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U-Pb age determinations of uraninite by electron microprobe analyses of ore samples from two solution-collapse breccia pipe uranium deposits, Grand Canyon region, northwest Arizona, USA This data release compiles the electron microprobe spot analyses of U, Th, and Pb concentrations in uraninite (U oxide) particles, and corresponding calculated age determinations, measured in samples of ore from two uranium-copper breccia pipe ore bodies, the Canyon (Pinyon Plain) and Hack II deposits. The U-rich samples that were analyzed typify the deposits hosted by solution-collapse breccia pipes in the Grand Canyon region of northwestern Arizona. Applying procedures outlined by Bowles (1990), the U, Pb, and Th measurements from each spot analysis were used to calculate a model age for the formation of each uraninite particle. The U, Pb, and Th analyses and calculated age determinations are provided as additional... Categories: Data; Tags: <1GB, Arizona, Canyon mine, Coconino County, GGGSC, All tags... Geology, Geophysics, and Geochemistry Science Center, Grand Canyon, Hack II mine, MRP, Mineral Resources Program, Mohave County, Tusayan, U.S. Geological Survey, USA, USGS, USGS Science Data Catalog (SDC), United States, University of Arizona Department of Mining and Geological Engineering, University of Arizona Lunar and Planetary Lab, breccia pipe, copper, economic geology, electron microprobe, energy resources, geology, geoscientificInformation, metallic mineral resources, mine, mineral resources, mineralogy, northwest Arizona, radiometric dating, uranium, Fewer tags Geochemical reanalysis of rock and sediment samples from the Lower Middle Fork of the Salmon River collected as part of the Idaho Primitive Area Studies in the 1960’s through 1980’s This is a geochemical data set from the reanalysis of 44 rock samples collected between 1966 and 1970, and 107 sediment samples collected in 1966 and 1967. These samples were collected by the U.S. Geological Survey for a study investigating the mineral resources of the Idaho Primitive Area (Cater et al., 1973). The samples are from the Lower Middle Fork of the Salmon River, including the tributaries of Big Creek, Camas Creek, Brush Creek, Wilson Creek, Waterfall Creek, Ship Island Creek, Reese Creek, Stoddard Creek, and Papoose Creek. The overall objective of this study is to characterize the regional impact of legacy mining for the Frank Church River of No Return Wilderness Area. Mary P. Rossillon (1981) explored... Categories: Data; Tags: Annie Creek, Atomic absorption analysis, Atomic emission spectroscopy, Beaver Creek, Big Creek, All tags... Big Ramey Creek, Biotite, Biotite-feldspar, Biotite-muscovite, Botha Creek, Brush Creek, Cabin Creek, Calc-silicate rock, Camas Creek, Camp Creek, Canyon Creek, Cave Creek, Challis intrusive, Challis volcanic group, Chemical analysis, Chlorite-biotite, Cliff Creek, Coin Creek, Copper Creek, Coxey Creek, Crooked Creek, Diorite, Eagan Creek, Fawn Creek, GGGSC, Geochemistry, Geochemistry, Geology, Geology, Geophysics, and Geochemistry Science Center, Glacial deposit, Gneiss, Granite, Granodiorite, Hand Creek, Holy Terror Creek, Hornblende-biotite, Idaho, Idaho Primitive Area, Jackass Creek, Lake Creek, Lapilli tuff, Latite, Lehmi group, Lewis Creek, Little Marble Creek, Little Ramey Creek, Logan Creek, Lower Middle Fork Salmon, MRP, Mass spectroscopy, Metasedimentary rock, Middle Fork Salmon River, Middle Fork terraces, Migmatite, Mineral Resources Program, Monumental Creek, Moore Creek, Mule Creek, Neoproterozoic intrusive, Paint Creek, Papoose Creek, Parker Mountain, Phyllite, Porphyry, Quartzite, Quartzose, Rainbow Creek, Reese Creek, Rhyolite, Rush Creek, Schistose, Seafoam, Sedimentology, Ship Island Creek, Smith Creek, Snowslide Creek, Stoddard Creek, Sunnyside tuff, Syenite, Telephone Creek, Threemile Creek, Thunder Mountain, Timm Creek, Trap Creek, USGS Science Data Catalog (SDC), United States, Waterfall Creek, Wildhorse Creek, Wilson Creek, Windermere supergroup, Woodtick Creek, Yellowjacket, Yellowjacket Creek, Fewer tags GIS Data for the Geologic Map of the Arlington Quadrangle, Carbon County, Wyoming This U.S. Geological Survey (USGS) data release for the geologic map of the Arlington quadrangle, Carbon County, Wyoming, is a Geologic Map Schema (GeMS, 2020)-compliant version of the printed geologic map published in USGS Geologic Map Quadrangle GQ-643 (Hyden and others, 1967). The database represents the geology for the 35,776-acre map plate at a publication scale of 1:24,000. References: Hyden, H.J., King, J.S., and Houston, R.S., 1967, Geologic map of the Arlington quadrangle, Carbon County, Wyoming: U.S. Geological Survey, Geologic Quadrangle Map GQ-643, scale 1:24,000; https://doi.org/10.3133/gq643. U.S. Geological Survey National Cooperative Geologic Mapping Program, 2020, GeMS (Geologic Map Schema) -... