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Geochemistry

Study of the distribution of chemical elements and natural compounds on the earth and in the atmosphere and the chemical processes that affect the earth.
This category is also used for chemistry (Earth sciences).


Results listed by similarity [list alphabetically]
Geochemistry of magnetite from porphyry Cu and skarn deposits in the southwestern United States

Hydrothermal orebodies and their host rocks are characterized by compositional variations in magnetite. Minor and trace element data for hydrothermal and igneous magnetite are compared with an unmineralized magnetite-series granodiorite in southwest Japan

Geochemistry of rock samples collected from the Iron Hill carbonatite complex, Gunnison county, Colorado

A study conducted collected 57 surface rock samples from nine types of intrusive rock to reexamine the chemistry and metallic content of the major rock units of the Iron Hill complex

Geochemistry of sediments in the US from the PLUTO database

Geochemical data for unconsolidated sediments (stream sediments, lake sediments, etc.) collected in the US and analyzed by the USGS. These data were originally entered in the PLUTO database, which is now merged into the National Geochemistry Database.

Geochemistry of soils from the San Rafael Valley, Santa Cruz County, Arizona

Surficial geochemical methods used to identify subsurface mineral deposits covered by alluvium. Can a geophysical anomaly, interpreted as a buried granite pluton, be discerned from the geochemical characteristics of overlying Quaternary sediments?

Geochemistry of soils in the US from the PLUTO database

Geochemical data for soils collected in the United States and analyzed by the USGS. The data were originally entered into the in-house PLUTO database. This is a subset of DDS-47.

Geochemistry of soils in the US from the RASS database

Geochemical data for soils collected by USGS personnel and analyzed by the USGS. These data were originally entered into the Rock Analysis Storage System (RASS), a database that is now merged into the National Geochemistry Database.

Geochemistry of stream sediments in the US from the NURE-HSSR database

National-scale geochemical analysis of stream sediments and soils in the US collected and analyzed under the National Uranium Resource Evaluation program.

Geochemistry of unconsolidated sediments in the US from the RASS database

Geochemical data for unconsolidated sediments (stream sediments, lake sediments, etc.) collected by USGS personnel and analyzed by USGS. These data were part of the Rock Analysis Storage System and are now merged into the National Geochemistry Database.

Geochemistry of water samples in the US from the NURE-HSSR database

National-scale geochemical analysis of water samples in the US collected and analyzed under the National Uranium Resource Evaluation program.

Geochemistry, geochronology, mineralogy, and geology suggest sources of and controls on mineral systems in the southern Toquima Range, Nye County, Nevada

Geochemical analysis of rock samples in DBF tables from the PLUTO database. Maps are provided in PDF only.

Bedrock and soil geochemistry from Voyageurs National Park, Minnesota

Analyses to establish the background and baseline geochemistry for bedrock and soil in the region, and to determine terrestrial mercury sources and sinks in the park

Bedrock soil and lichen geochemistry from Isle Royale National Park, Michigan

Geochemical analyses conducted as part of a larger study of the Midcontinent Rift in the Lake Superior region.

Depositional Setting and Geochemistry of Phosphorites and Metalliferous Black Shales in the Carboniferous-Permian Lisburne Group, Northern Alaska

The purpose of this paper is to present new sedimentological, paleontological, and geochemical data that allow us to define the geographic and stratigraphic extent and depositional setting of these temporally unusual phosphorites.

Environmental characteristics of the abandoned Greenwood Mine area, Prince William Forest Park, Virginia; implications for mercury geochemistry

Water quality data for the area include pH, dissolved oxygen, alkalinity, total acid soluble and dissolved major and trace element concentrations for sites around the mine workings.

Geology, geochemistry and geophysics of sedimentary rock-hosted Au deposits in P.R. China

Includes data on mineral deposit locations and geochemical analyses

Geology, geochemistry, and genesis of the Greens Creek massive sulfide deposit, Admiralty Island, southeastern Alaska

This metal ore deposit formed over a period of time in which its tectonic setting was changing, consequently it shows a range of characteristics typical of several different types of deposits. Rock geochemistry data are provided in tabular form.

Geology, geochemistry, and geophysics of the Fry Canyon uranium/copper project site, southeastern Utah - Indications of contaminant migration

Chemical analyses of water and sediment samples, images depicting resistivity.

Lithogeochemistry of mineralized and altered rock samples from the northern Talkeetna Mountains, south-central Alaska

Chemical analysis of 201 samples of rocks thought to be altered or mineralized in an area containing numerous mines.

Mercury geochemistry of gold placer tailings, sediments, bedrock, and waters in the lower Clear Creek area, Shasta County, California; report of investigations, 2001-2003

Total mercury and methylmercury measured in sediments, tailings, and water in an area where historical gold mining has occurred; proposed habitat restoration work may release some of the mercury that is currently buried there.

