{"accessLevel": "public", "bureauCode": ["010:12"], "contactPoint": {"@type": "vcard:Contact", "fn": "Ian Hillenbrand", "hasEmail": "mailto:ihillenbrand@usgs.gov"}, "description": "This U.S. Geological Survey (USGS) data release includes whole-rock major, trace, and rare earth element geochemical data, whole-rock and mineral Nd-Pb-Sr isotopic data collected by thermal ionization mass spectrometry (TIMS), and uranium-lead isotopic data collected by Sensitive High Resolution Ion Microprobe-Reverse Geometry (SHRIMP-RG) methods that characterize the Mountain Pass Rare Earth Element deposit, associated Mesoproterozoic igneous rocks, and their Paleoproterozoic host rocks in Arizona, California, and Nevada. SHRIMP-RG data were collected between 2013 and 2018. Sample collection and whole-rock geochemistry were carried out between 1981 and 2015.", "distribution": [{"@type": "dcat:Distribution", "accessURL": "https://doi.org/10.5066/P13NIQ3F", "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.67b625b7d34ed3b72cd43da3.xml", "format": "XML", "mediaType": "text/xml", "title": "Original Metadata"}], "identifier": "http://datainventory.doi.gov/id/dataset/USGS_67b625b7d34ed3b72cd43da3", "keyword": ["Arizona", "California", "Mojave desert", "Mountain Pass", "Nevada", "U.S. Geological Survey", "USGS:67b625b7d34ed3b72cd43da3", "carbonatite", "chemical analysis", "critical minerals", "geochemistry", "geochronology", "geoscientificInformation", "igneous rocks", "isotope geochemistry", "isotopic mapping", "metamorphic rocks", "rare earth elements"], "modified": "2025-03-12T00:00:00Z", "publisher": {"@type": "org:Organization", "name": "U.S. Geological Survey"}, "spatial": "-116.1771, 33.9578, -113.9055, 35.4959", "theme": ["geospatial"], "title": "Data Release of Geochemical, Geochronologic, and Isotopic Data for Proterozoic rocks from the Mountain Pass REE deposit and its host rocks, Arizona, California, and Nevada"}