Publications
Filter Total Items: 76
Not-so-routine electron probe microanalyses of jarosite
No abstract available.
Authors
Heather Lowers, George A. Desborough, Jane M. Hammarstrom, Gregg A. Swayze, Kathleen S. Smith, Sharon F. Diehl
Characterization and modes of occurrence of elements in feed coal and coal combustion products from a power plant utilizing low-sulfur coal from the Powder River Basin, Wyoming
The U.S. Geological Survey and the University of Kentucky Center for Applied Energy Research are collaborating with an Indiana utility company to determine the physical and chemical properties of feed coal and coal combustion products from a coal-fired power plant. The Indiana power plant utilizes a low-sulfur (0.23 to 0.47 weight percent S) and lowash (4.9 to 6.3 weight percent ash) subbituminous
Authors
Michael E. Brownfield, James D. Cathcart, Ronald H. Affolter, Isabelle K. Brownfield, Cynthia A. Rice, Joseph T. O'Connor, Robert A. Zielinski, John H. Bullock, James C. Hower, Gregory P. Meeker
Particle atlas of World Trade Center dust
The United States Environmental Protection Agency (EPA) has begun a reassessment of the presence of World Trade Center (WTC) dust in residences, public buildings, and office spaces in New York City, New York. Background dust samples collected from residences, public buildings, and office spaces will be analyzed by multiple laboratories for the presence of WTC dust. Other laboratories are currently
Authors
Heather Lowers, Gregory P. Meeker
Analysis of background residential dust for World Trade Center signature components using scanning electron microscopy and x-ray microanalysis
No abstract available.
Authors
Heather Lowers, Gregory P. Meeker, Isabelle K. Brownfield
Determination of a diagnostic signature for World Trade Center dust using scanning electron microscopy point counting techniques
No abstract available.
Authors
Gregory P. Meeker, Amy M. Bern, Heather Lowers, Isabelle K. Brownfield
Questa baseline and pre-mining ground-water quality invistigation. 13. Mineral microscopy and chemistry of mined and unmined porphyry molybdenum mineralization along the Red River, New Mexico: Implications for ground- and surface-water quality
This report is one in a series presenting results of an interdisciplinary U.S. Geological Survey (USGS) study of ground-water quality in the lower Red River watershed prior to open-pit and underground molybdenite mining at Molycorp's Questa mine. The stretch of the Red River watershed that extends from just upstream of the town of Red River to just above the town of Questa includes several mineral
Authors
Geoff Plumlee, Heather Lowers, Steve Ludington, Alan Koenig, Paul Briggs
By
Water Resources Mission Area, Ecosystems Mission Area, Mineral Resources Program, Toxic Substances Hydrology, Environmental Health Program, Geology, Geophysics, and Geochemistry Science Center, Geology, Minerals, Energy, and Geophysics Science Center, New Mexico Water Science Center, Denver Microbeam Laboratory
The composition of coexisting jarosite-group minerals and water from the Richmond mine, Iron Mountain, California
Jarosite-group minerals accumulate in the form of stalactites and fine-grained mud on massive pyrite in the D drift of the Richmond mine, Iron Mountain, California. Water samples were collected by placing beakers under the dripping stalactites and by extracting pore water from the mud using a centrifuge. The water is rich in Fe3+ and SO4 2−, with a pH of approximately 2.1, which is significantly h
Authors
Heather E. Jamieson, Clare Robinson, Charles N. Alpers, D. Kirk Nordstrom, Alexei Poustovetov, Heather A. Lowers
Preliminary report on using imaging spectroscopy to map ultramafic rocks, serpentinites, and tremolite-actinolite-bearing rocks in California
Airborne Visible/InfraRed Imaging Spectrometer (AVIRIS) data were collected in approximately 3- kilometer-wide swaths over selected areas in El Dorado and Plumas Counties that contain serpentinite and ultramafic rocks as part of an experiment to determine if potentially asbestos-bearing rocks could be identified spectrally. M ineral maps created from the AVIRIS data were used successfully to delin
Authors
Gregg A. Swayze, Chris T. Higgins, John P. Clinkenbeard, Raymond F. Kokaly, Roger N. Clark, Gregory P. Meeker, Stephen J. Sutley
A USGS Study of Talc Deposits and Associated Amphibole Asbestos Within Mined Deposits of the Southern Death Valley Region, California
No abstract available.
Authors
Bradley S. Van Gosen, Heather Lowers, Stephen J. Sutley
The composition and morphology of amphiboles from the Rainy Creek complex, near Libby, Montana
Thirty samples of amphibole-rich rock from the largest mined vermiculite deposit in the world in the Rainy Creek alkaline-ultramafic complex near Libby, Montana, were collected and analyzed. The amphibole-rich rock is the suspected cause of an abnormally high number of asbestos-related diseases reported in the residents of Libby, and in former mine and mill workers. The amphibole-rich samples were
Authors
G.P. Meeker, A.M. Bern, I. K. Brownfield, H.A. Lowers, S. J. Sutley, T.M. Hoefen, J.S. Vance
Tabulation of asbestos-related terminology
The term asbestos has been defined in numerous publications including many State and Federal regulations. The definition of asbestos often varies depending on the source or publication in which it is used. Differences in definitions also exist for the asbestos-related terms acicular, asbestiform, cleavage, cleavage fragment, fiber, fibril, fibrous, and parting. An inexperienced reader of the asbes
Authors
Heather Lowers, Greg Meeker
USGS environmental studies of the World Trade Center area, New York City, after September 11, 2001
Two days after the September 11, 2001, attack on World Trade Center (WTC), the U.S. Geological Survey (USGS) was asked by the U.S. Environmental Protection Agency (EPA) and the U.S. Public Health Service to conduct a remote sensing and mineralogical characterization study of lower Manhattan around the WTC. This study, conducted in cooperation with the National Aeronautics and Space Administration
Authors
Roger N. Clark, Greg Meeker, Geoffrey S. Plumlee, Gregg A. Swayze