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Bradley S Van Gosen

Brad Van Gosen is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.

Science and Products

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U.S. east coast sediments

Heavy-Mineral Sand Resources in the Southeastern U.S.

We are assessing the extent of industrial mineral resources hosted by heavy-mineral sands in the coastal plain of the southeastern United States. “Heavy-mineral sands" (HMS) is a term commonly used in industry and geologic literature to describe layered sediments deposited in coastal environments that contain dense (“heavy") minerals of economic value. The heavy minerals extracted from these...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
link

Heavy-Mineral Sand Resources in the Southeastern U.S.

We are assessing the extent of industrial mineral resources hosted by heavy-mineral sands in the coastal plain of the southeastern United States. “Heavy-mineral sands" (HMS) is a term commonly used in industry and geologic literature to describe layered sediments deposited in coastal environments that contain dense (“heavy") minerals of economic value. The heavy minerals extracted from these...
Learn More
link
USGS science for a changing world logo

Distribution of Fibrous Erionite in the United States and Implications For Human Health

Fibrous erionite, a zeolite mineral, has been designated as a human carcinogen by the World Health Organization and is believed to be the cause of extraordinarily high rates of malignant mesothelioma and other asbestos - related diseases in several villages in Central Turkey. A recent study by the University of Hawaii in collaboration with the U. S. Environmental Protection Agency in...
By
John Wesley Powell Center for Analysis and Synthesis
link

Distribution of Fibrous Erionite in the United States and Implications For Human Health

Fibrous erionite, a zeolite mineral, has been designated as a human carcinogen by the World Health Organization and is believed to be the cause of extraordinarily high rates of malignant mesothelioma and other asbestos - related diseases in several villages in Central Turkey. A recent study by the University of Hawaii in collaboration with the U. S. Environmental Protection Agency in Dunn County,
Learn More
Filter Total Items: 15

Geochemical data for carbonatite samples from the Mountain Pass rare earth element deposit, southeast California

This data release contains whole-rock major, minor, and trace element geochemical data for carbonatite samples from the Mountain Pass rare earth element (REE) deposit located in southeastern California. The Mountain Pass deposit is the largest REE deposit in the United States and in 2021, produced 43,000 metric tons (expressed as rare-earth-oxide equivalent; U.S. Geological Survey, 2022)...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Microanalysis of samples collected from the Sulfur Springs Draw calcrete-type uranium deposit in the Southern High Plains, Texas, USA

This data release presents the results of microanalysis of 2 samples SSD15_01A (1 thin section and 1 composite chip sample), and SSD15_01B (1 thin section). The samples were collected in 2015 by U.S. Geological Survey geologists Bradley Van Gosen and Susan Hall from surface exposures of uranium mineralization in Sulfur Springs Draw, in Martin County, Texas (Van Gosen and Hall, 2017). The...
By
Central Energy Resources Science Center

In Vitro Bioaccessibility Extractions from Previously Collected Uranium Mineral Deposit Samples, 1971 and 1981, Southwestern U.S

This data set provides total element concentration and simulated lung and gastric fluid bioaccessibility from previously collected Uranium mineral deposit samples (1971 and 1981, Southwestern U.S.) exploring possible exposures to other hazardous trace metals. Elevated total as well as simulated gastric and lung fluid concentrations were observed for arsenic, cobalt, manganese, thallium...
By
Geology, Geophysics, and Geochemistry Science Center

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...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Mineral Resources Program, Toxic Substances Hydrology, Geology, Geophysics, and Geochemistry Science Center

Whole-rock geochemical data for alkaline intrusive rocks in the Wet Mountains area of Custer and Fremont Counties, south-central Colorado, USA

This data release contains the whole-rock major and trace element analyses of 51 samples of intrusive igneous rocks from the Wet Mountains area of Custer and Fremont counties of south-central Colorado, collected by U.S. Geological Survey (USGS) geologists. The samples were collected from breccias, veins and thin dikes, and a variety of carbonatite, felsic, mafic, and ultramafic...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

Mineralogical analyses of drill core samples from the Canyon uranium-copper deposit, a solution-collapse breccia pipe, Grand Canyon area, Coconino County, Arizona, USA