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Arlington quadrangle, Carbon County, Dutton Creek, Economic Geology, Foote Creek, All tags... GGGSC, GeMS, Geologic Map Schema, Geology, Geophysics and Geochemistry Science Center, Laramie, MRP, Medicine Bow Mountains, Medicine Bow National Forest, Mineral Resources Program, NGMDB, National Geologic Map Database, Rock Mountain, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), WY, Wyoming, bedrock geologic units, data services, geographic information systems, geologic maps, geology, geoscientificInformation, geospatial datasets, structural geology, Fewer tags GIS Data for Geologic Map of the Lake Owen Quadrangle, Albany County, Wyoming This U.S. Geological Survey (USGS) data release presents a digital database of geospatially enabled vector layers and tabular data transcribed from the geologic map of the Lake Owen quadrangle, Albany County, Wyoming, which was originally published as U.S. Geological Survey Geologic Quadrangle Map GQ-1304 (Houston and Orback, 1976). The 7.5-minute Lake Owen quadrangle is located in southeastern Wyoming approximately 25 miles (40 kilometers) southwest of Laramie in the west-central interior of southern Albany County, and covers most of the southern extent of Sheep Mountain, the southeastern extent of Centennial Valley, and a portion of the eastern Medicine Bow Mountains. This relational geodatabase, with georeferenced... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: "Information Sciences", "Structural Geology"], Albany County, GGGSC, GeMS, All tags... Geologic Map Schema, Geology, Geophysics and Geochemistry Science Center, Lake Owen, Laramie, MRP, Mineral Resources Program, NGMDB, National Geologic Map Database, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Wyoming, ["Economic Geology", bedrock geologic units, data services, geographic information systems, geologic maps, geology, geoscientificInformation, geospatial datasets, structural geology, Fewer tags Geochemistry and Environmental Tracer Data for Groundwater, Stream Water, and Soil and Sediment from North Quartz Creek, Colorado This U.S. Geological Survey (USGS) data release contains data from stream water, groundwater, and soil samples collected in 2019 and 2020 in the North Quartz Creek watershed in central Colorado. Fourteen streambank wells were installed in pairs at seven locations in August 2020 to capture the emerging groundwater from the left bank and right banks (relative to downstream-facing direction) and a synoptic sampling campaign was conducted to quantify metal contributions to the stream. A continuous, instream injection of sodium bromide (NaBr) was initiated at the head of the 5 km study reach several days prior to the synoptic sampling campaign and maintained throughout the duration of the study. Bromide concentrations... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service, Shapefile; Tags: "Environmental Health"], "Mineral Resources", "Water Quality", GGGSC, Geology, Geophysics, and Geochemistry Science Center, All tags... Gunnison County, Colorado, Gunnison National Forest, MRP, Mineral Resources Program, North Quartz Creek, Town of Pitkin, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), ["Geochemistry", abandoned mines and quarries, chemical tracer studies, environment, geochemistry, geochemistry, groundwater and surface-water interaction, groundwater geochemistry, inland waters, mine drainage, streambank well, sulfide-weathering, synoptic sampling, tracer injection, Fewer tags Airborne Electromagnetic and Magnetic Survey, Yellowstone National Park, 2016 - Minimally Processed Data Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of Yellowstone's myriad thermal features by constraining the geometry of the major hydrostratigraphic contacts and mapping regional-scale geologic structures. Data were acquired by SkyTEM ApS with the SkyTEM 312M time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer. The survey was... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: GGGSC, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Grand Canyon of the Yellowstone River, Hot Spring Basin Group, All tags... Lower Falls of the Yellowstone River, Lower Geyser Basin, MRP, Mammoth Hot Springs, Midway Geyser Basin, Mineral Resources, Mineral Resources Program, Mud Volcano, Norris Geyser Basin, Old Faithful, Park County, Pelican Valley, State of Wyoming, Teton County, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States of America, Upper Falls of the Yellowstone River, Upper Geyser Basin, Volcanology, Wyoming, Yellowstone Lake, Yellowstone National Park, Yellowstone National Park, Yellowstone River, aeromagnetic surveying, electromagnetic surveying, environment, geologic structure, geophysics, geoscientificInformation, geospatial datasets, geothermic, groundwater, hydrogeology, resistivity, Fewer tags Germanium Deposits in the United States This data release provides data for the single site in the United States (U.S.) that has public record of germanium (Ge) production. Germanium, which is currently classified as a critical mineral in the U.S., is also extracted as a byproduct from deposits in Alaska, Washington, and Tennessee. However, there is no public information that documents germanium production from these deposits. Current annual production of refined germanium is led by China at 85,000 tons, while estimates place U.S. reserves near 2,500 tons. Reported production of germanium in the U.S. is limited to one site, the Apex mine in Washington County, Utah. The Apex mine produced gallium (Ga) and germanium as primary products during the mid-1980s.... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Alaska, Apex mine, Bureau of Land Management (BLM), Department of the Interior (DOI), Dixie mine, All tags... Earth Mapping Resources Initiative (Earth MRI), Geology, Geophysics, and Geochemistry Science Center (GGGSC), Kipushi Cu-Pb-Zn, Mineral Resources Program (MRP), Tennessee, Tutsagubet Mining District, U.S. Geological Survey (USGS), USGS Mineral Deposit Database (USMIN), USGS Science Data Catalog (SDC), United States, Utah, Washington, Washington County, arsenic, copper, critical mineral, data release, economic geology, economy, gallium, geographic information systems, geoscientificInformation, geospatial datasets, germanium, iron, lead, location, metallic mineral resources, mine sites, mineral deposit areas, mineral deposits, mineral district, mineral resources, natural resource exploration, silver, surface dumps, underground workings, zinc, Fewer tags Record quality tables for the Mineral Resources Data System The tables in this data release provide measures of quality for each of 304,643 records in the Mineral Resources Data System (MRDS) database, located at https://mrdata.usgs.gov/mrds/ describing mineral resources worldwide but focusing on those located in the United States. One table provides the measures of quality, the other provides the overall record scores that may be used to sort records by overall quality. MRDS is distributed from the U.S. Geological Survey (USGS) in several different formats for the convenience of a variety of different users. For example a flattened version of the database is available in which the one-to-many relationships in MRDS are suppressed by combining them into a single field, resulting... Categories: Data; Tags: Mineral Resources, USGS Science Data Catalog (SDC), economic geology, geoscientificInformation, improvement of scientific data usability, All tags... metadata development, mine sites, mineral resources, scientific software, Fewer tags Argon and SHRIMP-RG Data for Magmatic Steam Alunite, Sericite, and Zircon from Alunite Ridge and Deer Trail Mountain, Marysvale, Utah Samples of vein-type magmatic-steam alunite were collected over several field seasons from five mines and prospects (L&N, Mt. Edna, Christmas, upper Mineral Products, and Close In) in the Alunite Ridge and Deer Trail Mountain area, Marysvale, Utah, as well as a sample from the Deer Trail mine workings from which sericite was separated. The magmatic-steam alunite and sericite were analyzed by the 40Ar/39Ar method to constrain the timing and duration of magmatic activity associated with the intrusion of two porphyry stocks beneath Alunite Ridge and Deer Trail Mountain. In addition, a sample of a highly altered rhyolitic quartz porphyry dike was collected from the upper Mineral Products mine, from which zircons were... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: "Mineral Resources"], 40Ar/39Ar, Alunite Ridge, Deer Trail Mountain, Denver Argon Geochronology Laboratory, All tags... GGGSC, Geology, Geophysics, and Geochemistry Science Center, MRP, Marysvale, Mineral Resource Program, Piute, SHRIMP-RG U/Pb, Stanford-USGS Micro Analysis Center, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Utah, ["Economic Geology", geochronology, geoscientificInformation, Fewer tags Updated gravity stations and anomaly compilation over Lake Superior New gravity compilation has been compiled for the Lake Superior region. The gravity compilation includes survey stations available from Natural Resources Canada, National Centers for Environmental Information (formerly National Geophysical Data Center), Minnesota Geological Survey, and U.S. Geological Survey. Individual databases were combined and duplicates were removed resulting in a database of 63,880 gravity stations. The gravity station data were reprocessed from observed gravity to simple Bouguer anomaly following standard methods that depend on the station type (for example, land, lake surface, or lake bottom observation) and used a reduction density of 2,670 kg/m3. The compilation provides a consistent dataset... Categories: Data; Types: Citation; Tags: Great Lakes, Lake Superior, Michigan, Minnesota, Ontario, All tags... Wisconsin, bouguer anomaly, free-air anomaly, geoscientificInformation, gravimeter measurement, gravitational field (earth), Fewer tags Indium deposits in the United States This U.S. Geological Survey (USGS) data release provides the descriptions of the only U.S. sites-including mining districts, mineral occurrences, and mine features-that have reported production and (or) resources of indium (In). This dataset contains the Bingham and West Desert deposits in Utah, and the Chino site in New Mexico. Indium is considered a critical and strategic mineral because of its use in the aerospace, defense, energy, and telecommunications sectors. The primary applications are flat-panel displays, and specialty alloys (Fortier and others, 2018). In 2021, the U.S. was 100 percent net import reliant on indium from China, Canada, Republic of Korea, and France (U.S. Geological Survey, 2022). Indium... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: BLM, Bureau of Land Management, DOI, Department of the Interior, Earth MRI, All tags... Earth Mapping Resources Initiative, Energy and Minerals Mission Area, GGGSC, Geology, Geophysics, and Geochemistry Science Center, MRP, Mineral Resources Program, New Mexico, Region 7: Upper Colorado Basin, Rocky Mountain Region, U.S. Geological Survey, USGS, USGS Mineral Deposit Database, USGS Science Data Catalog (SDC), USMIN, United States, Utah, copper, critical minerals, deposit, economic geology, economy, geographic information systems, geoscientificInformation, geospatial datasets, gold, indium, iron, lead, location, metallic mineral resources, mine sites, mineral deposit areas, mineral deposits, mineral district, mineral resources, mining district, molybdenum, natural resource exploration, open pit mine, platinum-group elements, rhenium, silver, underground workings, unspecified mine feature, zinc, Fewer tags Surface electrical resistivity tomography, magnetic, and gravity surveys in Redwell Basin and the greater East River watershed near Crested Butte, Colorado, 2017 Surface electrical resistivity tomography (ERT), time-domain electromagnetics (TEM), nuclear magnetic resonance (NMR), magnetics, and gravity data were acquired in 2016, 2017 and 2018 in the greater East River Watershed near Crested Butte Colorado with a focused effort in Redwell Basin. Five ERT profiles were acquired within Redwell Basin and Brush Creek to map geologic structure at depths up to 40 meters, depending on the subsurface resistivity, using the Advanced Geosciences, Inc. SuperSting R8 resistivity meter. Approximately ten kilometers of total field magnetics data were acquired with a Geometrics G-858 cesium vapor magnetometer that detects changes in deep (tens of meters to kilometers) geologic structure... Categories: Data; Types: Downloadable, Map Service, OGC WFS Layer, OGC WMS Layer, Shapefile; Tags: Brush Creek, Colorado, Crested Butte, East River, Environmental Health, All tags... GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Geophysics, Gothic, Gunnison County, Hydrology, MRP, Mineral Resources, Mineral Resources Program, Mount Emmons, Oh-be-joyful, Redwell Basin, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Water Resources, bouguer anomaly, electrical resistivity tomography, environment, free-air anomaly, geophysics, geoscientificInformation, geospatial datasets, gravimeter measurement, gravitational field (earth), gravity, groundwater, hydrogeology, magnetic anomaly maps, magnetic field, magnetic surveying, magnetics, resistivity, water resources, Fewer tags Electron microprobe analyses of amphibole, pyroxene, and