Reconnaissance soil geochemistry at the Riverton Uranium Mill Tailings Remedial Action Site, Fremont County, Wyoming

The site, on the Wind River Indian Reservation, has Eastern Shoshone and Northern Arapahoe tribes concerned about groundwater and soil contamination. This effort studies geochemical soil variation and compares concentrations with levels established by EPA

Relation of arsenic, iron, and manganese in ground water to aquifer type, bedrock lithogeochemistry, and land use in the New England coastal basins

Geochemical data for groundwater from a variety of geologic settings.

Rock Geochemistry and Mineralogy from Fault Zones and Polymetallic Fault Veins of the Central Front Range, Colorado

Data in this report will be used to better understand the processes that control epithermal mineral-deposit formation by attempting to relate the geochemistry of the primary structures that hosted hydrothermal fluid flow to their heat and fluid sources.

Stream-Sediment Geochemistry in Mining-Impacted Drainages of the Yankee Fork of the Salmon River, Custer County, Idaho

Analysis of stream sediments to assess the geochemistry, in particular the mercury and selenium contents, of mining-impacted sediments in the study area

Temporal geochemistry data from five springs in the Cement Creek watershed, San Juan County, Colorado

Seasonal geochemical data intended to understand formation of ferricretes and to help understand the ground-water flow system.

Water and rock geochemistry, geologic cross sections, geochemical modeling, and groundwater flow modeling for identifying the source of groundwater to Montezuma Well, a natural spring in central Arizona

This report releases data, cross section, and model information related to the identification of travel paths for groundwater supply and principal stratigraphic and structural features that serve as constraints or conduits for groundwater movement.

Whole rock geochemistry and grain-size analyses from sediment and rock near Tuba City Open Dump, Tuba City, Arizona

Chemical analysis of geological materials at this EPA Superfund site located on lands of the Hopi and Navajo nations, which may contain mine waste.

Geochemical and mineral maps from soils of the conterminous United States: interactive web site

Interactive web site showing geochemical and mineralogical maps along with a histogram, boxplot, and empirical cumulative distribution function plot for each element or mineral whose data are provided in DS-801

Geochemical and mineralogical maps for soils of the conterminous United States

Geochemical and mineralogical maps along with a histogram, boxplot, and empirical cumulative distribution function plot for each element or mineral whose data are provided in DS-801

Geochemical landscape of the conterminous US: maps of NURE-HSSR data

Maps derived from a subset of the National Uranium Resource Evaluation Hydrogeochemical and Stream Sediment Reconnaissance data. Samples are from streams, lakes, ponds, springs, playas, and soils. Includes Na, Ti, Fe, Cu, Zn, As, Ce, Hf, Pb, Th, and U.

Geochemical maps of stream sediments in central Colorado, from New Mexico to Wyoming

Data portrayed in this portfolio of landscape geochemical maps serve as a geochemical baseline for the region, indicate element abundances characteristic of various lithologic terranes, and identify gross anthropogenic effects of historical mining

A geochemical isotopic (Nd-Pb) comparison of volcanic rocks erupted during the last 3,550 yrs. B.P. of interplinian activity of Somma-Vesuvius Volcano, southern Italy

Nd and Pb isotopic analyses from stratigraphic sampling from Somma-Vesuvius volcanic complex, Italy, during the last 3550 years point to contributions from heterogeneous lithosphere, continental crust, and magma mixing.

Alaska Geochemical Database (AGDB)-Geochemical data for rock, sediment, soil, mineral, and concentrate sample media

Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.

Alaska Geochemical Database, v2

Geochemical analyses of rock, sediment, soil, mineral, and heavy mineral concentrate samples in Alaska analyzed from 1962 through 2009, with best-value estimates.

Alaska Geochemical Database, Version 2.0 (AGDB2)--including "best value" data compilations for rock, sediment, soil, mineral, and concentrate sample media

Geochemical analyses of rocks, mineral separates, bulk samples from lake and stream sediments, heavy mineral concentrates, and soils collected by USGS from 1962 to 2009.

Aqueous geochemical data from the analysis of stream-water samples collected in June and August 2008--Taylor Mountains 1:250,000- and Dillingham D-4 1:63,360-scale quadrangles, Alaska

Measurements on 92 samples, including pH, conductivity, water temperature, major cation and anion concentrations, and trace-element concentrations.

Aqueous geochemical data from the analysis of stream-water samples collected in June and July 2006-Taylor Mountains 1:250,00-scale quadrangle, Alaska

Analyses of 72 water samples include pH, conductivity, water temperature, major cation and anion concentrations, trace-element concentrations, and dissolved organic-carbon concentrations.