This data release compiles the X-ray diffraction and electron microscopy analyses of drill core samples collected by the U.S. Geological Survey that were selected to typify the uranium-copper ore bodies of the Canyon deposit. The deposit is hosted by a solution-collapse breccia pipe, in which mineralization exists from about 650 to 2,100 ft (200 to 640 m) below the surface (Mathisen and...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Mineral Resources Program, Toxic Substances Hydrology, Geology, Geophysics, and Geochemistry Science Center

Geochemical and mineralogical analyses of uranium ores from the Hack II and Pigeon deposits, solution-collapse breccia pipes, Grand Canyon region, Mohave and Coconino Counties, Arizona, USA

This data release compiles the whole-rock geochemistry, X-ray diffraction, and electron microscopy analyses of samples collected from the uranium ore bodies of two mined-out deposits in the Grand Canyon region of northwestern Arizona - the Hack II and Pigeon deposits. The samples are grab samples of ore collected underground at each mine by the U.S. Geological Survey (USGS) during the...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Mineral Resources Program, Toxic Substances Hydrology, Geology, Geophysics, and Geochemistry Science Center, Denver Microbeam Laboratory

Whole-rock geochemical data for the Bear Lodge alkaline complex, Wyoming: 2009 - 2013

This data release contains analytical data from a suite of rock samples collected within the Bear Lodge alkaline complex, northeast Wyoming, which hosts the Bear Lodge rare earth element (REE) deposit. Geochemistry data include major and trace element analytical results for 105 samples including alkaline igneous rocks, carbonatites, and weathered and oxidized samples. Samples were...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical and X-ray diffraction analyses of drill core samples from the Canyon uranium-copper deposit, a solution-collapse breccia pipe, Grand Canyon area, Coconino County, Arizona

This data release compiles the major and trace element analytical results of drill core samples that typify the uranium-copper ore bodies of the Canyon deposit, located about 6.1 miles (10 km) south-southeast of Tusayan, Arizona. The Canyon deposit lies from about 750 to 2,000 ft (230 to 610 m) below the surface at latitude 35.88333 North, longitude -112.09583 West (datum WGS 1984)...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

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 States'...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

Rare Earth Element Occurrences in the United States

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...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center

Reported historic asbestos mines, historic asbestos prospects, and other natural occurrences of asbestos in the conterminous United States

This data release is a compilation of six earlier reports on natural occurrences of asbestos in the conterminous United States, which were published separately; these are Van Gosen (2005, 2006, 2007, 2008, 2010) and Van Gosen and Clinkenbeard (2011). The earlier reports were compilations divided by regions of the United States; in each report the data were provided in spreadsheet format...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Surficial Geologic Map of the Mount Hopkins and northern part of the San Cayetano Mountains 7.5’ Quadrangles, Santa Cruz and Pima Counties, Arizona

No abstract available.
By
Geology, Geophysics, and Geochemistry Science Center

Generalized geologic map of the Absaroka-Beartooth study area, south-central Montana

No abstract available.

Reconnaissance geologic map of the Sliderock Mountain area, Sweet Grass and Stillwater counties, Montana

The remains of a deeply eroded Late Cretaceous stratovolcano centered near Sliderock Mountain dominate the map area. The volcano consists mostly of lahars, although basaltic andesite lava flows are also present. An extensively eroded, weakly mineralized hypabyssal intrusive complex, inferred to represent the volcano's solidified magma chamber, intrudes previously erupted lava flows and...

Geologic map of the Big Timber Stock and vicinity, southern Crazy Mountains, Sweet Grass and Park counties, south-central Montana

No abstract available.

Fence diagram showing coal bed correlations within the upper part of the Fort Union Formation, in and adjacent to the eastern part of the Kaycee 30' x 60' Quadrangle, Johnson and Campbell counties, Wyoming

No abstract available.

Maps showing the coal geology of the Sarpy Creek area, Big Horn and Treasure counties, Montana

No abstract available.

