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Chemistry, morphology, modal mineralogy, and photomicrographs of amphiboles and other minerals in the Ironwood Iron-Formation, Gogebic Iron Range, Wisconsin, USA The Ironwood Iron-Formation, part of the Gogebic Iron Range in Wisconsin, is a Paleoproterozoic Superior-type banded iron formation (BIF) with substantial iron resource potential. The development of a Mesoproterozoic contact metamorphic aureole related to the emplacement of the Mellen Intrusive Complex resulted in the production of a variety of silicate minerals in the western portion of the Ironwood Iron-Formation, including amphibole, pyroxene, and olivine. The presence of amphibole minerals, some of which occur in a fibrous habit, has complicated development of this resource due to potential human health impacts. This data release provides information related to amphibole and other minerals in order that commercial,... Categories: Data, Data Release - Revised; Tags: Mineralogy, USGS Science Data Catalog (SDC) Rare Earth Element Occurrences in the United States Version 4.0 of this data release provides descriptions of more than 200 mineral districts, mines, and mineral occurrences (deposits, prospects, and showings) within the United States that are reported to contain substantial enrichments of the rare earth elements (REEs). These mineral occurrences include mined deposits, exploration prospects, and other occurrences with notable concentrations of the REEs. The inclusion of a particular mineral occurrence in this database is not meant to imply that it has economic potential. Rather, these occurrences were included to capture the distribution and characteristics of the known, reported REEs deposits in the United States, which are diverse in their geology and resource... Categories: Data, Data Release - Revised; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alaska, Arizona, Arkansas, BLM, Bureau of Land Management, All tags... California, Colorado, Earth MRI, Earth Mapping Resources Initiative, Florida, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Georgia, Idaho, Illinois, MRP, Mineral Resources Program, Mineralogy, Missouri, Montana, Nebraska, Nevada, New Jersey, New Mexico, New York, North Carolina, South Carolina, Tennessee, Texas, U.S. Geological Survey, USGS, USGS Mineral Deposit Database, USGS Science Data Catalog (SDC), USMIN, United States, Virginia, Wyoming, cerium, critical mineral, dysprosium, economic geology, economy, erbium, europium, gadolinium, geographic information systems, geoscientificInformation, geospatial datasets, holmium, lanthanum, location, lutetium, mine, mine sites, mineral commodity, mineral deposit areas, mineral deposit type, mineral deposits, mineral occurrence, mineral resources, natural resource exploration, neodymium, open pit mine, praseodymium, rare earth elements, samarium, surface workings, terbium, thulium, underground workings, ytterbium, yttrium, Fewer tags Electron microprobe analyses of feldspars and petrographic, geochemical, and geochronologic data from the Hawkeye Granite Gneiss and Lyon Mountain Granite Gneiss in the Adirondacks of New York (ver. 2.0, May 2023) Iron oxide-apatite (IOA) deposits of the Adirondack Mountains of New York locally contain elevated REE concentrations (e.g. Taylor and others, 2019). Critical to evaluating resource potential is understanding the genesis of the IOA deposits that host the REE-rich minerals. As part of this effort, the U.S. Geological Survey (USGS) is conducting bedrock geologic mapping, geochronology, geochemistry, and geophysics in the region. Published and ongoing research demonstrates the spatial association of IOA deposits with the Lyon Mountain Granite Gneiss (LMG), so understanding the relationship of the LMG to the IOA deposits is important for resource evaluation—however the age and origin of the LMG remain contentious. As... Categories: Data, Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Adirondack Mountains, Dannemora, Hawkeye, Keene, Lyon Mountain, All tags... Lyonsdale, New York, USGS Science Data Catalog (SDC), chemical analysis, electron probe microanalysis, geochemistry, geoscientificInformation, mineral resources, mineralogy, Fewer tags Imaging spectrometer reflectance data, mineral predominance map, and white mica wavelength position map, Nabesna Quadrangle, Alaska Approximately 1,900 square kilometers of imagery were collected from July 14 to July 21, 2014 using a HyMap™ sensor (Cocks and others, 1998) mounted on a modified Piper Navajo aircraft. The survey area covered parts of the Wrangell and Nutzotin Mountains in the eastern Alaska Range near Nabesna, Alaska. The aircraft was flown at an altitude of approximately 5,050 meters (m) (3,480 m above the mean ground surface elevation of 1570 m) resulting in average ground spatial resolution of 6.7 m. HyMap measured reflected sunlight in 126 narrow channels that cover the wavelength region of 455 to 2,483 nanometers (nm). Data were delivered by the operators of the sensor (HyVista Corp., Australia) in units of radiance (Kokaly... Categories: Data Release - Revised; Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Alaska, Alaska, Alaska