Central Colorado Assessment Project (CCAP)-Geochemical data for rock, sediment, soil, and concentrate sample media

Chemical analysis of 47,478 samples of various geological materials to facilitate geologic mapping, petrologic studies, mineral resource assessment, and similar regional environmental assessements.

Chemistry of Selected Core Samples, Concentrate, Tailings, and Tailings Pond Waters: Pea Ridge Iron (-Lanthanide-Gold) Deposit, Washington County, Missouri

This report examines potential sources of lanthanide elements [rare earth elements (REE)] with the objective of providing up-to-date geologic information regarding mineral commodities likely to have increased demand in the near term.

Chemistry of stream sediments and surface waters in New England

Regional data for pH, alkalinity, and specific conductance for stream waters and a multi-element geochemical dataset for stream sediments collected in the New England.

Determination of premining geochemical background and delineation of extent of sediment contamination in Blue Creek downstream from Midnite Mine, Stevens county, Washington

Geochemical and radionuclide analyses of surface samples and cores taken near the outflow of this old uranium mine.

First steps of integrated spatial modeling of titanium, zirconium, and rare earth element resources within the Coastal Plain sediments of the southeastern United States

This report summarizes the assembly of pertinent data, determination of its limits, analysis of its properties, and the relations among the different data types in preparation for future modeling.

Geochemical analyses of geologic materials from areas of critical environmental concern, Clark and Nye counties, Nevada

Results of analysis in tabular form

Geochemical analyses of rock, sediment, and water from the region in and around the Tuba City landfill, Tuba City, Arizona

Regional samples of rock, sediment, leachates, and water were collected in and around the TCL site and analyzed for major and minor elements and radionuclides

Geochemical analysis of soils and sediments, Coeur d'Alene drainage basin, Idaho: Sampling, analytical methods, and results

Chemical composition of sediments and soils are of interest because of the potential for human and wildlife health impacts from high metal contents due to over 100 years of mining activity.

Geochemical and mineralogic characterization of solids and their effects on waters in metal-mining environments, in Seal, R.R., II, and Foley, N.K., eds., Progress on geoenvironmental models for selected mineral deposit types

Geochemical and mineralogical characterization of the abandoned Valzinco (lead-zinc) and Mitchell (gold) mine sites prior to reclamation, Spotsylvania County, Virginia

Geochemical data for all solid sample media, along with mineralogical data, and results of weathering experiments on Valzinco tailings and field experiments on sediment accumulation in Knights Branch.

Geochemical and mineralogical data for soils of the conterminous United States

Systematic geochemical and mineralogical survey of soil horizons analyzed using a consistent set of methods, sample spacing 1 per 1,600 sq km.

Geochemical and mineralogical data for soils of the conterminous United States

Systematic geochemical and mineralogical survey of soil horizons analyzed using a consistent set of methods, sample spacing 1 per 1,600 sq km.

Geochemical and stable isotopic data on barren and mineralized drill core in the Devonian Popovich Formation, Screamer sector of the Betze-Post gold deposit, northern Carlin trend, Nevada

Detailed chemical and isotopic analysis of host and associated rocks within an area that is currently the largest producer of gold in the US. Part of a study of the hydrothermal activity leading to the formation of these gold deposits.

Geochemical and Sulfur-Isotopic Signatures of Volcanogenic Massive Sulfide Deposits on Prince of Wales Island and Vicinity, Southeastern Alaska

Geochemical characterization of drainage prior to reclamation at the abandoned Valzinco mine, Spotsylvania County, Virginia

Geochemical analysis of water samples to provide a pre-reclamation assessment of seasonal variations of acid and metal concentrations in Knight's Branch help evaluate the reclamation project.

Geochemical characterization of mine waste at the Ely Copper Mine superfund site, Orange County, Vermont

An environmental impact study is done for the abandoned Ely copper mine. The extent of contamination is studyed along with the type and chemical composition of the mine waste piles.

Geochemical Characterization of Mine Waste, Mine Drainage, and Stream Sediments at the Pike Hill Copper Mine Superfund Site, Orange County, Vermont: U.S. Geological Survey, in cooperation with the U.S. Environmental Protection Agency

Sampling procedures, analytical methodologies, and results to assess the potential for mine waste and drainage to have an adverse impact on aquatic ecosystems, on drinking- water supplies, and to human health

Geochemical data for Colorado soils-Results from the 2006 state-scale geochemical survey

Major and trace element concentration data for 960 sites, providing a baseline for the natural variation in soil geochemistry in Colorado.