Stratigraphic framework of coal beds underlying the northeastern part of the Fort Peck Indian Reservation, Montana

The area of investigation is located in the northeast part of the Fort Peck Indian Reservation (fig. 1) on the western flank of the Williston Basin. It covers about 450 square miles and is made up of parts of Daniels, Sheridan, and Roosevelt counties. Exploratory drilling for coal and logging of seismograph drill holes in 1978-1981 were done with the support of the Branch of Indian...

Maps and sections showing geology and coal resources of the northeastern part of the Crow Indian Reservation, Big Horn County, Montana

No abstract available.
Concord mine
Concord Heavy-Mineral Sands Mine
Concord Heavy-Mineral Sands Mine
Concord mine

Concord Heavy-Mineral Sands Mine

Concord Heavy-Mineral Sands Mine

The Concord heavy-mineral-sands mine of Iluka Resources in south-central Virginia.

By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Concord mine

Concord Heavy-Mineral Sands Mine

Concord Heavy-Mineral Sands Mine

The Concord heavy-mineral-sands mine of Iluka Resources in south-central Virginia.

By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Filter Total Items: 100

Sandstone-hosted uranium deposits of the Colorado Plateau, USA

More than 4,000 sandstone-hosted uranium occurrences host over 1.2 billion pounds of mined and in situ U3O8 throughout the Colorado Plateau. Most of the resources are in two distinct mineral systems with deposits hosted in the Triassic Chinle and Jurassic Morrison Formations. In the Chinle mineral system, base metal sulfides typically accompany mineralization. The Morrison mineral system...
Authors
Susan M. Hall, Bradley S. Van Gosen, Robert A. Zielinski
By
Energy Resources Program, Central Energy Resources Science Center

Finchite, Sr(UO2)2(V2O8)·5H2O, a new uranyl sorovanadate with the francevillite anion topology

Finchite (IMA2017-052), Sr(UO2)2(V2O8)·5H2O, is the first uranium mineral known to contain essential Sr. The new mineral occurs as yellow-green blades up to ~10 µm in length in surface outcrops of the calcrete-type uranium deposit at Sulfur Springs Draw, Martin County, Texas, U.S.A. Crystals of finchite were subsequently discovered underground in the Pandora mine, La Sal, San Juan County...
Authors
Tyler P. Spear, Travis Olds, Susan Hall, Bradley S. Van Gosen, Anthony Kampf, Peter Burns, Joe Marty
By
Energy Resources Program, Central Energy Resources Science Center

Laboratory simulation of groundwater along uranium-mining-affected flow paths near the Grand Canyon, Arizona, USA

Mining of volumetrically small, but relatively enriched (average 0.6% U3O8) breccia pipe uranium (BPU) deposits near the Grand Canyon, Arizona, USA has the potential to affect groundwater and springs in the area. Such deposits also contain base metal sulfides that can oxidize to generate acid mine drainage and release trace metals. In this study, sequential batch experiments were...
Authors
Carleton R. Bern, Kate M. Campbell, Katherine Walton-Day, Bradley S. Van Gosen
By
Water Resources Mission Area, Colorado Water Science Center

Reconnaissance study of the major and trace element content of bauxite deposits in the Arkansas bauxite region, Saline and Pulaski Counties, central Arkansas

The Arkansas bauxite district, which comprises about 275 square miles (710 square kilometers) of central Arkansas, produced an order of magnitude more bauxite and alumina than the other bauxite districts in the United States combined. Bauxite was mined in the region continuously from 1898 to 1982. These bauxites are laterite deposits, formed from intensive in-place weathering of the...
Authors
Bradley S. Van Gosen, LaDonna M. Choate
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

The critical minerals initiative of the U.S. Geological Survey’s mineral deposit database project: USMIN

The objective of the US Geological Survey’s mineral deposit database project (USMIN) is to develop a comprehensive twenty-first century geospatial database that is the authoritative source of the most important mines, mineral deposits, and mineral districts of the US. Since May 2017, the project has focused on critical minerals. Data for critical minerals that are produced as products...
Authors
Jeffrey L. Mauk, Nick A Karl, Carma A. San Juan, Liam Dandurand Knudsen, German Schmeda, Clayton Robert Forbush, Bradley S. Van Gosen, Morgan Mullins, Patrick Christopher Scott
By
Geology, Geophysics, and Geochemistry Science Center

