Atom probe tomography analysis of needle specimen OREX-803470-110 containing a small amount of pyrrhotite with fluid inclusions
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Description
Atom probe tomography reconstructed data from APT specimen OREX-803470-110, analysed in laser-assisted mode. All valid APT data is in included, using an extended (Epos) data format that allows generation of alternative spatial reconstructions if required. This data set contains a small amount of 69Ga contamination near the specimen surface due to ion implantation during specimen preparation with a monoisotopic 69Ga+ focussed ion beam. This realtively short acquisition contains a significant discontinuity in the form of a likely micro-fracture event approximately half-way through the analysis. The initial data indicates a pyrrhotite mineral phase containing a small number of fluid inclusions. After the fracture event the spatial reconstruction is highly distorted, and its chemical composition contains signatures consistent with pentlandite as well as signifcant Si, Mg and Al. The laser pulse energy was increased from 0.05 to 0.07 nJ after the micro-fracture. A mass range definition file is included with all identified mass peaks.
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How To Cite
Saxey, D., 2026. Atom probe tomography analysis of needle specimen OREX-803470-110 containing a small amount of pyrrhotite with fluid inclusions, Version 1.0. Astromaterials Data Archive. https://doi.org/10.60707/bkp1-v196 Accessed 2026-10-05.
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Funding Sources
This material is supported by NASA under contract NNM10AA11C issued through the New Frontiers program. Analyses were funded by Space Science and Technology Centre at Curtin University, and Australian Research Council Discovery Project DP260104876. The Geoscience Atom Probe Facility was established with funding from the Science and Industry Endowment Fund (SIEF).
