Filters: Tags: carbonatite (X) > Types: Map Service (X)

Filters Date Range Past year (1) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions Shapefile (2) Types Downloadable (2) OGC WFS Layer (2) OGC WMS Layer (2) Shapefile (2) Contacts Philip L Verplanck Danielle A Olinger Geology, Geophysics, and Geochemistry Science Center U.S. Geological Survey U.S. Geological Survey - ScienceBase More... Categories Data (2) Tag Types Theme (2) Place (2) USGS Scientific Topic Keyword (2) Harvest Set (2) Subject (1) Tag Schemes none (1) None (2) USGS Thesaurus (2) Common Geographic Areas (1) Common geographic areas (1) View Results as: JSON ATOM CSV

Geochemical data for the Elk Creek alkaline complex, southeast Nebraska This U.S. Geological Survey (USGS) data release contains analytical data from a suite of rock and mineral samples collected from drill core within the Elk Creek alkaline complex, southeast Nebraska. This complex hosts the Elk Creek carbonatite, a multilithologic carbonatite enriched in niobium, rare earth elements (REEs), scandium, and titanium. Mineralized carbonatites are the world’s primary source of rare earth elements (REEs) and niobium, but only a few deposits are responsible for meeting the current demand of these critical elements such that there is increasing interest in other carbonatites that have the potential to help meet future demands. This study focuses on the Elk Creek carbonatite, the largest... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Economic Geology, Elk Creek, Elk Creek carbonatite, Geochemistry, Johnson County, All tags... Mineral Resources, Nebraska, Pawnee County, USGS Science Data Catalog (SDC), carbonatite, economic geology, geochemistry, geology, mineral resources, niobium, rare earth elements, Fewer tags Carbonatite whole-rock and calcite geochemistry from the Bear Lodge alkaline complex, Wyoming and Mountain Pass mine, California Whole-rock and calcite geochemical data are reported for twelve carbonatite samples collected from the Bear Lodge alkaline complex, Wyoming and from the Mountain Pass mine, California. Calcite geochemical data was collected using electron microprobe and laser ablation inductively coupled plasma-mass spectrometry (LA-ICP-MS) analyses. Reported whole-rock data was measured by inductively coupled plasma-optical emission spectrometry (ICP-OES), inductively coupled plasma-mass spectrometry (ICP-MS), ion selective electrode-fluoride (ISE-F), and wavelength dispersive X-ray fluorescence (WDXRF). Geochemical data are presented in downloadable .csv files. Spatial data of sample collection sites are provided as polygons in... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Bear Lodge Mountains, Black Hills, California, California, Carbonatite, All tags... Crook County, Economic Geology, GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, ICP-MS, ICP-OES, ISE-F, Inductively coupled plasma-mass spectrometry, Inductively coupled plasma-optical emission spectrometry, Ion selective electrode-fluoride, LA-ICP-MS, Laser ablation inductively coupled plasma-mass spectrometry, MRP, Microprobe, Mineral Resources Program, Mountain Pass mine, REE, Rare earth elements, San Bernardino County, USGS, USGS Science Data Catalog (SDC), United States Geological Survey, WDXRF, Wavelength dispersive X-ray fluorescence, Wyoming, Wyoming, geochemistry, rare earth elements, Fewer tags