Coordinated NanoSIMS and FIB-TEM analyses of organic matter and associated matrix materials in CR3 chondrites

C Floss, C Le Guillou, A Brearley - Geochimica et Cosmochimica Acta, 2014 - Elsevier
The organic matter in the primitive CR3 chondrites QUE 99177 and MET 00426 exhibits, as
in other CR chondrites, N isotopic compositions characterized by large enrichments in 15 N …

Early solar system processes recorded in the matrices of two highly pristine CR3 carbonaceous chondrites, MET 00426 and QUE 99177

NM Abreu, AJ Brearley - Geochimica et Cosmochimica Acta, 2010 - Elsevier
The mineralogy and bulk compositions of the matrices of the CR chondrites MET 00426 and
QUE 99177 have been studied using a combination of SEM, EPMA, and TEM techniques …

Investigating the variations in carbon and nitrogen isotopes in carbonaceous chondrites

MA Sephton, AB Verchovsky, PA Bland… - … et Cosmochimica Acta, 2003 - Elsevier
The carbonaceous chondrites contain significant amounts of carbon-and nitrogen-bearing
components, the most abundant of which is organic matter. Stepped combustion data of …

High abundances of presolar grains and 15N-rich organic matter in CO3. 0 chondrite Dominion Range 08006

LR Nittler, CMOD Alexander, J Davidson… - … et Cosmochimica Acta, 2018 - Elsevier
Abstract NanoSIMS C-, N-, and O-isotopic mapping of matrix in CO3. 0 chondrite Dominion
Range (DOM) 08006 revealed it to have in its matrix the highest abundance of presolar O …

Reassessing the proposed “CY chondrites”: Evidence for multiple meteorite types and parent bodies from Cr-Ti-HCN isotopes and bulk elemental compositions

DL Schrader, ZA Torrano, DI Foustoukos… - … et Cosmochimica Acta, 2025 - Elsevier
We report a coordinated bulk Cr-Ti-HCN isotopic and compositional study of six
carbonaceous chondrites from Antarctica that are often considered to be related and termed …

The CR (Renazzo-type) carbonaceous chondrite group and its implications

MK Weisberg, M Prinz, RN Clayton… - … et Cosmochimica Acta, 1993 - Elsevier
A petrologic, geochemical and oxygen isotopic study of eight meteorites, identified as CR
(Renazzo-type) chondrites, reveals that they have a set of similar properties that …

Carbon and nitrogen in carbonaceous chondrites: Elemental abundances and stable isotopic compositions

VK Pearson, MA Sephton, IA Franchi… - … & Planetary Science, 2006 - Wiley Online Library
We have undertaken a comprehensive study of carbon and nitrogen elemental abundances
and isotopic compositions of bulk carbonaceous chondrites. A strategy of multiple analyses …

Hydrogen isotopic composition of CI-and CM-like clasts from meteorite breccias–Sampling unknown sources of carbonaceous chondrite materials

M Patzek, P Hoppe, A Bischoff, R Visser… - … et Cosmochimica Acta, 2020 - Elsevier
Volatile-rich, CI-and CM-like clasts occur in different brecciated achondrite and chondrite
groups. The CI-like clasts in HEDs, polymict ureilites, as well as ordinary, CR, and CB …

Cr isotopes in physically separated components of the Allende CV 3 and Murchison CM 2 chondrites: Implications for isotopic heterogeneity in the solar nebula and …

Y Kadlag, H Becker, A Harbott - Meteoritics & planetary science, 2019 - Wiley Online Library
Chromium isotopic data of physically separated components (chondrules, CAI s, variably
magnetic size fractions) of the carbonaceous chondrites Allende and Murchison and bulk …

Nanoscale mineralogy and organic structure in Orgueil (CI) and EET 92042 (CR) carbonaceous chondrites studied with AFM‐IR spectroscopy

VTH Phan, R Rebois, P Beck, E Quirico… - … & Planetary Science, 2022 - Wiley Online Library
Meteorite matrices from primitive chondrites are an interplay of ingredients at the sub‐µm
scale, which requires analytical techniques with the nanometer spatial resolution to decipher …