000103632 001__ 103632 000103632 005__ 20230824003325.0 000103632 0247_ $$2doi$$a10.7936/6rxs-103632 000103632 037__ $$aRDM 000103632 041__ $$aeng 000103632 245__ $$aMineral Products and Fluid Compositions From the Transformations of Iron(III) Minerals in Mars-Relevant Fluids 000103632 260__ $$bWashington University in St. Louis 000103632 269__ $$a2023-05-26 000103632 270__ $$malknight@wustl.edu$$pAbigail Knight 000103632 336__ $$aDataset 000103632 518__ $$d2019-09-01/2023-05-21$$oCollected 000103632 520__ $$aVera Rubin ridge (VRR), located in Gale crater, Mars, contains coarse-grained (>3-5 µm) gray hematite particles. VRR likely experienced multiple episodes of diagenesis in its past, some of which may have formed gray hematite from existing iron(III) minerals. The precursor mineralogy and diagenetic fluid conditions, however, are unknown. Experiments were performed on several iron(III) minerals (akaganeite, ferrihydrite, goethite, red hematite, jarosite, and schwertmannite) to simulate transformations in diagenetic fluid conditions. The solid transformation products were analyzed via powder X-ray diffraction, visible to near-infrared reflectance spectroscopy, and scanning electron microscopy. The compositions of the final fluids were determined via inductively-coupled plasma optical emission spectrometry. Final pH values of the fluid products were measured as well. 000103632 536__ $$oNational Aeronautics and Space Administration$$qhttps://ror.org/027ka1x80$$rROR$$c80NSSC19K1521$$aNASA Science Mission Directorate Future Investigators in NASA Earth and Space Science and Technology (FINESST) 000103632 536__ $$oNational Aeronautics and Space Administration$$qhttps://ror.org/027ka1x80$$rROR$$c80NSSC18K1292$$aNASA Exobiology program 000103632 536__ $$oWashington University in St. Louis$$qhttps://ror.org/01yc7t268$$rROR 000103632 540__ $$aCreative Commons Attribution (CC BY) 4.0 International$$uhttps://creativecommons.org/licenses/by/4.0/ 000103632 650__ $$aPhysical sciences 000103632 650__ $$aEarth and related environmental sciences 000103632 6531_ $$aHematite 000103632 6531_ $$aJarosite 000103632 6531_ $$aVera Rubin ridge 000103632 6531_ $$aDiagenesis 000103632 6531_ $$aGale crater 000103632 6531_ $$aMars 000103632 655__ $$aImage 000103632 655__ $$aTabular 000103632 7001_ $$aKnight, Abigail$$1https://orcid.org/0000-0001-6832-8190$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR 000103632 7001_ $$aMitra, Kaushik$$1https://orcid.org/0000-0001-9673-1032$$uStony Brook University$$4https://ror.org/05qghxh33$$5ROR 000103632 7001_ $$aCatalano, Jeffrey G.$$1https://orcid.org/0000-0001-9311-977X$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR 000103632 720__ $$aWashU Institute of Materials Science and Engineering$$uWashington University in St. Louis$$4https://ror.org/01yc7t268$$5ROR$$eResearchGroup$$7Organizational 000103632 720__ $$aArvidson, Raymond$$uWashington University in St. Louis$$1https://orcid.org/0000-0002-2854-0362$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal 000103632 720__ $$aCarpenter, Paul$$uWashington University in St. Louis$$1https://orcid.org/0000-0002-4639-3247$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal 000103632 720__ $$aFlynn, Elaine$$uWashington University in St. Louis$$1https://orcid.org/0000-0002-1164-0148$$4https://ror.org/01yc7t268$$5ROR$$eDataCollector$$7Personal 000103632 8564_ $$97496fc5e-31db-4353-bfa3-28c1043c5e2d$$s201446676$$uhttps://data.library.wustl.edu/record/103632/files/Knight_Iron_Oxide_Transformation_Products.zip$$ePublic$$206df18290376f82c749751e75bf5f5bf$$03 000103632 8564_ $$yReadme file$$91f7873be-1153-4251-829e-66ad85db700a$$s28197$$uhttps://data.library.wustl.edu/record/103632/files/readme_doi1079366rxs103632_Knight.txt$$ePublic$$202c26ba7c09d1405cfd4ae08dfc0bb12$$03 000103632 909CO $$ooai:data.library.wustl.edu:103632$$pdataset 000103632 974__ $$aMars 000103632 980__ $$aWashU Researcher Data