Astromat

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).

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.

This dataset contains Atomic Force Microscopy (AFM) measurements of particle cohesion for three carbonaceous chondrite meteorites: Aguas Zarcas, Tagish Lake, and Tarda. These meteorites were selected as terrestrial analog materials for comparison with samples returned from asteroid (101955) Bennu, using the same AFM-based measurement technique. The dataset includes raw force–distance curves stored as .txt files, with four columns corresponding to the extend and retract measurements. An accompanying adhesion.txt file provides the measured cohesion (adhesion) force values for each dataset. Individual meteorite particles (e.g., P1, P2) were measured at multiple locations or spots (e.g., Spot 1, Spot 2) to characterize spatial variability in particle cohesion. For each meteorite, measurements were conducted using two different AFM cantilever tips composed of the same material. The raw AFM data require correction and conversion using the cantilever spring constant (K) and deflection sensitivity associated with each tip. These calibration parameters are provided in the supplementary files for each meteorite, together with the complete set of cohesion force measurements expressed in nanonewtons (nN), organized by meteorite, AFM tip, particle, and measurement spot. Together, these data provide a detailed record of particle-scale cohesion measurements for three carbonaceous chondrites and enable direct comparison with analogous AFM measurements obtained from returned material from asteroid (101955) Bennu. The dataset can support investigations of the mechanical and surface properties of carbonaceous asteroid materials and improve our understanding of the role of particle cohesion in the physical behavior and evolution of primitive small bodies.

Atom probe tomography reconstructed data from APT specimen OREX-803470-105, 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 abundant fluid inclusions. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803470-106, 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. 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 abundant fluid inclusions. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803470-107, 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 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-803470-108, 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 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 abundant fluid inclusions. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803470-109, 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. 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 an initial pentlandite mineral phase followed by a transition into pyrrhotite containing several fluid inclusions. Because the specimen voltage varied significantly through the transition, the reconstruction was performed using the geometric constraint of a 5 degree shank angle, rather than 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-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.

Atom probe tomography reconstructed data from APT specimen OREX-803470-101, 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 signifcant amount of 69Ga contamination near the specimen surface due to ion implantation during specimen preparation with a monoisotopic 69Ga+ focussed ion beam. Shortly before the end of the analysis, approximately 90% through the total acquisition, the laser pulse energy was increased from 0.03 to 0.05 nJ, the pulse frequency was increased from 125 to 200 kHz, and the detection rate was increased from 0.008 to 0.01 ions/pulse. A small uptrend in the voltage around that time indicated the potentail proximity of a higher-field mineral phase, and the running conditions were adjusted accordingly. However, the specimen fractured shortly after these adjustments were made. The data indicates a pyrrhotite mineral phase containing abundant fluid inclusions. A mass range definition file is included with all identified mass peaks.

Atom probe tomography reconstructed data from APT specimen OREX-803470-100, 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. The data indicates a pyrrhotite mineral phase containing abundant fluid inclusions, with a small amount of pentlandite appearing toward the end of the acquisition. A mass range definition file is included with all identified mass peaks.

This dataset contains whole rock major and trace element concentrations for 35 lunar impact melt rocks and impact melt breccias from the Apollo 14, 16, 17 landing sites. It contains argon isotopic data (where possible with determined dates) for a subset (24) of the analysed samples. In most cases argon isotopic data were obtained on particles from the same sample split for which major and trace element data were obtained. Short descriptions and sketches of the particles for which Ar isotopic data were obtained are also included. The purpose of the dataset is to document characteristics that allow relationships between age and composition of Apollo melt rocks and melt breccias to be investigated.

Data Fusion of Total Solar Irradiance Composite Time Series Using 41 years of Satellite Measurements. This is a dataset associated with the paper: Montillet, J.-P., Finsterle, W., Kermarrec, G., Sikonja, R., Haberreiter, M., Schmutz, W., & Dudok de Wit, T. (2022). Data fusion of total solar irradiance composite time series using 41 years of satellite measurements. Journal of Geophysical Research: Atmospheres, 127, e2021JD036146. https://doi.org/10.1029/2021JD036146 This dataset is an update from the ones regularly submitted since February 2022.