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Karen Duttweiler Kelley

Karen Kelley is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.

Science and Products

Image shows a map and key of the United States with mineral locations marked with colored shapes

Critical Minerals Mapping Initiative (CMMI)

The USGS, in combination with Geoscience Australia and the Geological Survey of Canada, formed the Critical Minerals Mapping Initiative (CMMI) in 2019 to combine expertise and collaboratively conduct research on critical mineral resources.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Critical Minerals Mapping Initiative (CMMI)

Critical Minerals Mapping Initiative (CMMI)

The USGS, in combination with Geoscience Australia and the Geological Survey of Canada, formed the Critical Minerals Mapping Initiative (CMMI) in 2019 to combine expertise and collaboratively conduct research on critical mineral resources.
Learn More
scientists in field looking at rocks

Tellurium in Igneous-related Epithermal Precious Metal Deposits in Colorado and New Mexico

The project aims to improve our understanding of the causes of tellurium enrichment in epithermal precious metal deposits, and strengthen our ability to assess the Nation's tellurium deposits. Tellurium is used in solar panel technologies and is considered a critical mineral. Epithermal deposits of this type represent a prospective future source of tellurium.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Tellurium in Igneous-related Epithermal Precious Metal Deposits in Colorado and New Mexico

Tellurium in Igneous-related Epithermal Precious Metal Deposits in Colorado and New Mexico

The project aims to improve our understanding of the causes of tellurium enrichment in epithermal precious metal deposits, and strengthen our ability to assess the Nation's tellurium deposits. Tellurium is used in solar panel technologies and is considered a critical mineral. Epithermal deposits of this type represent a prospective future source of tellurium.
Learn More
schematic depositional model black shales

Critical Metals in Black Shales

Project objectives were to improve the understanding of critical mineral enrichment in black shales and improve accuracy of resource assessments.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Critical Metals in Black Shales

Critical Metals in Black Shales

Project objectives were to improve the understanding of critical mineral enrichment in black shales and improve accuracy of resource assessments.
Learn More
Filter Total Items: 14

National-Scale Geophysical, Geologic, and Mineral Resource Data and Grids for the United States, Canada, and Australia: Data in Support of the Tri-National Critical Minerals Mapping Initiative (ver 1.1, March 2025) National-Scale Geophysical, Geologic, and Mineral Resource Data and Grids for the United States, Canada, and Australia: Data in Support of the Tri-National Critical Minerals Mapping Initiative (ver 1.1, March 2025)

National-scale geologic, geophysical, and mineral resource raster and vector data covering the United States, Canada, and Australia are provided in this data release. The data were compiled as part of the tri-national Critical Minerals Mapping Initiative (CMMI). The CMMI, established in 2019, is an international science collaboration between the U.S. Geological Survey (USGS), Geoscience
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical data for stream water samples from streams around the Pogo Deposit and Black Mountain Au occurrences, Big Delta quadrangle, Alaska, 2021 Geochemical data for stream water samples from streams around the Pogo Deposit and Black Mountain Au occurrences, Big Delta quadrangle, Alaska, 2021

This data release is the result of a hydrogeochemical sampling campaign during summer 2021 to investigate whether high resolution geochemical analysis of waters for element chemistry can be used as an exploration tool for identifying gold-rich occurrences in parts of the Big Delta B-1 and B-2 quadrangles, within the Yukon-Tanana Upland region, Alaska. Historical USGS conventional stream...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpec® NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017 HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpec® NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017

HySpex by NEO (HySpex) VNIR-1800 and SWIR-384 imaging spectrometer radiance data were acquired on September 14, 2017 at the Cresson Pit of the Cripple Creek & Victor mine in Cripple Creek, Colorado. ASD FieldSpec® NG data were collected on September 13 and 14, 2017 at two calibration sites within the Cresson Pit imaged with the HySpex imaging spectrometers. The HySpex VNIR-1800 imaging
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) geochemical data for apatite grains in rocks and stream sediments from the Taurus porphyry copper deposit area, eastern Tanacross quadrangle, Alaska Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) geochemical data for apatite grains in rocks and stream sediments from the Taurus porphyry copper deposit area, eastern Tanacross quadrangle, Alaska

