Astromat

Collection of Bennu 40Ar/39Ar analytical datasets.

Collection of Bennu petrographic and SEM datasets.

This includes two presentations from the Astromat Workshop at MetSoc 2026. The workshop aims to help researchers navigate the landscape of astromaterials sample data, from finding and accessing lab analytical data, to generating Open Science Data Management Plans (OSDMPs) for funding proposals, to documenting their own lab analytical data following community best practices, to depositing and archiving data in compliance with funders’ and journals’ policies. We specifically aim at early-career researchers to help them develop skills in digital cosmochemistry and make them aware of the resources available to support their data management. The workshop is organized by the Astromaterials Data System (Astromat), NASA’s designated archive for laboratory analytical data of returned samples.

Collection of 40Ar/39Ar geochronology and thermochronology datasets. The data were collected at the Western Australia Argon Isotope Facility, John de Laeter Centre, Curtin University, Western Australia.

This submission contains (for each of the five samples analysed) the SXRF scans (images) that show the distribution of the apatite grains measured, SXRF scans that show the position of the point measurements performed, and the quantified REE concentrations of each of the apatite grains (both the absolute concentrations and the CI-normalised concentrations).

Atom probe tomography reconstructed data from APT specimen OREX-803469-108, analysed in laser-assisted mode. All valid APT data is included, using an extended (Epos) data format that allows generation of alternative spatial reconstructions if required. This data set contains a moderate amount of 69Ga contamination near the specimen surface, and approximately 100 nm into the reconstruction on one side, due to ion implantation during specimen preparation with a monoisotopic 69Ga+ focussed ion beam. The data indicates a combination of pentlandite and pyrrhotite mineral phases. The pentlandite mineral contains several one-dimensional features enriched in Na and OH2. The reconstruction was performed using the voltage to model the specimen radius. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-100, analysed in laser-assisted mode. All valid APT data is 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. The data indicates a homogenous pyrrhotite mineral phase. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-101, analysed in laser-assisted mode. All valid APT data is 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. The data indicates a homogenous pyrrhotite mineral phase containing fluid inclusions. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-102, analysed in laser-assisted mode. All valid APT data is included, using an extended (Epos) data format that allows generation of alternative spatial reconstructions if required. The data indicates a homogenous pyrrhotite mineral phase. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-103, analysed in laser-assisted mode. All valid APT data is 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. The data indicates a pyrrhotite mineral phase containing a small planar feature enriched in Mg, Al, and Si. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-104, analysed in laser-assisted mode. All valid APT data is included, using an extended (Epos) data format that allows generation of alternative spatial reconstructions if required. This data set contains a moderate amount of 69Ga contamination near the specimen surface due to ion implantation during specimen preparation with a monoisotopic 69Ga+ focussed ion beam. The data indicates a pyrrhotite mineral phase containing fluid inclusions. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-109, analysed in laser-assisted mode. All valid APT data is included, using an extended (Epos) data format that allows generation of alternative spatial reconstructions if required. The data indicates a mostly homogeneous pentlandite mineral phase, with small inclusions of pyrrhotite. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-107, analysed in laser-assisted mode. All valid APT data is 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. The data indicates a combination of pentlandite and pyrrhotite mineral phases, with the interface between the minerals present throughout the acquisition. The pyrrhotite mineral contains several apparent fluid inclusions. The reconstruction was performed using the voltage to model the specimen radius. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803469-106, analysed in laser-assisted mode. All valid APT data is included, using an extended (Epos) data format that allows generation of alternative spatial reconstructions if required. The data indicates a homogeneous pentlandite mineral phase. A mass range definition file is included with all identified mass peaks.

This dataset contains gas chromatography-triple quadrupole mass spectrometry results acquired from subsamples of the aggregate sample C0378 returned from asteroid (162173) Ryugu by the Hayabusa2 mission. Three analyses were conducted: 1) 1.8 milligrams of sample was thermally degraded by flash pyrolysis at 600 C to release volatile and macromolecularly bound organic compounds; 2) 2 milligrams of sample was treated with tetramethylammonium hydroxide in methanol and analyzed by two-step thermochemolysis consisting of a ramped heating 400 to 500 C with cryogenic trapping of the evolved products, followed by flash heating of the same sample at 600 C; 3) 1.5 milligrams of sample was derivatized with N-(tert-butyldimethylsilyl)-N-methyltrifluoroacetamide in N,N-dimethylformamide. Associated blanks are included for all samples. Data was collected in full scan, multiple reaction monitoring, or simultaneous full scan and multiple reaction monitoring modes as specified in the sample list file. The purpose of this dataset is to characterize the macromolecular (insoluble organic matter - IOM) and solvent-extractable (soluble organic matter - SOM) organic reservoirs of Ryugu, including polycyclic aromatic hydrocarbons and their alkylated homologues, sulfur-, oxygen-, and nitrogen-bearing heterocyclic aromatic compounds, carboxylic acids, amino acids, and nitrogen heterocycles.