User guide to the bayesian modeling of non-stationary, univariate, spatial data using R language package BMNUS

Bayesian modeling of non-stationary, univariate, spatial data is performed using the R-language package BMNUS. A unique advantage of this package is that it can map the mean, standard deviation, quantiles, and probability of exceeding a specified value. The package includes several R-language classes that prepare the data for the modeling, help select suitable model parameters, and help...
Authors
Karl J. Ellefsen, Margaret A. Goldman, Bradley S. Van Gosen
By
Geology, Geophysics, and Geochemistry Science Center

Bayesian modeling of non-stationary, univariate, spatial data for the Earth sciences

Some Earth science data, such as geochemical measurements of element concentrations, are non-stationary—the mean and the standard deviation vary spatially. It is important to estimate the spatial variations in both statistics because such information is indicative of geological and other Earth processes. To this end, an estimation method is formulated as a Bayesian hierarchical model...
Authors
Karl J. Ellefsen, Bradley S. Van Gosen
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Heavy mineral sands resources in China

About 200 known coastal deposits of heavy mineral sands (HMS) occur in China, in which considerable mineral resources of titanium, zircon, rare earth elements, and thorium exist in the forms of ilmenite, rutile, zircon, and monazite. More than 20 of these HMS deposits are reported as having been or are actively being mined in China during the past three decades, of which 12 have been...
Authors
Bradley S. Van Gosen, Baohong Hou, Tianrui Song
By
Geology, Geophysics, and Geochemistry Science Center

Calcrete uranium deposits in the Southern High Plains, USA

The Southern High Plains (SHP) is a new and emerging U.S. uranium province. Here, uranyl vanadates form deposits in Pliocene to Pleistocene sandstone, dolomite, and limestone. Fifteen calcrete uranium occurrences are identified; two of these, the Buzzard Draw and Sulfur Springs Draw deposits, have combined in-place resources estimated at about 4 million pounds of U3O8. Ore minerals...
Authors
Susan Hall, Bradley S. Van Gosen, James B. Paces, Robert A. Zielinski
By
Energy Resources Program, Mineral Resources Program, Central Energy Resources Science Center, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center

Rare earth element mineral deposits in the United States

Because of their unique special chemical properties, many of the metals in the group of rare earth elements (REEs) have essential applications in 21st century technologies. Examples of products that use REEs are cell phones, computers, fluorescent and light-emitting-diode lights, flat-screen television and computer monitors, and in high-strength magnets used by clean energy technologies...
Authors
Bradley S. Van Gosen, Philip L. Verplanck, Poul Emsbo
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

Titanium mineral resources in heavy-mineral sands in the Atlantic coastal plain of the southeastern United States

This study examined titanium distribution in the Atlantic Coastal Plain of the southeastern United States; the titanium is found in heavy-mineral sands that include the minerals ilmenite (Fe2+TiO3), rutile (TiO2), or leucoxene (an alteration product of ilmenite). Deposits of heavy-mineral sands in ancient and modern coastal plains are a significant feedstock source for the titanium...
Authors
Bradley S. Van Gosen, Karl J. Ellefsen
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Assessment of undiscovered resources in calcrete uranium deposits, Southern High Plains region of Texas, New Mexico, and Oklahoma, 2017

The U.S. Geological Survey estimates a mean of 40 million pounds of in-place uranium oxide (U3O8) remaining as potential undiscovered resources in the Southern High Plains region of Texas, New Mexico, and Oklahoma. This estimate used a geology-based assessment method specific to calcrete uranium deposits.
Authors
Susan M. Hall, Mark J. Mihalasky, Bradley S. Van Gosen
By
Energy Resources Program, Mineral Resources Program, Central Energy Resources Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Geology, Geophysics, and Geochemistry Science Center

Science and Products

link
U.S. east coast sediments

Heavy-Mineral Sand Resources in the Southeastern U.S.