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses of apatite provide trace element concentrations that support indicator mineral studies near the Taurus porphyry Cu-Mo deposit in the eastern Tanacross quadrangle, Alaska. The Taurus deposit and others in the region are mostly concealed, and traditional stream sediment samples typically show subdued...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical data for alkaline igneous rock units in the Cripple Creek district, Colorado USA: 1989-2016 Geochemical data for alkaline igneous rock units in the Cripple Creek district, Colorado USA: 1989-2016

This data release includes new major and trace element geochemical data acquired by the U.S. Geological Survey (USGS) for igneous rocks in the Cripple Creek district in Colorado. Cripple Creek is among the largest epithermal districts in the world, with more than 800 metric tons (t) Au (less than 26.4 Moz). The ores are associated spatially, temporally, and genetically with ~34 to 28 Ma...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical data for stream water and stream sediment samples from the northeast part of the Tanacross quadrangle, Alaska Geochemical data for stream water and stream sediment samples from the northeast part of the Tanacross quadrangle, Alaska

This data release is part of a study designed to test geochemical methods that best delineate known mineral deposits in the northeast part of the Tanacross 1 x 3 quadrangle, within the Yukon-Tanana Upland region, Alaska. The total area sampled is about 3,200 km2. Extensive tundra cover and patchy spruce/alder vegetation and very limited outcrop exposure characterize the area. Soils and...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Maps showing distribution of selected elements in minus-30-mesh stream sediment samples from the southern part of the Killik River 1 degree by 3 degrees quadrangle, Alaska Maps showing distribution of selected elements in minus-30-mesh stream sediment samples from the southern part of the Killik River 1 degree by 3 degrees quadrangle, Alaska

No abstract available.

Geochemistry and mineralogy of heavy-mineral concentrates from the Killik River 1 degree by 3 degrees quadrangle, Alaska Geochemistry and mineralogy of heavy-mineral concentrates from the Killik River 1 degree by 3 degrees quadrangle, Alaska

No abstract available.

Maps showing areas of potential for mineral resources in the Killik River 1° x 3° quadrangle, Alaska Maps showing areas of potential for mineral resources in the Killik River 1° x 3° quadrangle, Alaska

No abstract available.

Geochemistry of minus-100-mesh and minus-80-mesh sediment samples from the Killik River 1 degree by 3 degrees quadrangle, Alaska Geochemistry of minus-100-mesh and minus-80-mesh sediment samples from the Killik River 1 degree by 3 degrees quadrangle, Alaska

No abstract available.

Geochemistry of sediment samples from the northern part of the Chandler Lake Quadrangle, Alaska Geochemistry of sediment samples from the northern part of the Chandler Lake Quadrangle, Alaska

No abstract available.

Maps showing geochemistry of sediment samples from the southern part of the Chandler Lake Quadrangle, Alaska Maps showing geochemistry of sediment samples from the southern part of the Chandler Lake Quadrangle, Alaska

No abstract available.
Filter Total Items: 85

Critical minerals: Germanium and cobalt in the Bornite deposit, southwestern Brooks Range, Alaska Critical minerals: Germanium and cobalt in the Bornite deposit, southwestern Brooks Range, Alaska

Increasing demand for Ge and Co has led to a renewed interest and focus on advancing our understanding of the occurrence, distribution, and sequestration of these critical elements in known ore deposits. A workflow using a variety of analytical techniques and co-registered datasets has been developed and was applied to the carbonate hosted Bornite Cu-Co (Zn,-Ge) deposit in Alaska, where...
Authors
Katharina Pfaff, Garth E. Graham, Alex Jones, Karen D. Kelley
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Zinc on the edge—Isotopic and geophysical evidence that cratonic edges control world-class shale-hosted zinc-lead deposits Zinc on the edge—Isotopic and geophysical evidence that cratonic edges control world-class shale-hosted zinc-lead deposits

