Geology, Geophysics, and Geochemistry Science Center

Data and Tools

The Mineral Resources On-Line Spatial Data web portal is our primary resource for interactive maps and downloadable data for regional and global geology, geochemistry, geophysics, and mineral resources.

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Date published: December 26, 2019

Geochemical analyses of bauxite and associated rocks from the Arkansas bauxite region, central Arkansas

This data release compiles major and trace element analytical results of samples of bauxite (aluminum ore) and associated rocks collected from the Arkansas bauxite region, located near the center of Arkansas in Pulaski and Saline Counties. Samples were collected by the U.S. Geological Survey (USGS) in April 2018 as part of the USGS' focus on increased understanding of the United State

Date published: December 23, 2019

Field and Laboratory data of pipe scale forming in acid mine drainage pipelines at Iron Mountain and Leviathan Mines, California

Pipelines carrying acid mine drainage at Iron Mountain and Leviathan Mines (CA, USA) develop pipe scale, a precipitate that forms inside the pipelines. The U.S. Geological Survey is studying the composition of the pipe scale and the acid mine drainage water flowing through the pipeline through field samples and laboratory experimentation. This data release provides the data from the stu

Date published: December 16, 2019

Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Alaska

Selected archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) program, were reanalyzed by the U.S. Geological Survey (USGS) as part of a NURE-HSSR Reanalysis project (Smith and others, 2018). A small amount (approximately 0.25 grams [g]) of sieved less than 75-micron sampl

Date published: November 25, 2019

Prospect- and Mine-Related Features from U.S. Geological Survey 7.5- and 15-Minute Topographic Quadrangle Maps of the United States

Version 4.0 of these data are part of a larger USGS project to develop an updated geospatial database of mines, mineral deposits and mineral regions in the United States. Mine and prospect-related symbols, such as those used to represent prospect pits, mines, adits, dumps, tailings, etc., hereafter referred to as “mine” symbols or features, are currently being di

Date published: November 20, 2019

Multi-element geochemical analyses of selected samples from the Mesoproterozoic Nonesuch Formation and Copper Harbor Conglomerate at the Copperwood copper deposit, Michigan, USA

This data release provides multi-element data for drill core samples from the Mesoproterozoic Nonesuch Formation and Copper Harbor Conglomerate at the Copperwood copper deposit, Michigan, USA. Gold, platinum, and palladium data were collected by fire assay; copper and silver were collected by assay; and other elements were collected by inductively coupled plasma-optical emission spect

Date published: November 18, 2019

Airborne horizontal magnetic gradiometry flight line data, southeast Missouri and western Illinois, 2018-2019

The airborne magnetic data are provided here as part of the data release, Airborne magnetic and radiometric survey, southeast Missouri and western Illinois, 2018-2019. The magnetic data include the processed aeromagnetic data provided by the contractor and a geoTIFF showing the total magnetic intensity (TMI) in nanoTeslas. This data release provides digital flight line data for

Date published: November 18, 2019

Airborne radiometric flight line data, southeast Missouri and western Illinois, 2018-2019

The airborne radiometric data are provided here as part of the data release, Airborne magnetic and radiometric survey, southeast Missouri and western Illinois, 2018-2019. The radiometric data include the processed aeroradiometric data provided by the contractor and geoTIFFs showing the potassium (K.tif), uranium (eU.tif), and thorium (eTh.tif) content. This data rel

Date published: November 18, 2019

Airborne magnetic and radiometric survey, southeast Missouri and western Illinois, 2018-2019

This publication provides digital flight line data for a high-resolution horizontal magnetic gradient and radiometric survey over an area of southeast Missouri and western Illinois. The survey represents the first airborne geophysical survey conducted as part of the U.S. Geological Survey (USGS) Earth Mapping Resource Initiative (Earth MRI) effort (Day, 2019). Earth MRI is a coopera

Date published: November 5, 2019

Geochemical data supporting a comparison of apatite between regional magmatism and the Pea Ridge Iron Oxide-Apatite-Rare Earth Element (IOA-REE) and Boss Iron Oxide-Copper-Cobalt-Gold-REE Deposits (IOCG) deposits, southeastern Missouri, USA

This data release presents high-spatial resolution geochemical analyses collected from Mesoproterozoic apatite crystals in igneous rocks from the St. Francois Mountains terrane and coeval ore rocks from the Pea Ridge iron oxide-apatite-rare earth element (IOA-REE) and Boss iron oxide-copper-gold (IOCG) deposits. These deposits are located in the southeast Missouri iron metallogenic provin

Date published: October 16, 2019

Data Dictionary for Electron Microprobe Data Collected with Probe for EPMA Software Package Developed by Probe Software

This data dictionary describes most of the possible output options given in the Probe for EPMA software package developed by Probe Software. Examples of the data output options include sample identification, analytical conditions, elemental weight percents, atomic percents, detection limits, and stage coordinates. Many more options are available and the data that is output will depen

Date published: October 7, 2019

Argon geochronology data for eastern Bhutan

This dataset accompanies publication 'The influence of foreland structures on hinterland cooling: evaluating the drivers of exhumation in the eastern Bhutan Himalaya'. The Ar/Ar data provides time constraints for the cooling of rocks in the study area.

Date published: October 1, 2019

Reanalysis of Selected Archived NURE-HSSR Sediment and Soil Samples from Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah

Beginning in November of 2015, a project was undertaken to reanalyze approximately 60,000 archived sample splits collected as part of the National Uranium Resource Evaluation (NURE) Hydrogeochemical and Stream Sediment Reconnaissance (HSSR) project from selected areas in Arizona, California, Idaho, Montana, Nevada, New Mexico, and Utah. A small amount (approximately 0.25