Geochemical data for core and bottom-sediment samples collected in 2007 from Grand Lake o' the Cherokees, northeast Oklahoma

In this area of historical lead-zinc mining activity, studies such as this help to assess the possibility of human exposure to cadmium and lead through eating fish.

Geochemical data for samples collected in 2007 near the concealed Pebble porphyry Cu-Au-Mo deposit, southwest Alaska

Analytical results for geochemical samples collected in 2007 from the Pebble deposit and surrounding environs

Geochemical data for samples collected in 2008 near the concealed Pebble porphyry Cu-Au-Mo deposit, southwest Alaska

Chemical analysis of surface samples taken over a well known but concealed deposit to understand metal migration into the surface materials and to assess the power of surface sampling for detecting concealed deposits of this type.

Geochemical data for stream-sediment, surface-water, rock, and vegetation samples from Red Mountain (Dry Creek), an unmined volcanogenic massive sulfide deposit in the Bonnifield district, Alaska Range, east-central Alaska

Geochemical data for stream sediment, surface-water, rock, precipitate, and vegetation samples from Red Mountain

Geochemical data from analyses of rock, sediment, water, and solid-phase leaching at the Tuba City open dump, Tuba City, Arizona

Study of sources and resulting transport of radionuclides and other dissolved constituents in the surrounding ground water.

Geochemical data from groundwater at the proposed Dewey Burdock uranium in-situ recovery mine, Edgemont, South Dakota

Groundwater geochemistry data from samples that were collected in June 2011 to better understand the hydrogeologic system in the area surrounding the proposed mine site.

Geochemical data from waters in Prospect Gulch, San Juan County, Colorado, that span pre- and post-Lark Mine remediation

Water samples near this abandoned mine were analyzed for specific conductance, pH, temperature, and dissolved oxygen with handheld field meters, and metals were analyzed using inductively coupled plasma-mass spectrometry.

Geochemical database for the Boulder Batholith and its satellitic plutons, southwest Montana

Geochemical analyses of Cretaceous igneous intrusions in order to establish the geologic framework for world-class mineral deposits of the Butte district

Geochemical results from stream-water and stream-sediment samples collected in Colorado and New Mexico

Data from a study intended to explore how well the chemical analysis of water and sediment in an area reflects that of the rock from which the sediments are eroded and through which the water flows.

Geochemical Results of Lysimeter Sampling at the Manning Canyon Repository in the Mercur Mining District, Utah

This report presents chemical characteristics of transient unsaturated-zone water collected by lysimeter from the Manning Canyon repository site in Utah. Data collected by U.S. Geological Survey and U.S. Department of the Interior, Bureau of Land Manageme

Geochemical, modal, and geochronologic data for 1.4 Ga A-type granitoid intrusions of the conterminous United States

This report presents and makes data available to ongoing petrogenetic investigations of these rocks. It develops an accurate and current portrayal of their spatial distribution in GIS format while analyzed samples are presented via Excel workbooks.

Geologic and aeromagnetic maps of the Fossil Ridge area and vicinity, Gunnison County, Colorado

Geologic units, structural features, and aeromagnetic anomaly map of the area

Geologic field notes and geochemical analyses of outcrop and drill core from Mesoproterozoic rocks and iron-oxide deposits and prospects of southeast Missouri

Field notes, locations, rock descriptions, and geochemical analyses from a 1988 to 1994 study to facilitate new research efforts in IOCG (iron-oxide deposits in context with other iron oxide-copper ± uranium) deposit types.

Geologic field notes, geochemical analyses, and field photographs of outcrops and rock samples from the Big Delta B-1 quadrangle, east-central Alaska

Major element oxide and trace element geochemical analyses, including those for gold, silver, and base metals, for representative rock units and for grab samples from quartz veins and mineralized zones within the quadrangle

Geophysical and geochemical data from the area of the Pebble Cu-Au-Mo porphyry deposit, southwestern Alaska: Contributions to assessment techniques for concealed mineral resources

Uninterpreted geophysical measurements and geochemical and mineralogical analytical data from samples collected during the summer field seasons from 2007 to 2010. Data are available in a single Geographic Information System (GIS) database.

Geophysical, geochemical, mineralogical, and enivronmental data for rock samples collected in a mineralized volcanic environment, upper Animas River watershed, Colorado

Data for 90 rock samples collected from 2001 to 2007 for geophysical, geochemical, mineralogical, and environmental rock properties of acid neutralizing capacity and net acid production.

History and evaluation of national-scale geochemical data sets for the United States

Overview explaining how and why six different geochemical data sets were produced, and why you might choose to use the data in any one of these instead of the others.

