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Bradley S Van Gosen (Former Employee)

Science and Products

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

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

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 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 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 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 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 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 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

Surficial Geologic Map of the Mount Hopkins and northern part of the San Cayetano Mountains 7.5’ Quadrangles, Santa Cruz and Pima Counties, Arizona 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 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 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 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 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 Maps showing the coal geology of the Sarpy Creek area, Big Horn and Treasure counties, 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: 101

Solution-collapse breccia pipe uranium deposits of the southern Colorado Plateau, northwestern Arizona, USA Solution-collapse breccia pipe uranium deposits of the southern Colorado Plateau, northwestern Arizona, USA

Some of the highest-grade uranium deposits in the United States occur in breccia pipes that formed by solution and collapse of sedimentary strata, which occur in the southern portion of the Colorado Plateau in northwestern Arizona. The host breccia pipes are up to 1200 m in vertical extent, average about 90 m in diameter, and can cross-cut strata from their base in the Mississippian...
Authors
Bradley S. Van Gosen, Susan Hall, Craig A. Johnson, William Benzel
By
Energy Resources Program, Central Energy Resources Science Center, Geology, Geophysics, and Geochemistry Science Center

Sandstone-hosted uranium deposits of the Colorado Plateau, USA 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, 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 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 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 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

Science and Products

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

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

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 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 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 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 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 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 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

Surficial Geologic Map of the Mount Hopkins and northern part of the San Cayetano Mountains 7.5’ Quadrangles, Santa Cruz and Pima Counties, Arizona 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 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 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 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 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 Maps showing the coal geology of the Sarpy Creek area, Big Horn and Treasure counties, 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: 101

Solution-collapse breccia pipe uranium deposits of the southern Colorado Plateau, northwestern Arizona, USA Solution-collapse breccia pipe uranium deposits of the southern Colorado Plateau, northwestern Arizona, USA

Some of the highest-grade uranium deposits in the United States occur in breccia pipes that formed by solution and collapse of sedimentary strata, which occur in the southern portion of the Colorado Plateau in northwestern Arizona. The host breccia pipes are up to 1200 m in vertical extent, average about 90 m in diameter, and can cross-cut strata from their base in the Mississippian...
Authors
Bradley S. Van Gosen, Susan Hall, Craig A. Johnson, William Benzel
By
Energy Resources Program, Central Energy Resources Science Center, Geology, Geophysics, and Geochemistry Science Center

Sandstone-hosted uranium deposits of the Colorado Plateau, USA 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, 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 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 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 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
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