We are assessing the extent of industrial mineral resources hosted by heavy-mineral sands in the coastal plain of the southeastern United States. “Heavy-mineral sands" (HMS) is a term commonly used in industry and geologic literature to describe layered sediments deposited in coastal environments that contain dense (“heavy") minerals of economic value. The heavy minerals extracted from these...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
link

Heavy-Mineral Sand Resources in the Southeastern U.S.

We are assessing the extent of industrial mineral resources hosted by heavy-mineral sands in the coastal plain of the southeastern United States. “Heavy-mineral sands" (HMS) is a term commonly used in industry and geologic literature to describe layered sediments deposited in coastal environments that contain dense (“heavy") minerals of economic value. The heavy minerals extracted from these...
Learn More
link
USGS science for a changing world logo

Distribution of Fibrous Erionite in the United States and Implications For Human Health

Fibrous erionite, a zeolite mineral, has been designated as a human carcinogen by the World Health Organization and is believed to be the cause of extraordinarily high rates of malignant mesothelioma and other asbestos - related diseases in several villages in Central Turkey. A recent study by the University of Hawaii in collaboration with the U. S. Environmental Protection Agency in...
By
John Wesley Powell Center for Analysis and Synthesis
link

Distribution of Fibrous Erionite in the United States and Implications For Human Health

Fibrous erionite, a zeolite mineral, has been designated as a human carcinogen by the World Health Organization and is believed to be the cause of extraordinarily high rates of malignant mesothelioma and other asbestos - related diseases in several villages in Central Turkey. A recent study by the University of Hawaii in collaboration with the U. S. Environmental Protection Agency in Dunn County,
Learn More
Filter Total Items: 15

Geochemical data for carbonatite samples from the Mountain Pass rare earth element deposit, southeast California

This data release contains whole-rock major, minor, and trace element geochemical data for carbonatite samples from the Mountain Pass rare earth element (REE) deposit located in southeastern California. The Mountain Pass deposit is the largest REE deposit in the United States and in 2021, produced 43,000 metric tons (expressed as rare-earth-oxide equivalent; U.S. Geological Survey, 2022)...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Microanalysis of samples collected from the Sulfur Springs Draw calcrete-type uranium deposit in the Southern High Plains, Texas, USA

This data release presents the results of microanalysis of 2 samples SSD15_01A (1 thin section and 1 composite chip sample), and SSD15_01B (1 thin section). The samples were collected in 2015 by U.S. Geological Survey geologists Bradley Van Gosen and Susan Hall from surface exposures of uranium mineralization in Sulfur Springs Draw, in Martin County, Texas (Van Gosen and Hall, 2017). The...
By
Central Energy Resources Science Center

In Vitro Bioaccessibility Extractions from Previously Collected Uranium Mineral Deposit Samples, 1971 and 1981, Southwestern U.S

This data set provides total element concentration and simulated lung and gastric fluid bioaccessibility from previously collected Uranium mineral deposit samples (1971 and 1981, Southwestern U.S.) exploring possible exposures to other hazardous trace metals. Elevated total as well as simulated gastric and lung fluid concentrations were observed for arsenic, cobalt, manganese, thallium...
By
Geology, Geophysics, and Geochemistry Science Center

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...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Mineral Resources Program, Toxic Substances Hydrology, Geology, Geophysics, and Geochemistry Science Center

Whole-rock geochemical data for alkaline intrusive rocks in the Wet Mountains area of Custer and Fremont Counties, south-central Colorado, USA

This data release contains the whole-rock major and trace element analyses of 51 samples of intrusive igneous rocks from the Wet Mountains area of Custer and Fremont counties of south-central Colorado, collected by U.S. Geological Survey (USGS) geologists. The samples were collected from breccias, veins and thin dikes, and a variety of carbonatite, felsic, mafic, and ultramafic...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

Mineralogical analyses of drill core samples from the Canyon uranium-copper deposit, a solution-collapse breccia pipe, Grand Canyon area, Coconino County, Arizona, USA

