{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Thomas Morgan", "hasEmail": "mailto:thomas.h.morgan@nasa.gov"}, "description": "The Moessbauer spectrometers on the two Mars Exploration Rovers identified Fe-bearing phases and measured the  relative abundance of Fe (percentage of total Fe) according to  oxidation state(e.g., Fe2+ and Fe3+), coordination state (e.g.,  octahedrally coordinated), and specific Fe-bearing phases (e.g.,  percentage of total Fe associated with olivine) at Meridiani Planum  (Opportunity) and Gusev Crater(Spirit).", "identifier": "urn:nasa:pds:context_pds3:data_set:data_set.mer1-mer2-m-mb-5-fe-abundance-v1.0_aurc-4ayx", "issued": "2021-05-21", "keyword": ["mars", "mars-exploration-rover"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=MER1%2FMER2-M-MB-5-FE-ABUNDANCE-V1.0", "license": "http://www.usa.gov/publicdomain/label/1.0/", "modified": "2025-07-17", "programCode": ["026:005"], "publisher": {"@type": "org:Organization", "name": "National Aeronautics and Space Administration"}, "references": ["https://pds.nasa.gov"], "theme": ["Earth Science"], "title": "MER MARS MOESSBAUER RELATIVE FE\n                                     ABUNDANCE V1.0"}