carbonate minerals from the Ironwood Iron-Formation, Gogebic Iron Range, Wisconsin, USA These data comprise chemical analyses in weight percent of oxides, as well as chlorine and fluorine, conducted using a JEOL JXA-8900 electron microprobe analyzer (EPMA) on amphiboles, pyroxenes, and carbonates in the Ironwood Iron-Formation. Categories: Data; Tags: Ashland County, Iron County, Iron formation, Wisconsin, metamorphism (geological), All tags... mineral deposits, particle-beam spectroscopy, Fewer tags Graphite deposits in the United States This U.S. Geological Survey (USGS) data release provides the descriptions of 10 U.S. sites that include mineral regions, mineral occurrences, and mine features that contain enrichments of graphite. To be included in this data release, sites must have a contained resource and (or) past production of more than 1,000 metric tons of graphite, which is approximately 3 percent of the average annual U.S. consumption of graphite from 2016 through 2020. Sites in this dataset occur in Alaska, Alabama, Colorado, Montana, New York, Pennsylvania, and Texas. There are known graphite occurrences in California, Connecticut, Georgia, Michigan, New Hampshire, New Jersey, North Carolina, Rhode Island, and Wyoming that have not been... Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: 37f - Disseminated flake graphite, 37g - Graphite veins, Alabama, Alaska, BLM, All tags... Bureau of Land Management, Colorado, Coosa, DOI, Department of the Interior, Earth MRI, Earth Mapping Resources Initiative, Energy and Minerals Mission Area, GGGSC, Geology, Geophysics, and Geochemistry Science Center, Graphite Creek, MRP, Mineral Resources Program, Montana, New York, Pennsylvania, Region 7: Upper Colorado Basin, Southwestern Graphite, Texas, U.S. Geological Survey, USGS, USGS Mineral Deposit Database, USGS Science Data Catalog (SDC), USMIN, United States, copper, critical minerals, deposit, deposit type, economic geology, economy, geographic information systems, geoscientificInformation, geospatial datasets, gold, graphite, lead, location, metallic mineral resources, mine sites, mineral deposit areas, mineral deposits, mineral district, mineral resources, mining district, natural resource exploration, open pit mine, silver, underground workings, unspecified mine feature, Fewer tags Airborne Electromagnetic Survey Processed Data and Models Data Release, Yellowstone National Park, Wyoming, 2016 Airborne electromagnetic (AEM) and magnetic survey data were collected during November and December 2016 along 4,212 line-kilometers over Yellowstone National Park, Wyoming. The survey was conducted as part of a study of the subsurface geologic structure and geothermal and groundwater resources of Yellowstone National Park. The survey was designed to image the subsurface plumbing of Yellowstone's myriad thermal features by constraining the geometry of the major hydrostratigraphic contacts and mapping regional-scale geologic structures. Data were acquired by SkyTEM ApS with the SkyTEM 312M time-domain helicopter-borne electromagnetic system together with a Geometrics G822A cesium vapor magnetometer. The survey was... Categories: Data; Tags: GGGSC, Geology, Geophysics, and Geochemistry Science Center, Grand Canyon of the Yellowstone, Hot Spring Basin Group, Lower Falls of the Yellowstone River, All tags... Lower Geyser Basin, MRP, Mammoth Hot Springs, Midway Geyser Basin, Mineral Resources Program, Mud Volcano, Norris Geyser Basin, Old Faithful, Park County, Pelican Valley, Teton County, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), United States of America, Upper Falls of the Yellowstone River, Upper Geyser Basin, Wyoming, Yellowstone Lake, Yellowstone National Park, Yellowstone River, aeromagnetic surveying, electromagnetic surveying, environment, geologic structure, geophysics, geoscientificInformation, geospatial datasets, geothermics, groundwater, hydrogeology, resistivity, Fewer tags Chemistry and Flow Data from Headwater Streams Draining Hydrothermally Altered Areas in Colorado This U.S. Geological Survey (USGS) data release contains stream water chemistry and streamflow data collected in late August and early September, 2021 from 28 sites located throughout Colorado, USA. The sampled streams all drain high-elevation mountain watersheds in areas where the bedrock is hydrothermally altered and contains abundant sulfide minerals. Most sampled streams are therefore affected by natural acid-rock drainage. All sites had been sampled in prior years so that the 2021 data could be used to evaluate potential changes in