This data release compiles the X-ray diffraction and electron microscopy analyses of drill core samples collected by the U.S. Geological Survey that were selected to typify the uranium-copper ore bodies of the Canyon deposit. The deposit is hosted by a solution-collapse breccia pipe, in which mineralization exists from about 650 to 2,100 ft (200 to 640 m) below the surface (Mathisen and...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Mineral Resources Program, Toxic Substances Hydrology, Geology, Geophysics, and Geochemistry Science Center

Geochemical and mineralogical analyses of uranium ores from the Hack II and Pigeon deposits, solution-collapse breccia pipes, Grand Canyon region, Mohave and Coconino Counties, Arizona, USA

This data release compiles the whole-rock geochemistry, X-ray diffraction, and electron microscopy analyses of samples collected from the uranium ore bodies of two mined-out deposits in the Grand Canyon region of northwestern Arizona - the Hack II and Pigeon deposits. The samples are grab samples of ore collected underground at each mine by the U.S. Geological Survey (USGS) during the...
By
Ecosystems Mission Area, Contaminant Biology, Environmental Health Program, Mineral Resources Program, Toxic Substances Hydrology, Geology, Geophysics, and Geochemistry Science Center, Denver Microbeam Laboratory

Whole-rock geochemical data for the Bear Lodge alkaline complex, Wyoming: 2009 - 2013

This data release contains analytical data from a suite of rock samples collected within the Bear Lodge alkaline complex, northeast Wyoming, which hosts the Bear Lodge rare earth element (REE) deposit. Geochemistry data include major and trace element analytical results for 105 samples including alkaline igneous rocks, carbonatites, and weathered and oxidized samples. Samples were...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical and X-ray diffraction analyses of drill core samples from the Canyon uranium-copper deposit, a solution-collapse breccia pipe, Grand Canyon area, Coconino County, Arizona

This data release compiles the major and trace element analytical results of drill core samples that typify the uranium-copper ore bodies of the Canyon deposit, located about 6.1 miles (10 km) south-southeast of Tusayan, Arizona. The Canyon deposit lies from about 750 to 2,000 ft (230 to 610 m) below the surface at latitude 35.88333 North, longitude -112.09583 West (datum WGS 1984)...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

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 States'...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

Rare Earth Element Occurrences in the United States

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...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center

Reported historic asbestos mines, historic asbestos prospects, and other natural occurrences of asbestos in the conterminous United States

This data release is a compilation of six earlier reports on natural occurrences of asbestos in the conterminous United States, which were published separately; these are Van Gosen (2005, 2006, 2007, 2008, 2010) and Van Gosen and Clinkenbeard (2011). The earlier reports were compilations divided by regions of the United States; in each report the data were provided in spreadsheet format...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Surficial Geologic Map of the Mount Hopkins and northern part of the San Cayetano Mountains 7.5’ Quadrangles, Santa Cruz and Pima Counties, Arizona

No abstract available.
By
Geology, Geophysics, and Geochemistry Science Center

Generalized geologic map of the Absaroka-Beartooth study area, south-central Montana

No abstract available.

Reconnaissance geologic map of the Sliderock Mountain area, Sweet Grass and Stillwater counties, Montana

The remains of a deeply eroded Late Cretaceous stratovolcano centered near Sliderock Mountain dominate the map area. The volcano consists mostly of lahars, although basaltic andesite lava flows are also present. An extensively eroded, weakly mineralized hypabyssal intrusive complex, inferred to represent the volcano's solidified magma chamber, intrudes previously erupted lava flows and...

Geologic map of the Big Timber Stock and vicinity, southern Crazy Mountains, Sweet Grass and Park counties, south-central Montana

No abstract available.

Fence diagram showing coal bed correlations within the upper part of the Fort Union Formation, in and adjacent to the eastern part of the Kaycee 30' x 60' Quadrangle, Johnson and Campbell counties, Wyoming

No abstract available.

Maps showing the coal geology of the Sarpy Creek area, Big Horn and Treasure counties, Montana

No abstract available.