The North Australian Zinc Belt is the largest zinc-lead province in the world, containing three of the ten largest known individual deposits (HYC, Hilton-George Fisher, and Mount Isa). The Northern Cordillera in North America is the second largest zinc-lead province, containing a further two of the world’s top ten deposits (Red Dog and Howards Pass). Despite this world-class endowment...
Authors
David L. Huston, David C. Champion, Karol Czarnota, Jingming Duan, Matthew Hutchens, Suzanne Paradis, Mark Hoggard, Bryant Ware, George M. Gibson, Michael P. Doublier, Karen D. Kelley, Anne E. McCafferty, Nathan Hayward, Fred Richards, Svetlana Tessalina, Graham Carr
By
Geology, Geophysics, and Geochemistry Science Center

Results of automated scanning electron microscope (SEM) analyses of rock and stream sediment samples from the Taurus porphyry copper deposit area, Tanacross quadrangle, eastern Alaska Results of automated scanning electron microscope (SEM) analyses of rock and stream sediment samples from the Taurus porphyry copper deposit area, Tanacross quadrangle, eastern Alaska

Numerous porphyry copper-molybdenum-gold and epithermal deposits define a belt that extends from Eastern Alaska to western Yukon, Canada. An orientation study conducted near the Taurus porphyry deposit was designed to test methods that require minimal sample collection, preparation, and analytical time to determine the viability of indicator mineral studies as a reconnaissance...
Authors
Karen D. Kelley, Katharina Pfaff, Garth E. Graham
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Data-driven prospectivity modelling of sediment-hosted Zn-Pb mineral systems and their critical raw materials Data-driven prospectivity modelling of sediment-hosted Zn-Pb mineral systems and their critical raw materials

Demand for critical raw materials is expected to accelerate over the next few decades due to continued population growth and the shifting consumption patterns of the global economy. Sedimentary basins are important sources for critical raw materials and new discoveries of sediment–hosted Mississippi Valley–type (MVT) and/or clastic–dominated (CD) Zn–Pb deposits are likely required to...
Authors
Christopher J. M. Lawley, Anne E. McCafferty, Garth E. Graham, David L. Huston, Karen D. Kelley, Karol Czarnota, Suzanne Paradis, Jan M. Peter, Nathan Hayward, Mike Barlow, Poul Emsbo, Joshua Aaron Coyan, Carma A. San Juan, Michael G. Gadd
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Data-driven prospectivity modelling of sediment-hosted mineral systems Data-driven prospectivity modelling of sediment-hosted mineral systems

Mississippi Valley-type (MVT) and clastic-dominated (CD) deposits are important sources for Zn, Pb, Ag, and Cd as well as the critical elements Ga, Ge, In, and Sb. However, mapping the drivers, sources, pathways, and traps of MVT and CD deposits within the much larger and mostly unmineralized sedimentary basins remain some of the least understood aspects of these mineral systems. Herein...
Authors
Christopher J.M. Lawley, Anne E. McCafferty, Garth E. Graham, Michael G. Gadd, David L. Huston, Karen D. Kelley, Karol Czarnota, Suzanne Paradis, Jan M. Peter, Nathan Hayward, Mike Barlow, Poul Emsbo, Joshua A. Coyan, Carma A. San Juan
By
Geology, Geophysics, and Geochemistry Science Center

Chemical analysis of archived stream-sediment samples, Alaska Chemical analysis of archived stream-sediment samples, Alaska

Geochemical data are presented for more than 1,500 archived stream-sediment samples and accompanying quality control samples. The archived sediments were reanalyzed to improve the stream geochemical dataset for Alaska and to support ongoing U.S. Geological Survey (USGS) studies. Sediment samples were primarily from the USGS Mineral Resources Program’s sample archive in Denver, Colorado...
Authors
Bronwen Wang, George N.D. Case, Mathew Granitto, Keith A. Labay, Nora B. Shew, Andrew D. Ingraham, Jaime S. Azain, Zachary C. Bueghly, Susan M. Karl, Karen D. Kelley
By
Mineral Resources Program, Alaska Science Center, Geology, Geophysics, and Geochemistry Science Center

Science and Products

Image shows a map and key of the United States with mineral locations marked with colored shapes

