triple oxygen isotope analysis of fine carbonate particles in OREX-803057-0 by secondary ion mass spectrometry (SIMS) at Curtin University, Western Australia
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Description
Triple oxygen isotope analysis data for four fine magnesite and four fine dolomite particles in OREX-803057-0 via CAMECA IMS 1300-HR3 instrument, the John de Laeter Centre, Curtin University, Western Australia. Petrographic context for SIMS analyses provided in terms of crystallographic microstructures identified via electron backscatter diffraction (EBSD) mapping and compositional zones identified via energy dispersive spectroscopy (EDS) mapping and spot analysis (with methods described herein and raw data provided in separate data bundles). The effect of mineral chemistry on the bias of SIMS δ18O determinations (“matrix effect”) was estimated following procedures detailed in Sliwinski et al. (2016, GGR) using the Fe# of minerals obtained via EDS spot measurements.
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How To Cite
Timms, N., 2026. triple oxygen isotope analysis of fine carbonate particles in OREX-803057-0 by secondary ion mass spectrometry (SIMS) at Curtin University, Western Australia, Version 1.0. Astromaterials Data Archive. https://doi.org/10.60707/73yw-vm47 Accessed 2026-09-30.
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Funding Sources
This material is supported by NASA under contract NNM10AA11C issued through the New Frontiers program. The Tescan MIRA3 FE-SEM at the John de Laeter Centre, Curtin University was obtained via funding from the Australian Research Council LIEF program (ARC LE130100053). SEM analyses were supported by the Space Science and Technology Centre and Australian Research Council Discovery Project DP260104876. SIMS analyses were supported by the John de Laeter Centre at Curtin University
