Microscopic gold and lead particles surrounded by organic and phosphorus-rich material in a municipal biosolids sample (combined surface topography and atomic weight images).
Heather A Lowers
Heather Lowers is a Research Geologist with the Geology, Geophysics, and Geochemistry Science Center.
Science and Products
Critical Elements in Carbonatites: From Exploration Targets to Element Distribution
Critical elements are essential to the modern economy and have potential supply chain disruptions, but compared to most base and precious metals, little work has been done in understanding ore-grade enrichments. Carbonatites are the primary source of the worlds light rare earth elements and niobium, and a potential source for heavy rare earths, scandium, tantalum, and thorium. Project objectives...
Denver Microbeam Laboratory: Mineral Resources Research Support
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...
Department of Defense Lung Study
Between 2003 and the present, 2.2 million U.S. military personnel have been deployed to Iraq and Afghanistan. These deployers have been variably exposed to desert dusts, smoke from burn pits, and urban particulate matter, and some have developed constrictive bronchiolitis. A study was undertaken to determine what, if any, markers were statistically different among biopsied lung tissue sections...
Microscopic Gold and Lead Particles
Microscopic gold and lead particles surrounded by organic and phosphorus-rich material in a municipal biosolids sample (combined surface topography and atomic weight images).
Fuzzy Balls
Backscattered electron image of radiating fibers of kaolinite growing in volcanic rock altered by fluids connected to hot springs near Lassen Volcanic National Park. Associated with the kaolinite are rounded masses of silica and iron oxides (bright areas) that formed from pyrite. The composition and textures help us evaluate the origin of ore deposits and
Backscattered electron image of radiating fibers of kaolinite growing in volcanic rock altered by fluids connected to hot springs near Lassen Volcanic National Park. Associated with the kaolinite are rounded masses of silica and iron oxides (bright areas) that formed from pyrite. The composition and textures help us evaluate the origin of ore deposits and
Science and Products
Critical Elements in Carbonatites: From Exploration Targets to Element Distribution
Critical elements are essential to the modern economy and have potential supply chain disruptions, but compared to most base and precious metals, little work has been done in understanding ore-grade enrichments. Carbonatites are the primary source of the worlds light rare earth elements and niobium, and a potential source for heavy rare earths, scandium, tantalum, and thorium. Project objectives...
Denver Microbeam Laboratory: Mineral Resources Research Support
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...
Department of Defense Lung Study
Between 2003 and the present, 2.2 million U.S. military personnel have been deployed to Iraq and Afghanistan. These deployers have been variably exposed to desert dusts, smoke from burn pits, and urban particulate matter, and some have developed constrictive bronchiolitis. A study was undertaken to determine what, if any, markers were statistically different among biopsied lung tissue sections...
Microscopic Gold and Lead Particles
Microscopic gold and lead particles surrounded by organic and phosphorus-rich material in a municipal biosolids sample (combined surface topography and atomic weight images).
Microscopic gold and lead particles surrounded by organic and phosphorus-rich material in a municipal biosolids sample (combined surface topography and atomic weight images).
Fuzzy Balls
Backscattered electron image of radiating fibers of kaolinite growing in volcanic rock altered by fluids connected to hot springs near Lassen Volcanic National Park. Associated with the kaolinite are rounded masses of silica and iron oxides (bright areas) that formed from pyrite. The composition and textures help us evaluate the origin of ore deposits and
Backscattered electron image of radiating fibers of kaolinite growing in volcanic rock altered by fluids connected to hot springs near Lassen Volcanic National Park. Associated with the kaolinite are rounded masses of silica and iron oxides (bright areas) that formed from pyrite. The composition and textures help us evaluate the origin of ore deposits and