Hydrogeochemical investigation of the Standard Mine vicinity, upper Elk Creek basin, Colorado

Ground- and surface-water samples were collected in order to characterize the local ground-water flow system, determine metal concentrations in local ground water, and understand factors controlling the discharge of metal-rich waters from the mine.

Hydrogeochemical investigations of historic mining districts, central western slope of Colorado, including influence on surface-water quality

Geochemical analysis of mine dumps, mill tailings, mine drainage, and surface waters indicate contamination from these historic mines is generally less than that asserted or suggested by some geochemical models

Lead-rich sediments, Coeur d'Alene River valley, Idaho; Area, volume, tonnage, and lead content: Surface-sediment geochemical data

Tables containing locations and lead concentrations of 998 surface-sediment geochemical sample sites

Linking geology and health sciences to assess childhood lead poisoning from artisanal gold mining in Nigeria

Approximately 400 young children have died and thousands more are affected. This study clarifies lead sources and exposure pathways, identifies other toxicants of concern and people at risk, and examines potential for similar lead poisoning globally.

Lithogeochemical character of near-surface bedrock in the New England coastal basins

Re-classification of geologic units according to their geochemical properties

Major- and trace-element concentrations in soils from northern California: Results from the Geochemical Landscapes project pilot study

Regional-scale geochemical survey designed to serve as a baseline for further analyses, and to understand effects of historical mining in the area.

Major- and trace-element concentrations in soils from two geochemical surveys (1972 and 2005) of the Denver, Colorado, metropolitan area

Analyses of about 900 samples by ICP-MS, ICP-AES, and hydride generation-atomic absorption spectrometry. The samples collected in 2005 were also analyzed by a cold vapor-atomic absorption method for mercury.

Mesozoic magmatism and base-metal mineralization in the Fortymile mining district, eastern Alaska--Initial results of petrographic, geochemical, and isotopic studies in the Mount Veta area

Initial results of a petrographic, geochemical, and isotopic study of Mesozoic intrusive rocks and spatially associated Zn-Pb-Ag-Cu-Au prospects in the area.

Multielement geochemical dataset of surficial materials for the northern Great Basin

Geochemical data generated during mineral and environmental assessments for the Bureau of Land Management in northern Nevada, northeastern California, southeastern Oregon, and southwestern Idaho.

National Geochemical Database: Concentrate

Geochemistry of concentrates from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

National Geochemical Database: Rock

Geochemical analysis of rock samples collected and analyzed by the USGS. This dataset includes and supersedes rock data formerly released as "Geochemistry of igneous rocks in the US extracted from the PLUTO database"

National Geochemical Database: Sediment

Geochemical analysis of sediment samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are of stream sediment in the continental US and Alaska.

National Geochemical Database: Soil

Geochemical analysis of soil samples from the National Geochemical Database. Primarily inorganic elemental concentrations, most samples are from the continental US and Alaska.

National geochemical survey database

National-scale geochemical analysis of stream sediments and soils in the US, from existing data, reanalysis of existing samples, and new sampling. Goal for sample density is one per 289 square km.

Net acid production, acid neutralizing capacity, and associated geophysical, mineralogical, and geochemical characteristics of Animas River watershed rocks near Silverton, Colorado

Geochemical analysis of rock samples focusing on characteristics relevant to mine cleanup discussions

Net acid production, acid neutralizing capacity, and associated mineralogical and geochemical characteristics of Animas River watershed igneous rocks near Silverton, Colorado

Chemical analysis of altered volcanic rocks to determine their potential for neutralization of acid-rock drainage. Includes magnetic susceptibility measurements as well.

Petrographic and geochemical data for Cenozoic volcanic rocks of the Bodie Hills, California and Nevada

The purpose of this report is to present available petrographic and geochemical data for unmineralized rock samples, principally volcanic rocks and to make those data available to ongoing petrogenetic investigations of these rocks.

Regional geochemical results from the reanalysis of NURE stream sediment samples--Eagle 3 degree quadrangle, east-central Alaska

Reanalyses of NURE sediment samples in the Fortymile mining district, east-central Alaska. Provides new lower limits for some elements. Compares data from newer analytical techniques with original NURE data.

Selected geochemical data for modeling near-surface processes in mineral systems

Data on a variety of mineral deposit types that have variable environmental effects when exposed at the ground surface by mining or natural processes.

Spring runoff water-chemistry data from the Standard Mine and Elk Creek, Gunnison County, Colorado, 2010

Periodic sampling of water during the spring of 2010 was carried out to understand the range and timing of variation in pH and metal concentration, and help evaluate variation in water quality during spring runoff.

Stream-sediment samples reanalyzed for major, rare earth, and trace elements from seven 1:250,000-scale quadrangles, south-central Alaska, 2007-09

New analyses of 1,075 previously collected stream sediment samples, measuring more elements with better precision. Includes arsenic, gold, palladium, and platinum and 55 major, rare earth, and trace element concentrations.