stream water chemistry in recent decades. Streamflow was also quantified at most sites using data from a sodium chloride slug addition wherein specific conductivity readings were... Categories: Data; Tags: Environmental Health, GGGSC, Geochemistry, Geology, Geophysics, and Geochemistry Science Center, Hydrology, All tags... MRP, Mineral Resources, Mineral Resources Program, State of Colorado, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), Water Quality, dissolved metals, environment, geochemistry, geochemistry, geoscientificInformation, inland waters, sulfide-weathering, water chemistry, water quality, Fewer tags Magnetic susceptibility measurements on hydrothermally altered rocks in the Silverton caldera, southwest Colorado The U.S. Geological Survey (USGS) collected magnetic susceptibility measurements on rock outcrops to help understand causative sources of magnetic survey anomalies in the Silverton caldera region, southwest Colorado. A total of 1,400 measurements of magnetic susceptibility from 87 locations have been conducted on Paleogene volcanic and plutonic rocks that have been hydrothermally altered. Magnetic susceptibility measurements were taken using an SM30 handheld instrument manufactured by ZH Instruments. The measurements aid in understanding the geology and potential mineral resources in the Silverton caldera. Previously mapped lithologies and alteration assemblages were used to guide measurement locations. Multiple... Categories: Data; Tags: "Geophysics", "Mineral Resources"], Animas River, Bonita Peak Mining District, Cement Creek, All tags... Colorado, GGGSC, Geology, Geophysics, and Geochemistry Science Center, MRP, Mineral Creek, Mineral Resource Program, San Juan County, San Juan Mountains, Silverton, Silverton Caldera, Southern Rocky Mountains Volcanic Field, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), ["Economic Geology", geoscientificInformation, magnetic susceptibility, magnetic susceptibility analysis, maps and atlases, Fewer tags Strontium isotopic data from the Mount Emmons-Redwell area, Crested Butte, Colorado This U.S. Geological Survey (USGS) data release contains strontium isotopic data from water and rock samples collected between 2000 and 2019 from the Mount Emmons area, central Colorado. The data include strontium isotopic compositions, 87Sr/86Sr, for surface- and groundwater samples collected from streams, springs, draining mines, piezometers, and drill holes and for leachates of rock samples collected from surface outcrops and drill core. Rock sample isotopic data are results from two-step leaching of samples from various lithologies within the study area. Drill core rock and water samples were collected from holes drilled in 2017 and 2018 as part of a U.S. Geological Survey and Department of Energy investigation... Categories: Data; Tags: Colorado, Crested Butte, Economic Geology, Elk Mountains, Geology, Geophysics, and Geochemistry Science Center (GGGSC), All tags... Gunnison County, Mineral Resources Program (MRP), Mount Emmons, Redwell Basin, USGS Science Data Catalog (SDC), geochemistry, isotope geochemistry, mineral resources, Fewer tags Geochemical data for stream water samples from streams around the Pogo Deposit and Black Mountain Au occurrences, Big Delta quadrangle, Alaska, 2021 This data release is the result of a hydrogeochemical sampling campaign during summer 2021 to investigate whether high resolution geochemical analysis of waters for element chemistry can be used as an exploration tool for identifying gold-rich occurrences in parts of the Big Delta B-1 and B-2 quadrangles, within the Yukon-Tanana Upland region, Alaska. Historical USGS conventional stream sediment geochemical data yielded variable indications of geochemical anomalies in conventional stream sediment geochemistry results, probably related to relative exposure of mineralized rock. Previous studies of waters in the Pogo area (western part of current study) utilized conventional analytical methods not capable of measuring... Categories: Data; Tags: "Geochemistry", "Mineral Resources"], Alaska, Big Delta, GGGSC, All tags... Geology, Geophysics, and Geochemistry Science Center, HR-ICP-MS, IC, MRP, Mineral Resources Program, Southeast Fairbanks, U.S. Geological Survey, USGS, USGS Science Data Catalog (SDC), ["Economic Geology", geochemistry, geoscientificInformation, high resolution inductively coupled plasma mass spectrometry, ion chromatography, metallic mineral resources, mineral deposits, stream sediment geochemistry, stream water geochemistry, unconsolidated deposits, Fewer tags