Critical Minerals Mapping Initiative (CMMI)

The USGS, in combination with Geoscience Australia and the Geological Survey of Canada, formed the Critical Minerals Mapping Initiative (CMMI) in 2019 to combine expertise and collaboratively conduct research on critical mineral resources.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Critical Minerals Mapping Initiative (CMMI)

Critical Minerals Mapping Initiative (CMMI)

The USGS, in combination with Geoscience Australia and the Geological Survey of Canada, formed the Critical Minerals Mapping Initiative (CMMI) in 2019 to combine expertise and collaboratively conduct research on critical mineral resources.
Learn More
scientists in field looking at rocks

Tellurium in Igneous-related Epithermal Precious Metal Deposits in Colorado and New Mexico

The project aims to improve our understanding of the causes of tellurium enrichment in epithermal precious metal deposits, and strengthen our ability to assess the Nation's tellurium deposits. Tellurium is used in solar panel technologies and is considered a critical mineral. Epithermal deposits of this type represent a prospective future source of tellurium.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Tellurium in Igneous-related Epithermal Precious Metal Deposits in Colorado and New Mexico

Tellurium in Igneous-related Epithermal Precious Metal Deposits in Colorado and New Mexico

The project aims to improve our understanding of the causes of tellurium enrichment in epithermal precious metal deposits, and strengthen our ability to assess the Nation's tellurium deposits. Tellurium is used in solar panel technologies and is considered a critical mineral. Epithermal deposits of this type represent a prospective future source of tellurium.
Learn More
schematic depositional model black shales

Critical Metals in Black Shales

Project objectives were to improve the understanding of critical mineral enrichment in black shales and improve accuracy of resource assessments.
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center
Critical Metals in Black Shales

Critical Metals in Black Shales

Project objectives were to improve the understanding of critical mineral enrichment in black shales and improve accuracy of resource assessments.
Learn More
Filter Total Items: 14

National-Scale Geophysical, Geologic, and Mineral Resource Data and Grids for the United States, Canada, and Australia: Data in Support of the Tri-National Critical Minerals Mapping Initiative (ver 1.1, March 2025) National-Scale Geophysical, Geologic, and Mineral Resource Data and Grids for the United States, Canada, and Australia: Data in Support of the Tri-National Critical Minerals Mapping Initiative (ver 1.1, March 2025)

National-scale geologic, geophysical, and mineral resource raster and vector data covering the United States, Canada, and Australia are provided in this data release. The data were compiled as part of the tri-national Critical Minerals Mapping Initiative (CMMI). The CMMI, established in 2019, is an international science collaboration between the U.S. Geological Survey (USGS), Geoscience
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical data for stream water samples from streams around the Pogo Deposit and Black Mountain Au occurrences, Big Delta quadrangle, Alaska, 2021 Geochemical data for stream water samples from streams around the Pogo Deposit and Black Mountain Au occurrences, Big Delta quadrangle, Alaska, 2021

This data release is the result of a hydrogeochemical sampling campaign during summer 2021 to investigate whether high resolution geochemical analysis of waters for element chemistry can be used as an exploration tool for identifying gold-rich occurrences in parts of the Big Delta B-1 and B-2 quadrangles, within the Yukon-Tanana Upland region, Alaska. Historical USGS conventional stream...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpec® NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017 HySpex by NEO VNIR-1800 and SWIR-384 imaging spectrometer radiance and reflectance data, with associated ASD FieldSpec® NG calibration data, collected at Cripple Creek Victor mine, Cripple Creek, Colorado, 2017

HySpex by NEO (HySpex) VNIR-1800 and SWIR-384 imaging spectrometer radiance data were acquired on September 14, 2017 at the Cresson Pit of the Cripple Creek & Victor mine in Cripple Creek, Colorado. ASD FieldSpec® NG data were collected on September 13 and 14, 2017 at two calibration sites within the Cresson Pit imaged with the HySpex imaging spectrometers. The HySpex VNIR-1800 imaging
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) geochemical data for apatite grains in rocks and stream sediments from the Taurus porphyry copper deposit area, eastern Tanacross quadrangle, Alaska Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) geochemical data for apatite grains in rocks and stream sediments from the Taurus porphyry copper deposit area, eastern Tanacross quadrangle, Alaska

Laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) analyses of apatite provide trace element concentrations that support indicator mineral studies near the Taurus porphyry Cu-Mo deposit in the eastern Tanacross quadrangle, Alaska. The Taurus deposit and others in the region are mostly concealed, and traditional stream sediment samples typically show subdued...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical data for alkaline igneous rock units in the Cripple Creek district, Colorado USA: 1989-2016 Geochemical data for alkaline igneous rock units in the Cripple Creek district, Colorado USA: 1989-2016

This data release includes new major and trace element geochemical data acquired by the U.S. Geological Survey (USGS) for igneous rocks in the Cripple Creek district in Colorado. Cripple Creek is among the largest epithermal districts in the world, with more than 800 metric tons (t) Au (less than 26.4 Moz). The ores are associated spatially, temporally, and genetically with ~34 to 28 Ma...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Geochemical data for stream water and stream sediment samples from the northeast part of the Tanacross quadrangle, Alaska Geochemical data for stream water and stream sediment samples from the northeast part of the Tanacross quadrangle, Alaska

This data release is part of a study designed to test geochemical methods that best delineate known mineral deposits in the northeast part of the Tanacross 1 x 3 quadrangle, within the Yukon-Tanana Upland region, Alaska. The total area sampled is about 3,200 km2. Extensive tundra cover and patchy spruce/alder vegetation and very limited outcrop exposure characterize the area. Soils and...
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Maps showing distribution of selected elements in minus-30-mesh stream sediment samples from the southern part of the Killik River 1 degree by 3 degrees quadrangle, Alaska Maps showing distribution of selected elements in minus-30-mesh stream sediment samples from the southern part of the Killik River 1 degree by 3 degrees quadrangle, Alaska

No abstract available.

Geochemistry and mineralogy of heavy-mineral concentrates from the Killik River 1 degree by 3 degrees quadrangle, Alaska Geochemistry and mineralogy of heavy-mineral concentrates from the Killik River 1 degree by 3 degrees quadrangle, Alaska

No abstract available.

Maps showing areas of potential for mineral resources in the Killik River 1° x 3° quadrangle, Alaska Maps showing areas of potential for mineral resources in the Killik River 1° x 3° quadrangle, Alaska

No abstract available.

Geochemistry of minus-100-mesh and minus-80-mesh sediment samples from the Killik River 1 degree by 3 degrees quadrangle, Alaska Geochemistry of minus-100-mesh and minus-80-mesh sediment samples from the Killik River 1 degree by 3 degrees quadrangle, Alaska

No abstract available.

Geochemistry of sediment samples from the northern part of the Chandler Lake Quadrangle, Alaska Geochemistry of sediment samples from the northern part of the Chandler Lake Quadrangle, Alaska

No abstract available.

Maps showing geochemistry of sediment samples from the southern part of the Chandler Lake Quadrangle, Alaska Maps showing geochemistry of sediment samples from the southern part of the Chandler Lake Quadrangle, Alaska

No abstract available.
Filter Total Items: 85

Critical minerals: Germanium and cobalt in the Bornite deposit, southwestern Brooks Range, Alaska Critical minerals: Germanium and cobalt in the Bornite deposit, southwestern Brooks Range, Alaska

Increasing demand for Ge and Co has led to a renewed interest and focus on advancing our understanding of the occurrence, distribution, and sequestration of these critical elements in known ore deposits. A workflow using a variety of analytical techniques and co-registered datasets has been developed and was applied to the carbonate hosted Bornite Cu-Co (Zn,-Ge) deposit in Alaska, where...
Authors
Katharina Pfaff, Garth E. Graham, Alex Jones, Karen D. Kelley
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Zinc on the edge—Isotopic and geophysical evidence that cratonic edges control world-class shale-hosted zinc-lead deposits Zinc on the edge—Isotopic and geophysical evidence that cratonic edges control world-class shale-hosted zinc-lead deposits

