion-molecule reactions in cold molecular clouds [2]. Deuterium and N isotopic anomalies associated with the latter are common in interplane...

Oxygen isotopes in R-chondrite magnetite and olivine: Links between R chondrites and ordinary chondrites

Ion-microprobe studies yield DO (5dO 2 0.52 z dO) values in magnetite from the Rumurti chondrite (RC) PCA91241 (which is paired with PCA91002) of 13.1 to 13.9‰, slightly higher than that in O from whole-rock R samples. Despite DO values in whole-rock RCs that are much (by ca. 1.6‰) higher than in whole-rock LL chondrites, the DO in R magnetite is much lower (by ca. 2‰) than the values (14 to 17...

Be-B IN ENSTATITE AND ORDINARY CHONDRITES: A PRELIMINARY STUDY

ORIGIN AND THERMAL HISTORY OF FeNi - METAL IN PRIMITIVE CHONDRITES

M. I. Petaev, A. Meibom, C. Perron, and B. Zanda, Dept. of the Geophysical Sciences, University of Chicago (5734 S. Ellis Ave., Chicago, IL 60637 USA; [email protected]), Dept. of Earth and Planetary Sciences, Harvard University (20 Oxford St., Cambridge, MA 02138 USA; [email protected]), Dept. of Geological and Environmental Sciences, Stanford University (Building 320, Lomita Mall,...