{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "PCMSC Science Data Coordinator", "hasEmail": "mailto:pcmsc_data@usgs.gov"}, "description": "Hydrothermal manganese oxide rocks were collected via dredge from the Tulaga Seamount, the flank of Ofu Island, and from Soso seamount in the Samoa hotspot  region offshore American Samoa during the KM0506 cruise aboard the R/V Kilo Moana in April of 2005. Rocks were subsampled at USGS and analyzed for mineralogy by x-ray diffraction. Powder x-ray diffraction data for the hydrothermal samples are provided here. Location information (longitude, latitude, and depth) for each sample is included in each Attribute Definition of this metadata file as well is in the co-released geochemistry data table.  We acknowledge the National Science Foundation for funding cruise KM0506 during which these rocks were collected (Grant OCE-0351437).", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P13VZZEY", "description": "Landing page for access to the data", "format": "XML", "mediaType": "application/http", "title": "Digital Data"}, {"@type": "dcat:Distribution", "description": "The metadata original format", "downloadURL": "https://data.usgs.gov/datacatalog/metadata/USGS.680ab34cd4be0258eebab6ba.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_680ab34cd4be0258eebab6ba", "keyword": ["CMHRP", "Coastal and Marine Hazards and Resources Program", "Global Ocean Mineral Resources", "Material Resources", "Mineral Resources", "Nonliving Resources", "Ofu Island", "PCMSC", "Pacific Coastal and Marine Science Center", "Pacific Ocean", "Physical/Chemical Features", "Territory of American Samoa", "U.S. Geological Survey", "USGS", "USGS:680ab34cd4be0258eebab6ba", "X-ray diffraction", "dredge sampling", "geoscientificInformation", "marine geology", "metallic mineral resources", "mineral resources", "mineralogical analysis", "mineralogy", "oceans"], "modified": "2026-01-22T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-170.24, -14.392, -169.434, -13.768", "theme": ["geospatial"], "title": "X-ray diffraction data for hydrothermal manganese oxide rocks from the Samoa hotspot region in the South Pacific Ocean collected during research expedition KM0506"}