Stream-sediment samples reanalyzed for major, rare earth, and trace elements from ten 1:250,000-scale quadrangles, south-central Alaska, 2007-08

New data for 366 previously collected stream-sediment samples, because recently developed analytical methods can detect additional elements of interest and have lower detection limits than the methods used when these samples were originally analyzed.

Synthesis of petrographic, geochemical, and isotopic data for the Boulder batholith, southwest Montana

Geochemical and mineralogical analyses of plutonic rock samples

The geochemical atlas of Alaska, 2016

Georeferenced images depicting the concentration of 68 chemical elements in the near-surface materials (sediments and soils).

The geochemical landscape of northwestern Wisconsin and adjacent parts of northern Michigan and Minnesota (geochemical data files)

Users guide to Handlens--A computer program that calculates the chemistry of minerals in mixtures

Whole Rock Geochemical Data For Altered And Mineralized Rocks, Red Dog Zn-Pb-Ag District, Western Brooks Range, Alaska

This report presents geochemical analyses for 220 mostly altered and mineralized rock samples from the Red Dog Zn-Pb-Ag district in the western Brooks Range of northern Alaska.

Whole Rock Geochemical Data For Paleozoic Sedimentary Rocks of the Western Brooks Range, Alaska

This report presents geochemical analyses for 210 unaltered and unmineralized rock samples of Paleozoic age in the western Brooks Range of northern Alaska.

Whole-rock and sulfide-mineral geochemical data for samples from volcanogenic massive sulfide deposits of the Bonnifield district, east-central Alaska

The data consist of major- and trace-element whole-rock geochemical analyses and major- and trace-element analyses of sulfide minerals determined by electron microprobe and laser ablation–inductively coupled plasma–mass spectrometry (LA-ICP-MS) techniques

A summary of data collected by the U.S. Geological Survey at Dasht-e-Nawar, Afghanistan, in support of lithium exploration, June-September 2014

USGS collaboration included providing analysis of Landsat imagery; gravity measurements of sediment and rock samples; oversight of passive seismic data collection and subsequent analysis; and analysis of the chemistry and mineralogy of subsurface samples.

Acid-rock drainage at Skytop, Centre County, Pennsylvania, 2004

Analytical Results and Sample Locality Map for Rock, Stream-Sediment, and Soil Samples, Northern and Eastern Colorado Desert BLM Resource Area, Imperial, Riverside, and San Bernardino Counties, California

A geochemical survey of the Bureau of Land Management's 5.5 million-acre Northern and Eastern Colorado Desert Resource Area

Analytical Results and Sample Locations of Reanalyzed NURE Stream-Sediment and Soil Samples for the Humboldt River Basin Mineral-Environmental Assessment, Northern Nevada

The U.S. Geological Survey (USGS) and the Bureau of Land Management (BLM) collected stream-sediment and soil samples in order to evaluate the geochemistry of the Humboldt River Basin.

Analytical results for stream sediment and soil samples from the Commonwealth of Puerto Rico, Isla de Culebra, and Isla de Vieques

Geochemical data from 2560 stream sediment samples collected in Puerto Rico, 421 soil samples collected on Isla de Vieques, and 35 soil samples were collected on Isla de Culebra, analyzed by semiquantitative spectrographic methods.

Aquatic assessment of the Ely Copper Mine Superfund site, Vershire, Vermont

A wide variety of geochemical analyses show strong local impact on water quality in this area of historical copper mining.

Case study of the environmental signature of a recently abandoned, carbonate-hosted replacement deposit: The Clayton Mine, Idaho

Multi-element geochemical analysis of host rock, ore, mine waste, flotation-mill tailings, slag, stream sediments, creek and adit waters, and leachates of mine waste and mill tailings.

Characterization of Geologic Structures and Host Rock Properties Relevant to the Hydrogeology of the Standard Mine in Elk Basin, Gunnison County, Colorado

Geological and borehole geophysical data and observations collected to characterize the basin and its surface and groundwater flow systems with primary focus on the physical characteristics of the fault vein, related mine workings, and surrounding bedrock

Characterization of mine waste at the Elizabeth copper mine, Orange County, Vermont

Preliminary information about the concentration, spatial distribution and mineral hosting of metals and other elements in solid materials at the Elizabeth copper mine after 50 years (or more) of weathering and oxidation.

Chemical analyses of soils and other surficial materials of the conterminous US

Geochemistry of soils and other regoliths collected and analyzed by Hans Shacklette and colleagues from 1958 until about 1976.

