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Denver Microbeam Laboratory: Mineral Resources Research Support

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By Geology, Geophysics, and Geochemistry Science Center April 6, 2018

The USGS Denver Microbeam Laboratory provides chemical analysis and characterization of rocks, minerals, and environmental samples in support of a wide variety of USGS projects related to mineral resources, including research projects funded by the USGS Mineral Resources Program. The research applications for these projects range from mineral resource research and assessments, to geologic mapping and geochronology, to geologic hazards and radioactive waste disposal, to the environment and human health.

Additional Information

For additional information on the laboratory facilities and equipment, visit the Denver Microbeam Laboratory site.

The Denver Microbeam Laboratory has provided support to these Mineral Resources Program projects:

Filter Total Items: 27

Below are data or web applications associated with this project.

Filter Total Items: 22
No Result Found

Below are multimedia items associated with this project.

No results found.

Below are publications associated with this project.

Filter Total Items: 76

Chemistry, mineralogy, and petrology of amphibole in Mount St. Helens 2004-2006 dacite Chemistry, mineralogy, and petrology of amphibole in Mount St. Helens 2004-2006 dacite

Textural, compositional, and mineralogical data are reported and interpreted for a large population of clinoamphibole phenocrysts in 22 samples from the seven successive dacite spines erupted at Mount St. Helens between October 2004 and January 2006. Despite the uniformity in bulk composition of magma erupted since 2004, there is striking textural and compositional diversity among...
Authors
Carl Thornber, John Pallister, Heather Lowers, Michael Rowe, Charlie Mandeville, Gregory Meeker
By
Natural Hazards Mission Area, Volcano Hazards Program, Volcano Science Center, Geology, Geophysics, and Geochemistry Science Center, Denver Microbeam Laboratory

Petrology of the 2004-2006 Mount St. Helens lava dome -- implications for magmatic plumbing and eruption triggering Petrology of the 2004-2006 Mount St. Helens lava dome -- implications for magmatic plumbing and eruption triggering

Eighteen years after dome-forming eruptions ended in 1986, and with little warning, Mount St. Helens began to erupt again in October 2004. During the ensuing two years, the volcano extruded more than 80×106 m3 of gas-poor, crystal-rich dacite lava. The 2004-6 dacite is remarkably uniform in bulk-rock composition and, at 65 percent SiO2 , among the richest in silica and most depleted in
Authors
John Pallister, Carl Thornber, Katharine V. Cashman, Michael Clynne, Heather Lowers, Charlie Mandeville, Isabelle Brownfield, Gregory Meeker
By
Natural Hazards Mission Area, Volcano Hazards Program, Volcano Science Center, Geology, Geophysics, and Geochemistry Science Center, Denver Microbeam Laboratory

Trace elements in hydrothermal quartz: Relationships to cathodoluminescent textures and insights into vein formation Trace elements in hydrothermal quartz: Relationships to cathodoluminescent textures and insights into vein formation

High-resolution electron microprobe maps show the distribution of Ti, Al, Ca, K, and Fe among quartz growth zones revealed by scanning electron microscope-cathodoluminescence (SEM-CL) from 12 hydrothermal ore deposits formed between ???100 and e1750 ??C. The maps clearly show the relationships between trace elements and CL intensity in quartz. Among all samples, no single trace element
Authors
B.G. Rusk, H.A. Lowers, M.H. Reed

Relation Between Solid-Phase and Dissolved Arsenic in the Ground-Water System Underlying Northern Preble County, Ohio Relation Between Solid-Phase and Dissolved Arsenic in the Ground-Water System Underlying Northern Preble County, Ohio

The U.S. Geological Survey (USGS), in cooperation with the Miami Conservancy District, collected and analyzed samples of the aquifer materials and ground water from multiple depths at two sites in northern Preble County, Ohio. The aquifer materials included glacial deposits and Silurian carbonate bedrock. In the study area, elevated arsenic concentrations have been detected in ground...
Authors
Mary Thomas, Sharon Diehl, Bruce Pletsch, Thomas Schumann, Richard R. Pavey, E. Swinford
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center

Below are news stories associated with this project.