Stratigraphic framework of coal beds underlying the northeastern part of the Fort Peck Indian Reservation, Montana

The area of investigation is located in the northeast part of the Fort Peck Indian Reservation (fig. 1) on the western flank of the Williston Basin. It covers about 450 square miles and is made up of parts of Daniels, Sheridan, and Roosevelt counties. Exploratory drilling for coal and logging of seismograph drill holes in 1978-1981 were done with the support of the Branch of Indian...

Maps and sections showing geology and coal resources of the northeastern part of the Crow Indian Reservation, Big Horn County, Montana

No abstract available.
Concord mine
Concord Heavy-Mineral Sands Mine
Concord Heavy-Mineral Sands Mine
Concord mine

Concord Heavy-Mineral Sands Mine

Concord Heavy-Mineral Sands Mine

The Concord heavy-mineral-sands mine of Iluka Resources in south-central Virginia.

By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Concord mine

Concord Heavy-Mineral Sands Mine

Concord Heavy-Mineral Sands Mine

The Concord heavy-mineral-sands mine of Iluka Resources in south-central Virginia.

By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Filter Total Items: 100

Sandstone-hosted uranium deposits of the Colorado Plateau, USA

More than 4,000 sandstone-hosted uranium occurrences host over 1.2 billion pounds of mined and in situ U3O8 throughout the Colorado Plateau. Most of the resources are in two distinct mineral systems with deposits hosted in the Triassic Chinle and Jurassic Morrison Formations. In the Chinle mineral system, base metal sulfides typically accompany mineralization. The Morrison mineral system...
Authors
Susan M. Hall, Bradley S. Van Gosen, Robert A. Zielinski
By
Energy Resources Program, Central Energy Resources Science Center

Finchite, Sr(UO2)2(V2O8)·5H2O, a new uranyl sorovanadate with the francevillite anion topology

Finchite (IMA2017-052), Sr(UO2)2(V2O8)·5H2O, is the first uranium mineral known to contain essential Sr. The new mineral occurs as yellow-green blades up to ~10 µm in length in surface outcrops of the calcrete-type uranium deposit at Sulfur Springs Draw, Martin County, Texas, U.S.A. Crystals of finchite were subsequently discovered underground in the Pandora mine, La Sal, San Juan County...
Authors
Tyler P. Spear, Travis Olds, Susan Hall, Bradley S. Van Gosen, Anthony Kampf, Peter Burns, Joe Marty
By
Energy Resources Program, Central Energy Resources Science Center

Laboratory simulation of groundwater along uranium-mining-affected flow paths near the Grand Canyon, Arizona, USA

Mining of volumetrically small, but relatively enriched (average 0.6% U3O8) breccia pipe uranium (BPU) deposits near the Grand Canyon, Arizona, USA has the potential to affect groundwater and springs in the area. Such deposits also contain base metal sulfides that can oxidize to generate acid mine drainage and release trace metals. In this study, sequential batch experiments were...
Authors
Carleton R. Bern, Kate M. Campbell, Katherine Walton-Day, Bradley S. Van Gosen
By
Water Resources Mission Area, Colorado Water Science Center

Reconnaissance study of the major and trace element content of bauxite deposits in the Arkansas bauxite region, Saline and Pulaski Counties, central Arkansas

The Arkansas bauxite district, which comprises about 275 square miles (710 square kilometers) of central Arkansas, produced an order of magnitude more bauxite and alumina than the other bauxite districts in the United States combined. Bauxite was mined in the region continuously from 1898 to 1982. These bauxites are laterite deposits, formed from intensive in-place weathering of the...
Authors
Bradley S. Van Gosen, LaDonna M. Choate
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

The critical minerals initiative of the U.S. Geological Survey’s mineral deposit database project: USMIN

The objective of the US Geological Survey’s mineral deposit database project (USMIN) is to develop a comprehensive twenty-first century geospatial database that is the authoritative source of the most important mines, mineral deposits, and mineral districts of the US. Since May 2017, the project has focused on critical minerals. Data for critical minerals that are produced as products...
Authors
Jeffrey L. Mauk, Nick A Karl, Carma A. San Juan, Liam Dandurand Knudsen, German Schmeda, Clayton Robert Forbush, Bradley S. Van Gosen, Morgan Mullins, Patrick Christopher Scott
By
Geology, Geophysics, and Geochemistry Science Center