Chemical Composition of Samples Collected from Waste Rock Dumps and Other Mining-Related Features at Selected Phosphate Mines in Southeastern Idaho, Western Wyoming, and Northern Utah

Chemical analyses for 31 samples collected from various phosphate mine sites in southeastern Idaho (25), northern Utah (2), and western Wyoming (4)

Chemical data for rock, sediment, biological, precipitate, and water samples from abandoned copper mines in Prince William Sound, Alaska

Report containing tables of geochemical data

Complete analytical data for Jurassic igneous rocks in the Bald Mountain mining district, Nevada

Petrographic and geochemical analyses of 50 outcrop samples and 58 drill core samples.

Concentrations and bioaccessibility of metals in vegetation and dust near a mining haul road, Cape Krusenstern National Monument, Alaska

Samples of surficial materials analyzed for aluminum, barium, cadmium, lead, and zinc concentrations.

Element concentrations in surface soils of the Coconino Plateau, Grand Canyon region, Coconino County, Arizona

Geochemical analysis of 47 elements in more than 700 soil samples that appeared to be unaffected by mineralization or anthropogenic contamination.

Environmental impact of the Contact and Sonoma mercury mines on water, sediment, and biota in Anna Belcher and Little Sulphur Creek watersheds, Sonoma County, California

Data from field sampling of tailings, waste rock, sediment, and water at the mines, along with water, sediment, and biota in a pond and tributaries that drain from the mine area, to help assess the chemical hazards due to historic mining.

Environmental impact of the Helen, Research, and Chicago mercury mines on water, sediment, and biota in the Upper Dry Creek watershed, Lake County, California

Data from field sampling of tailings, waste rock, sediment, and water at the mines, along with water, sediment, and biota in a pond and tributaries that drain from the mine area, to help assess the chemical hazards due to historic mining.

Geologic and mineralogic controls on acid and metal-rich rock drainage in an alpine watershed, Handcard Gulch, Colorado

Mineralogical data on samples from the surface and from drill cores, with geological observations help to understand the hydrology and effects of geology on acid-rock drainage in a mineralized alpine watershed.

Geospatial database for regional environmental assessment of central Colorado

Study focusing on the effects of historical mining on Forest Service lands in this area.

GIS-based identification of areas with mineral resource potential for six selected deposit groups, Bureau of Land Management Central Yukon Planning Area, Alaska

For each deposit group, a map indicates relative density and certainty of favorable data. Tables list datasets used in analysis, parameters queried, their contribution to mineral estimates and allow further user analysis. GIS files enable spatial query.

Impact of mine and natural sources of mercury on water, sediment, and biota in Harley Gulch adjacent to the Abbott-Turkey Run mine, Lake County, California

Detailed samples around these abandoned mines will help to determine how well site remediation efforts have worked to reduce the dangerous levels of mercury that come from both natural sources here as well as the abandoned mines.

Indium in zinc-lead and other mineral deposits -- A reconnaissance survey of 1118 indium analyses published before 1985

Reconnaissance summary and survey of 1118 indium analyses of a diverse suite of minerals, including monomineralic and polymineralic ores and mineral concentrates, from 12 mineral-deposit types, principally zinc-lead deposits, from 16 countries.

Integrated investigations of environmental effects of historical mining in the Animas River watershed, San Juan county, Colorado

Major assessment of the environmental effects of historical mining in the Animas River watershed with GIS data files, tables, and plates.

Major- and trace-element concentrations in rock samples collected in 2006 from the Taylor mountains 1:250,000-scale quadrangle, Alaska

138 rock geochemistry samples collected during the 2006 field season were analyzed using the ICP-AES/MS42, ICP-AES10, fire assay, and cold vapor atomic absorption methods

Major- and trace-element concentrations in soils from two continental-scale transects of the United States and Canada

Spreadsheets containing geochemical data for soils

Mercury release from the Rathburn Mine, Petray Mine, and Bear Valley saline springs, Colusa County, California 2004-2006

Summary of data obtained from field sampling of mine tailings and waste rock and water and sediment in regional springs and tributaries that drain from the mine area into Bear Creek. Ground-water springs are also potential sources of mercury here.

Occurrence and variability of mining-related lead and zinc in the Spring River flood plain and tributary flood plains, Cherokee County, Kansas, 2009--11

One hundred years of historical mining has resulted in substantial ongoing input of cadmium, lead, and zinc into the environment. This surficial-soil sampling and coring study provides information needed to support remediation efforts.

Pb-concentrations and Pb-isotope ratios in soils collected along an east-west transect across the United States

Analytical results for Pb-concentrations and isotopic ratios from about 150 samples of soil A horizon and about 145 samples of soil C horizon collected along a 4000-km east-west transect across the USA.