The North Australian Zinc Belt is the largest zinc-lead province in the world, containing three of the ten largest known individual deposits (HYC, Hilton-George Fisher, and Mount Isa). The Northern Cordillera in North America is the second largest zinc-lead province, containing a further two of the world’s top ten deposits (Red Dog and Howards Pass). Despite this world-class endowment...
Authors
David L. Huston, David C. Champion, Karol Czarnota, Jingming Duan, Matthew Hutchens, Suzanne Paradis, Mark Hoggard, Bryant Ware, George M. Gibson, Michael P. Doublier, Karen D. Kelley, Anne E. McCafferty, Nathan Hayward, Fred Richards, Svetlana Tessalina, Graham Carr
By
Geology, Geophysics, and Geochemistry Science Center

Results of automated scanning electron microscope (SEM) analyses of rock and stream sediment samples from the Taurus porphyry copper deposit area, Tanacross quadrangle, eastern Alaska Results of automated scanning electron microscope (SEM) analyses of rock and stream sediment samples from the Taurus porphyry copper deposit area, Tanacross quadrangle, eastern Alaska

Numerous porphyry copper-molybdenum-gold and epithermal deposits define a belt that extends from Eastern Alaska to western Yukon, Canada. An orientation study conducted near the Taurus porphyry deposit was designed to test methods that require minimal sample collection, preparation, and analytical time to determine the viability of indicator mineral studies as a reconnaissance...
Authors
Karen D. Kelley, Katharina Pfaff, Garth E. Graham
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Data-driven prospectivity modelling of sediment-hosted Zn-Pb mineral systems and their critical raw materials Data-driven prospectivity modelling of sediment-hosted Zn-Pb mineral systems and their critical raw materials

Demand for critical raw materials is expected to accelerate over the next few decades due to continued population growth and the shifting consumption patterns of the global economy. Sedimentary basins are important sources for critical raw materials and new discoveries of sediment–hosted Mississippi Valley–type (MVT) and/or clastic–dominated (CD) Zn–Pb deposits are likely required to...
Authors
Christopher J. M. Lawley, Anne E. McCafferty, Garth E. Graham, David L. Huston, Karen D. Kelley, Karol Czarnota, Suzanne Paradis, Jan M. Peter, Nathan Hayward, Mike Barlow, Poul Emsbo, Joshua Aaron Coyan, Carma A. San Juan, Michael G. Gadd
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Data-driven prospectivity modelling of sediment-hosted mineral systems Data-driven prospectivity modelling of sediment-hosted mineral systems

Mississippi Valley-type (MVT) and clastic-dominated (CD) deposits are important sources for Zn, Pb, Ag, and Cd as well as the critical elements Ga, Ge, In, and Sb. However, mapping the drivers, sources, pathways, and traps of MVT and CD deposits within the much larger and mostly unmineralized sedimentary basins remain some of the least understood aspects of these mineral systems. Herein...
Authors
Christopher J.M. Lawley, Anne E. McCafferty, Garth E. Graham, Michael G. Gadd, David L. Huston, Karen D. Kelley, Karol Czarnota, Suzanne Paradis, Jan M. Peter, Nathan Hayward, Mike Barlow, Poul Emsbo, Joshua A. Coyan, Carma A. San Juan
By
Geology, Geophysics, and Geochemistry Science Center

Chemical analysis of archived stream-sediment samples, Alaska Chemical analysis of archived stream-sediment samples, Alaska

Geochemical data are presented for more than 1,500 archived stream-sediment samples and accompanying quality control samples. The archived sediments were reanalyzed to improve the stream geochemical dataset for Alaska and to support ongoing U.S. Geological Survey (USGS) studies. Sediment samples were primarily from the USGS Mineral Resources Program’s sample archive in Denver, Colorado...
Authors
Bronwen Wang, George N.D. Case, Mathew Granitto, Keith A. Labay, Nora B. Shew, Andrew D. Ingraham, Jaime S. Azain, Zachary C. Bueghly, Susan M. Karl, Karen D. Kelley
By
Mineral Resources Program, Alaska Science Center, Geology, Geophysics, and Geochemistry Science Center
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