Nora K Foley

Chemical alteration index values and rare earth element data and expected ranges for regolith overlying the Stewartsville pluton, Virginia

This dataset contains whole major element geochemical data used to calculate values of the chemical alteration index (CIA), data for Nd, Sm, Y, and total REE and expected ranges for total REEY for samples of regolith overlying the Stewartsville pluton, Virginia. The southeastern United States was first identified as prospective for regolith-hosted REE deposits based on the recognition that the region has been subjected to a long history of intense differential chemical weathering and saprolitization, comparable to that which formed the REE clay deposits of South China and Southeast Asia since the break-up of Pangea (Foley and Ayuso, 2013). Foley et al. (2014) established that due to their inherent high concentrations...

Categories: Data; Tags: Appalachian, Geochemistry, Mineral Resources, Southeastern United States, USGS Science Data Catalog (SDC), All tags... Virginia, geochemistry, mineral resources, regolith, Fewer tags

GIS and Data Tables for Focus Areas for Potential Domestic Nonfuel Sources of Rare Earth Elements

In response to Executive Order 13817 of December 20, 2017, the U.S. Geological Survey (USGS) coordinated with the Bureau of Land Management (BLM) to identify 35 nonfuel minerals or mineral materials considered critical to the economic and national security of the United States (U.S.). Acquiring information on possible domestic sources of these critical minerals is the basis of the USGS Earth Mapping Resources Initiative (Earth MRI). The program, which partners the USGS with State Geological Surveys, federal agencies, and the private sector, aims to collect new geological, geophysical, and topographic (lidar) data in key areas of the U.S. to stimulate mineral exploration and production of critical minerals. The first...

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alabama, Alaska, Arizona, Arkansas, California, All tags... Colorado, Delaware, District of Columbia, Earth MRI, Earth Mapping Resources Initiative, Florida, Georgia, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, MRP, Maine, Maryland, Michigan, Mineral Resources Program, Mineralogy, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, North Dakota, Ohio, Oklahoma, Pennsylvania, South Carolina, South Dakota, Tennessee, Texas, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States, Utah, Vermont, Virginia, West Virginia, Wisconsin, Wyoming, critical mineral, economic geology, geospatial datasets, heavy rare earth elements, iron-oxide apatite, iron-oxide copper gold, lanthanide series elements, light rare earth elements, location, mineral deposit system, mineral deposit type, mineral deposits, mineral resources, phosphate, rare earth elements, scandium, yttrium, Fewer tags