Physical, chemical, and mineralogical data from surficial deposits, groundwater levels, and water composition in the area of Franklin Lake playa and Ash Meadows, California and Nevada

Presents data and describes the methods used to determine the physical attributes, as well as the chemical and mineralogical composition of surficial deposits; groundwater levels; and water composition in this area.

Quality of water and sediment in streams affected by historical mining, and quality of mine tailings, in the Rio Grande/Río Bravo basin, Big Bend area of the United States and Mexico, August 2002

Geochemical data for stream water, sediments, and mine tailings in this area

Radionuclide data and calculations and loss-on-ignition, X-ray fluorescence, and ICP-AES data from cores in catchments of the Animas river, Colorado

Results from sediment cores collected during 1997-1999 oxbow lakes and beaver ponds to assess impact of historic mining and exposed mineral deposits on the quality of the water and the aquatic and riparian habitats.

Reconnaissance study of the Taylor Mountains pluton, southwestern Alaska

Major and trace element geochemistry for 10 rock samples whose locations are not specified, with data from Argon-Argon analysis supporting geochronological data.

Resource potential and geology of the Grand Mesa, Uncompahgre, and Gunnison (GMUG) National Forests and vicinity, Colorado

Multi-chapter report combining geologic, geochemical, geophysical, and mining activity data. Downloadable data for coal resource information only.

Results from the analysis of 723 stream-sediment samples from the Stikine Geophysical Survey area within the Petersburg, Sumdum, Bradfield Canal, and Sitka quadrangles, southeastern Alaska

Small regional scale geochemical mineral exploration results from field studies in Duncan Canal, Zarembo Island, and western Etolin Island.

Review of samples of sediment, tailings, and waters adjacent to the Cactus Queen gold mine, Kern County, California

Mine tailings here have high levels of arsenic. Experiments conducted on these sediments indicate that the arsenic can be released into the environment and become hazardous through chemical processes that occur when fine sediment is ingested by animals.

Review of samples of tailings, soils and stream sediment adjacent to and downstream from the Ruth Mine, Inyo County, California

Detailed study of mine waste material and sediments from streams passing through it. Arsenic is the main contaminant of interest here.

Review of samples of water, sediment, tailings, and biota at the Little Bonanza mercury mine, San Luis Obispo County, California

Data from field sampling of mine tailings, wasterock, sediment, water, and biota at the mine in 2010. Results permit a preliminary assessment of the mining sources of Hg and associated chemicals that could produce elevated levels of monomethylmercury.

Sediment-hosted stratabound copper deposit model

This report describes key features; identifies tectonic-sedimentary environments; illustrates geochemical, geophysical, and geoenvironmental characteristics; evaluates deposit formation; presents exploration and assessment guides; and lists knowledge gaps

Sequential extraction results and mineralogy of mine waste and stream sediments associated with metal mines in Vermont, Maine, and New Zealand

Results from sequential extraction experiments and the quantitative mineralogy for samples of stream sediments and mine wastes collected from metal mines.

Solid-phase data from cores at the proposed Dewey Burdock uranium in-situ recovery mine, near Edgemont, South Dakota

Geochemical and mineralogical analysis of uranium-bearing sandstone in order to help understand mineral deposits of this type.

Surface-water hydrology and quality at the Pike Hill Superfund Site, Corinth, Vermont, October 2004 to December 2005

Synoptic water-quality and benthic macroinvertebrate sampling at 14 stream sites to characterize the quality of surface water in the watershed on a seasonal and spatial basis, as well as to assess the effects of wetlands on water quality.

Temporal Chemical Data for Sediment, Water, and Biological Samples from the Lava Cap Mine Superfund Site, Nevada County, California-2006-2008

This report is a compilation of water and sediment chemical data generated by the USGS study of indigenous, arsenic-sequestering microbial communities. A total of 9 synoptic sampling efforts conducted at specific sites are described.

Uranium in surface waters and sediments affected by historical mining in the Denver West 1:100,000 quadrangle, Colorado

Geochemical analysis of stream waters and sediments in mountainous areas immediately west of Denver, Colorado, to evaluate the concentration and distribution of uranium-bearing acid drainage originating from historical mines

Water and sediment chemical data and data summary of samples collected in 1999 and 2001 in the Goodpaster River Basin, Big Delta B-2 Quadrangle, Alaska

Weathering and transport of chromium and nickel from serpentinite in the Coast Range ophiolite to the Sacramento Valley, California, USA

Investigates Cr and Ni geochemistry providing insight into the mobility and bioaccessibility of these toxic trace elements throughout northern California and perhaps the origin of elevated dissolved Cr(VI) concentrations in the western Sacramento Valley