Range, Bond Creek, Canada, All tags... ENVI, Environment for Visualizing Images, HyMap, MRP, Mineral Resources Program, Mineralogy, Nabesna, Nabesna A-2 quadrangle, Nabesna A-4 quadrangle, Nabesna B-4 quadrangle, Nikonda Creek, Nutzotin Mountains, Orange Hill, Remote Sensing, SWIR, USGS Science Data Catalog (SDC), VNIR, Valdez-Cordova, Wrangell Mountains, Wrangell–Saint Elias National Preserve, Yukon Territory, economy, geoscientificInformation, hyperspectral imaging, imageryBaseMapsEarthCover, imaging spectroscopy, infrared imaging, mineral resources, mineralogy, remote sensing, shortwave infrared, spectroscopy, visible-near infrared, Fewer tags Alaska Geochemical Database Version 3.0 (AGDB3) including best value data compilations for rock, sediment, soil, mineral, and concentrate sample media The Alaska Geochemical Database Version 3.0 (AGDB3) contains new geochemical data compilations in which each geologic material sample has one best value determination for each analyzed species, greatly improving speed and efficiency of use. Like the Alaska Geochemical Database Version 2.0 before it, the AGDB3 was created and designed to compile and integrate geochemical data from Alaska to facilitate geologic mapping, petrologic studies, mineral resource assessments, definition of geochemical baseline values and statistics, element concentrations and associations, environmental impact assessments, and studies in public health associated with geology. This relational database, created from databases and published... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: AGDB, AMRAP, Alaska Geochemical Database, Alaska Mineral Resource Assessment Program, Alaska Range, All tags... Aleutian Range, Alexander Archipelago, Brooks Range, Chugach Mountains, Geochemistry, Heavy Mineral Program, Kuskokwim Mountains, Mineralogy, Praseodymium, Seward Peninsula, USGS Science Data Catalog (SDC), Wrangell Mountains, aluminum, analytical chemistry, antimony, arsenic, ash, barium, beryllium, bismuth, boron, bound or essential water, bromine, bulk density, cadmium, calcium, calcium carbonate, carbon, carbon dioxide, carbonate carbon, cerium, cesium, chemical analysis, chlorine, chromium, cobalt, copper, dysprosium, environmental geochemistry, erbium, europium, exploration geochemistry, f02013=Eastern Aleutian Islands, f02016=Western Aleutian Islands, fOC4101=Gulf of Alaska, fOC4102=Bering Sea, fUS02=Alaska, fUS=United States, ferric iron, ferrous iron, fluorine, gadolinium, gallium, geochemical data, geochemistry, geoscientificInformation, germanium, gold, hafnium, heavy-mineral concentrate chemistry, holmium, hydrogen, indium, iodine, iridium, iron, lanthanum, lead, lithium, loss on ignition, lutetium, magnesium, manganese, mercury, mineral resources, mineralogical data, mineralogy, moisture or nonessential water, molybdenum, neodymium, nickel, niobium, nitrate, nitrogen, organic carbon, osmium, pH, palladium, phosphorus, platinum, potassium, powder density, pyritic sulfur, rhenium, rhodium, rock chemistry, rubidium, ruthenium, samarium, scandium, sediment chemistry, selenium, silicon, silver, sodium, soil chemistry, strontium, sulfate, sulfide, sulfur, tantalum, tellurium, terbium, thallium, thorium, thulium, tin, titanium, total water, tungsten, uranium, vanadium, ytterbium, yttrium, zinc, zirconium, Fewer tags Geochemical analyses of surface water, groundwater and springs surrounding Mount Emmons near Crested Butte, Colorado (ver. 2.0, September 2020) The U.S. Geological Survey (USGS), Colorado Division of Reclamation, Mining and Safety (DRMS), and Coal Creek Watershed Coalition (CCWC) working independently, have intermittently collected samples of surface- and groundwater and springs around Mount Emmons, near Crested Butte, Colorado. This data release is a compilation of the comprehensive inorganic chemical analyses conducted as a result of that sampling. The earliest samples were collected in the summer of 1997, and subsequent sampling has continued through 2019. Water samples collected in the Elk Creek basin, sample identifiers starting with EC, have been previously published in three U.S. Geological Survey reports; Verplanck and others, 2007, Manning and... Categories: Data, Data Release - Revised; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: CWCC, Coal Creek, Coal Creek Watershed Coalition, Colorado, Colorado Division of Reclamation, Mining and Safety, All tags... Crested Butte, DOE, DRMS, Daisy Mine, Department of Energy, Elk Creek, GGGSC, Geology, Geophysics, and Geochemistry Science Center, ICP-AES, ICP-MS, Independence Basin, Lake Irwin, MRP, Mineral Resources Program, Mount Emmons, Oh-be-joyful Creek, Peeler Basin, Red Lady Basin, Redwell Basin, Slate River, Splains Gulch, Standard Mine, State of Colorado, USGS Science Data Catalog (SDC), Wildcat Creek, Wolverine Basin, alteration, cadmium, chemical analysis, economy, geoscientificInformation, inductively coupled plasma mass spectrometry, inductively coupled plasma-atomic emission spectrometry, lead, metallic mineral resources, mineral deposits, mineralogy, water chemistry, water sampling, zinc, Fewer tags