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Abstract The isotopic composition of Pb in fugitive dust suspended by a vehicle from 13 unsurfaced roads in Missouri was measured to identify the source of Pb within an established long-term mining area. A three end member model using 207Pb/206Pb and concentration as tracers resulted in fugitive dust samples plotting in the mixing field of well characterized heterogeneous end members. End members selected for this investigation include the 207Pb/206Pb for 1) a Pb-mixture representing mine tailings, 2) aerosol Pb impacted soils within close proximity to the Buick secondary recycling smelter, and 3) an average of soils, rock cores and drill cuttings representing the background characteristics. Aqua regia total concentrations...
Categories: Data;
Types: Citation,
Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Iron, Reynolds, Dent, Washington, and Crawford Counties,
Iron, Reynolds, Dent, Washington, and Crawford Counties,
Pb apportionment,
Pb apportionment,
Pb isotopic ratios, All tags...
Pb isotopic ratios,
Road Dust,
Road Dust,
Sequential extraction,
Sequential extraction,
USGS Science Data Catalog (SDC),
Unsurfaced roads,
Unsurfaced roads,
Viburnum Trend Mining District,
Viburnum Trend Mining District, Fewer tags
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In situ geochemical data were obtained for pyrite crystals and native gold from two distinct vein sets in the Grass Valley gold district, California. Samples of the N-S veins were collected underground at the Empire Mine State Historic Park and samples of the E-W veins were collected from drill core provided by the Idaho-Maryland Mining Corporation in 2008. These geochemical data were analyzed to better understand paragenesis of quartz veins in orogenic gold deposits. Data includes electron probe microanalysis (EPMA) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) chemistry and LA-ICP-MS sulfur isotope values for pyrite crystals, and EPMA geochemistry of native gold grains found within...
Categories: Data;
Tags: California,
EPMA,
Geochemistry,
Grass Valley,
LA-ICP-MS, All tags...
Mineralogy,
USGS Science Data Catalog (SDC),
chemical analysis,
electron probe microanalysis,
geochemistry,
geoscientificInformation,
gold,
mineralogy,
rock,
rock geochemistry, Fewer tags
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This data release includes sampling location data; field-collected stream attribute data; laboratory-analyzed chemistry concentrations (total mercury, methyl mercury) and isotopic composition (total mercury, carbon, and nitrogen) for stream biota (seston, periphyton, benthic insects, emerging adult insects, riparian spiders, and fish); density, body length, and taxonomic information for benthic insects; and density, biomass, and taxonomic information for emerging adult aquatic insects for biota sampled from stream reaches up and downstream of an historical mercury mine site. Sampling took place during summer low-flow conditions in 2015 and 2016. Stream reaches were located on USFS land near the Cinnabar Mine Site...
Tags: Aquatic Biology,
Environmental Health,
Idaho,
Nez Perce Tribe,
USGS Science Data Catalog (SDC), All tags...
Yellow Pine,
aquatic insects,
aquatic-terrestrial linkages,
biomagnification,
biota,
food web,
macroinvertebrates,
mercury contamination,
mine drainage,
riparian ecosystems,
riparian spiders,
spiders,
sugar creek, Fewer tags
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Water and sediment samples were collected by the U.S. Geological Survey in cooperation with the U.S. Environmental Protection Agency at or near baseflow conditions from 2015-2017 in the East Fork South Fork Salmon River watershed near Yellow Pine, Valley County, Idaho. Soil, rock and tailings samples were collected in June 2015. Sampling focused on Cinnabar Creek, which flows through the Cinnabar mine site, and Sugar Creek, with additional sites selected to place the data into a larger watershed context. Grab samples were taken of the snowpack in January 2017. The water, soil, sediment, and rock samples were as described and the results are presented as separate water and solid data sets.
Categories: Data;
Types: Map Service,
OGC WFS Layer,
OGC WMS Layer,
OGC WMS Service;
Tags: Cinnabar Creek,
East Fork South Fork Salmon River,
Environmental Health,
Geochemistry,
Idaho, All tags...
Sugar Creek,
USGS Science Data Catalog (SDC),
Valley County,
Water Quality,
Yellow Pine Mine,
abandoned mines and quarries,
arsenic,
chemical analysis,
geochemistry,
mercury,
methylmercury,
mine drainage,
mineral deposits,
mining water use,
non-point source pollution,
soil chemistry,
unconsolidated deposits,
water chemistry,
water quality,
water sampling, Fewer tags
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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
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