The USGS Denver Microbeam Laboratory provides chemical analysis and characterization of rocks, minerals, and environmental samples in support of a wide variety of USGS projects related to mineral resources, including research projects funded by the USGS Mineral Resources Program. The research applications for these projects range from mineral resource research and assessments, to geologic mapping and geochronology, to geologic hazards and radioactive waste disposal, to the environment and human health.

Additional Information

For additional information on the laboratory facilities and equipment, visit the Denver Microbeam Laboratory site.

The Denver Microbeam Laboratory has provided support to these Mineral Resources Program projects:

Filter Total Items: 27

Below are data or web applications associated with this project.

Filter Total Items: 22
No Result Found

Below are multimedia items associated with this project.

No results found.

Below are publications associated with this project.

Filter Total Items: 76

Chemistry, mineralogy, and petrology of amphibole in Mount St. Helens 2004-2006 dacite Chemistry, mineralogy, and petrology of amphibole in Mount St. Helens 2004-2006 dacite

Textural, compositional, and mineralogical data are reported and interpreted for a large population of clinoamphibole phenocrysts in 22 samples from the seven successive dacite spines erupted at Mount St. Helens between October 2004 and January 2006. Despite the uniformity in bulk composition of magma erupted since 2004, there is striking textural and compositional diversity among...
Authors
Carl Thornber, John Pallister, Heather Lowers, Michael Rowe, Charlie Mandeville, Gregory Meeker
By
Natural Hazards Mission Area, Volcano Hazards Program, Volcano Science Center, Geology, Geophysics, and Geochemistry Science Center, Denver Microbeam Laboratory

Petrology of the 2004-2006 Mount St. Helens lava dome -- implications for magmatic plumbing and eruption triggering Petrology of the 2004-2006 Mount St. Helens lava dome -- implications for magmatic plumbing and eruption triggering

Eighteen years after dome-forming eruptions ended in 1986, and with little warning, Mount St. Helens began to erupt again in October 2004. During the ensuing two years, the volcano extruded more than 80×106 m3 of gas-poor, crystal-rich dacite lava. The 2004-6 dacite is remarkably uniform in bulk-rock composition and, at 65 percent SiO2 , among the richest in silica and most depleted in
Authors
John Pallister, Carl Thornber, Katharine V. Cashman, Michael Clynne, Heather Lowers, Charlie Mandeville, Isabelle Brownfield, Gregory Meeker
By
Natural Hazards Mission Area, Volcano Hazards Program, Volcano Science Center, Geology, Geophysics, and Geochemistry Science Center, Denver Microbeam Laboratory

Trace elements in hydrothermal quartz: Relationships to cathodoluminescent textures and insights into vein formation Trace elements in hydrothermal quartz: Relationships to cathodoluminescent textures and insights into vein formation

High-resolution electron microprobe maps show the distribution of Ti, Al, Ca, K, and Fe among quartz growth zones revealed by scanning electron microscope-cathodoluminescence (SEM-CL) from 12 hydrothermal ore deposits formed between ???100 and e1750 ??C. The maps clearly show the relationships between trace elements and CL intensity in quartz. Among all samples, no single trace element
Authors
B.G. Rusk, H.A. Lowers, M.H. Reed

Relation Between Solid-Phase and Dissolved Arsenic in the Ground-Water System Underlying Northern Preble County, Ohio Relation Between Solid-Phase and Dissolved Arsenic in the Ground-Water System Underlying Northern Preble County, Ohio

The U.S. Geological Survey (USGS), in cooperation with the Miami Conservancy District, collected and analyzed samples of the aquifer materials and ground water from multiple depths at two sites in northern Preble County, Ohio. The aquifer materials included glacial deposits and Silurian carbonate bedrock. In the study area, elevated arsenic concentrations have been detected in ground...
Authors
Mary Thomas, Sharon Diehl, Bruce Pletsch, Thomas Schumann, Richard R. Pavey, E. Swinford
By
Water Resources Mission Area, Ohio-Kentucky-Indiana Water Science Center

Below are news stories associated with this project.

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