A5051428824- Mine drainage and remediation techniques
- Groundwater and Isotope Geochemistry
- Water Quality and Resources Studies
- Arsenic contamination and mitigation
- Groundwater flow and contamination studies
- Geochemistry and Geologic Mapping
- Heavy metals in environment
- Chemical and Physical Properties in Aqueous Solutions
- Metal Extraction and Bioleaching
- Hydrocarbon exploration and reservoir analysis
- Minerals Flotation and Separation Techniques
- Fluoride Effects and Removal
- Radioactive element chemistry and processing
- Mercury impact and mitigation studies
- Coal and Its By-products
- Water Quality and Pollution Assessment
- Electrochemical Analysis and Applications
- Clay minerals and soil interactions
- Crystallization and Solubility Studies
- Calcium Carbonate Crystallization and Inhibition
- Iron oxide chemistry and applications
- Soil and Water Nutrient Dynamics
- Fault Detection and Control Systems
- Mining Techniques and Economics
- Geological and Geochemical Analysis
United States Geological Survey
2011-2024
University of Virginia
1977-2015
Office Régional de Mise en Valeur Agricole de Ouarzazate
2014
Institute of Geochemistry
2014
Institute of Mineralogy
2014
Queen's University
2014
Friedrich Schiller University Jena
2014
Geological Society of America
2010
Trent University
2007
Pacific Island Ecosystems Research Center
2006
The Richmond Mine of the Iron Mountain copper deposit contains some most acid mine waters ever reported. Values pH have been measured as low -3.6, combined metal concentrations high 200 g/liter, and sulfate 760 g/liter. Copious quantities soluble salts such melanterite, chalcanthite, coquimbite, rhomboclase, voltaite, copiapite, halotrichite identified, these are forming from negative-pH waters. Geochemical calculations show that, under a mine-plugging remediation scenario, would dissolve...
Extremely acidic mine waters with pH values as low −3.6, total dissolved metal concentrations high 200 g/L, and sulfate 760 have been encountered underground in the Richmond Mine at Iron Mountain, CA. These are most known. The measurements were obtained by using Pitzer method to define for calibration of glass membrane electrodes. below 0.5 electrodes becomes strongly nonlinear but is reproducible a −4. Numerous efflorescent minerals found forming from these acid waters. extreme formed...
A FORTRAN 77 version of the PL/1 computer program for geochemical model WATEQ2, which computes major and trace element speciation mineral saturation natural waters, has been developed.The code WATEQ4F adapted to execute on an IBM PC1 or compatible microcomputer with without 8087, 80287 80387 numeric coprocessor and, if recompilation is desired, a full-featured compiler.The calculation procedure identical installed many mainframes minicomputers.Several data base revisions have made that...
Research Article| December 01, 2011 Mine Waters: Acidic to Circmneutral D. Kirk Nordstrom *U.S. Geological Survey, 3215 Marine Street, Boulder, CO 80303, USAE-mail: dkn@usgs.gov Search for other works by this author on: GSW Google Scholar Author and Article Information Publisher: Mineralogical Society of America First Online: 09 Mar 2017 Online ISSN: 1811-5217 Print 1811-5209 © the Elements (2011) 7 (6): 393–398. https://doi.org/10.2113/gselements.7.6.393 history Cite View This Citation Add...
Mono-, di-, tri-, and tetrathioarsenate, as well methylated arsenic oxy- thioanions, were determined besides arsenite arsenate in geothermal waters of Yellowstone National Park using anion-exchange chroma tography inductively coupled plasma mass spectrometry. Retention time match with synthetic standards, measured S:As ratios, molecular electrospray spectra support the identification. Acidification was unsuitable for species preservation sulfidic waters, HCl addition causing loss total...
Speciation calculations for aluminum, in water samples taken from a drainage basin containing acid mine waters, demonstrate distinct transition conservative behavior pH below 4.6 to nonconservative above 4.9. This corresponds the pK first hydrolysis constant of aqueous aluminum ion and appears be consistent phenomenon independent field location, ionic strength, sulfate concentration. Nonconservative is closely correlated with equilibrium solubility microcrystalline gibbsite or amorphous hydroxide.
From the contents Theoretical Background.- Hydrogeochemical Modeling Programs.- Exercises.- Solutions.- References.- Index.
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTInteraction of acid mine drainage with waters and sediments West Squaw Creek in the Shasta Mining District, CaliforniaLorraine H. Filipek, D. Kirk. Nordstrom, Walter FicklinCite this: Environ. Sci. Technol. 1987, 21, 4, 388–396Publication Date (Print):April 1, 1987Publication History Published online1 May 2002Published inissue 1 April 1987https://pubs.acs.org/doi/10.1021/es00158a009https://doi.org/10.1021/es00158a009research-articleACS...
Research Article| January 01, 2014 Thermodynamic Properties for Arsenic Minerals and Aqueous Species D. Kirk Nordstrom; Nordstrom U.S. Geological Survey, 3215 Marine St., Boulder, Colorado 80303, U.S.A., dkn@usgs.gov Search other works by this author on: GSW Google Scholar Juraj Majzlan; Majzlan Friedrich-Schiller-Universität Jena, Chemisch-Geowissenschaftliche Fakultät, Institut für Geowissenschaften, Carl-Zeiss-Promenade 10, 07745 Germany, Juraj.Majzlan@uni-jena.de Erich Königsberger...
A FORTRAN 77 version of the PL/1 computer program for geochemical model WATEQ2, which computes major and trace element speciation mineral saturation natural waters has been developed. The code (WATEQ4F) adapted to execute on an IBM PC or compatible microcomputer. Two versions are available, one operating with Professional 8087 89287 numeric coprocessor, operates without a coprocessor using Microsoft 77. calculation procedure is identical installed many mainframes minicomputers. Limited data...