User guide to the bayesian modeling of non-stationary, univariate, spatial data using R language package BMNUS

Bayesian modeling of non-stationary, univariate, spatial data is performed using the R-language package BMNUS. A unique advantage of this package is that it can map the mean, standard deviation, quantiles, and probability of exceeding a specified value. The package includes several R-language classes that prepare the data for the modeling, help select suitable model parameters, and help...
Authors
Karl J. Ellefsen, Margaret A. Goldman, Bradley S. Van Gosen
By
Geology, Geophysics, and Geochemistry Science Center

Bayesian modeling of non-stationary, univariate, spatial data for the Earth sciences

Some Earth science data, such as geochemical measurements of element concentrations, are non-stationary—the mean and the standard deviation vary spatially. It is important to estimate the spatial variations in both statistics because such information is indicative of geological and other Earth processes. To this end, an estimation method is formulated as a Bayesian hierarchical model...
Authors
Karl J. Ellefsen, Bradley S. Van Gosen
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Heavy mineral sands resources in China

About 200 known coastal deposits of heavy mineral sands (HMS) occur in China, in which considerable mineral resources of titanium, zircon, rare earth elements, and thorium exist in the forms of ilmenite, rutile, zircon, and monazite. More than 20 of these HMS deposits are reported as having been or are actively being mined in China during the past three decades, of which 12 have been...
Authors
Bradley S. Van Gosen, Baohong Hou, Tianrui Song
By
Geology, Geophysics, and Geochemistry Science Center

Calcrete uranium deposits in the Southern High Plains, USA

The Southern High Plains (SHP) is a new and emerging U.S. uranium province. Here, uranyl vanadates form deposits in Pliocene to Pleistocene sandstone, dolomite, and limestone. Fifteen calcrete uranium occurrences are identified; two of these, the Buzzard Draw and Sulfur Springs Draw deposits, have combined in-place resources estimated at about 4 million pounds of U3O8. Ore minerals...
Authors
Susan Hall, Bradley S. Van Gosen, James B. Paces, Robert A. Zielinski
By
Energy Resources Program, Mineral Resources Program, Central Energy Resources Science Center, Geology, Geophysics, and Geochemistry Science Center, Geosciences and Environmental Change Science Center

Rare earth element mineral deposits in the United States

Because of their unique special chemical properties, many of the metals in the group of rare earth elements (REEs) have essential applications in 21st century technologies. Examples of products that use REEs are cell phones, computers, fluorescent and light-emitting-diode lights, flat-screen television and computer monitors, and in high-strength magnets used by clean energy technologies...
Authors
Bradley S. Van Gosen, Philip L. Verplanck, Poul Emsbo
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center, Earth Mapping Resources Initiative (Earth MRI)

Titanium mineral resources in heavy-mineral sands in the Atlantic coastal plain of the southeastern United States

This study examined titanium distribution in the Atlantic Coastal Plain of the southeastern United States; the titanium is found in heavy-mineral sands that include the minerals ilmenite (Fe2+TiO3), rutile (TiO2), or leucoxene (an alteration product of ilmenite). Deposits of heavy-mineral sands in ancient and modern coastal plains are a significant feedstock source for the titanium...
Authors
Bradley S. Van Gosen, Karl J. Ellefsen
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Assessment of undiscovered resources in calcrete uranium deposits, Southern High Plains region of Texas, New Mexico, and Oklahoma, 2017

The U.S. Geological Survey estimates a mean of 40 million pounds of in-place uranium oxide (U3O8) remaining as potential undiscovered resources in the Southern High Plains region of Texas, New Mexico, and Oklahoma. This estimate used a geology-based assessment method specific to calcrete uranium deposits.
Authors
Susan M. Hall, Mark J. Mihalasky, Bradley S. Van Gosen
By
Energy Resources Program, Mineral Resources Program, Central Energy Resources Science Center, Geology, Minerals, Energy, and Geophysics Science Center, Geology, Geophysics, and Geochemistry Science Center
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