Frank T. Dulong
Frank Dulong is a Scientist Emeritus with the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA.
Science and Products
Filter Total Items: 22
Characterization of rock samples and mineralogical controls on leachates
Rocks associated with coal beds typically include shale, sandstone, and (or) limestone. In addition to common rock-forming minerals, all of these rock types may contain sulfide and sulfate minerals, various carbonate minerals, and organic material. These different minerals have inherently different solubility characteristics, as well as different acid-generating or acid-neutralizing potentials. Th
Authors
Jane M. Hammarstrom, Charles A. Cravotta, Daniel G. Galeone, John C. Jackson, Frank T. Dulong
Selenium Concentrations in Middle Pennsylvanian Coal-Bearing Strata in the Central Appalachian Basin
Introduction
This report provides the results of a reconnaissance-level investigation of selenium (Se) concentrations in Middle Pennsylvanian coal-bearing strata in the central Appalachian basin. Bryant and others (2002) reported enrichments of Se concentrations in streams draining areas disturbed by surface mining relative to Se concentrations in streams that drain undisturbed areas; the study
Authors
Sandra G. Neuzil, Frank T. Dulong, C. Blaine Cecil, Nick Fedorko, John J. Renton, D.K. Bhumbla
Analytical results from samples collected during coal-bed methane exploration drilling in Caldwell Parish, Louisiana
In 2001, and 2002, the U.S. Geological Survey (USGS) and the Louisiana Geological Survey (LGS), through a Cooperative Research and Development Agreement (CRADA) with Devon SFS Operating, Inc. (Devon), participated in an exploratory drilling and coring program for coal-bed methane in north-central Louisiana. The USGS and LGS collected 25 coal core and cuttings samples from two coal-bed methane test
Authors
Peter D. Warwick, F. Clayton Breland, Paul C. Hackley, Frank T. Dulong, Douglas J. Nichols, Alexander W. Karlsen, R. Marc Bustin, Charles E. Barker, Jason C. Willett, Michael H. Trippi
Spatial trends in ash yield, sulfur, selenium, and other selected trace element concentrations in coal beds of the Appalachian Plateau region, U.S.A.
No abstract available.
Authors
Sandra G. Neuzil, Frank T. Dulong, C. Blaine Cecil
Chemical and mineralogical analyses of coal-bearing strata in the Appalachian Basin
No abstract available.
Authors
Frank T. Dulong, Nick Fedorko, John J. Renton, C. Blaine Cecil
X-ray powder diffraction
This handout provides background on the use and theory of X-ray powder diffraction. Examples of applications of this method to geologic studies are provided.
Authors
Frank T. Dulong, John C. Jackson
Origin and significance of high nickel and chromium concentrations in pliocene lignite of the Kosovo Basin, Serbia
Trace element data from 59 Pliocene lignite cores from the lignite field in the Kosovo Basin, southern Serbia, show localized enrichment of Ni and Cr (33-304 ppm and 8-176 ppm, respectively, whole-coal basis). Concentrations of both elements decrease from the western and southern boundaries of the lignite field. Low-temperature ash and polished coal pellets of selected bench and whole-coal samples
Authors
L. Ruppert, R. Finkelman, E. Boti, M. Milosavljevic, S. Tewalt, N. Simon, F. Dulong
Allogenic and autogenic controls on sedimentation in the central Sumatra basin as an analogue for Pennsylvanian coal-bearing strata in the Appalachian basin
Recent sedimentation patterns in the central Sumatra basin, Republic of Indonesia, may help to explain the cyclic stratigraphy of the Pennsylvanian System of the eastern United States. Modern influx of fluvial siliciclastic sediment to the epeiric seas of the Sunda shelf, including the Strait of Malacca, appears to be highly restricted by rain forest cover within the ever-wet climate belt of equat
Authors
C. Blaine Cecil, Frank T. Dulong, James C. Cobb
Superparamagnetic Fe3O4 particles formed by oxidation of pyrite heated in an anoxic atmosphere
As a follow-up to previous gas analysis experiments in which pyrite was heated to 681 K in an anoxic (oxygen starved) atmosphere, the first oxidation product, FeSO4, was studied as a bulk material. No decomposition of FeSO4 to Fe3O4 was observed in the temperature range studied. The lack of decomposition of bulk FeSO4 to Fe3O4 suggests that FeS2 oxidizes directly to Fe3O4, or that FeSO4, FeS2 and
Authors
A. N. Thorpe, F. E. Senftle, R. Talley, S. Hetherington, F. Dulong
The 57Fe Mössbauer parameters of pyrite and marcasite with different provenances
Eighteen pyrite and twelve marcasite samples which have different provenances have been investigated to determine the systematics of the influence of mineralogical and geological factors on the 57Fe Mössbauer spectra at 298 K. The following results have been obtained: there is no ambiguity in distinguishing single phase pyrite from single phase marcasite by means of 57Fe Mössbauer spectroscopy at
Authors
B.J. Evans, R. G. Johnson, F. E. Senftle, C. B. Cecil, F. Dulong
Science and Products
Filter Total Items: 22
Characterization of rock samples and mineralogical controls on leachates
Rocks associated with coal beds typically include shale, sandstone, and (or) limestone. In addition to common rock-forming minerals, all of these rock types may contain sulfide and sulfate minerals, various carbonate minerals, and organic material. These different minerals have inherently different solubility characteristics, as well as different acid-generating or acid-neutralizing potentials. Th
Authors
Jane M. Hammarstrom, Charles A. Cravotta, Daniel G. Galeone, John C. Jackson, Frank T. Dulong
Selenium Concentrations in Middle Pennsylvanian Coal-Bearing Strata in the Central Appalachian Basin
Introduction
This report provides the results of a reconnaissance-level investigation of selenium (Se) concentrations in Middle Pennsylvanian coal-bearing strata in the central Appalachian basin. Bryant and others (2002) reported enrichments of Se concentrations in streams draining areas disturbed by surface mining relative to Se concentrations in streams that drain undisturbed areas; the study
Authors
Sandra G. Neuzil, Frank T. Dulong, C. Blaine Cecil, Nick Fedorko, John J. Renton, D.K. Bhumbla
Analytical results from samples collected during coal-bed methane exploration drilling in Caldwell Parish, Louisiana
In 2001, and 2002, the U.S. Geological Survey (USGS) and the Louisiana Geological Survey (LGS), through a Cooperative Research and Development Agreement (CRADA) with Devon SFS Operating, Inc. (Devon), participated in an exploratory drilling and coring program for coal-bed methane in north-central Louisiana. The USGS and LGS collected 25 coal core and cuttings samples from two coal-bed methane test
Authors
Peter D. Warwick, F. Clayton Breland, Paul C. Hackley, Frank T. Dulong, Douglas J. Nichols, Alexander W. Karlsen, R. Marc Bustin, Charles E. Barker, Jason C. Willett, Michael H. Trippi
Spatial trends in ash yield, sulfur, selenium, and other selected trace element concentrations in coal beds of the Appalachian Plateau region, U.S.A.
No abstract available.
Authors
Sandra G. Neuzil, Frank T. Dulong, C. Blaine Cecil
Chemical and mineralogical analyses of coal-bearing strata in the Appalachian Basin
No abstract available.
Authors
Frank T. Dulong, Nick Fedorko, John J. Renton, C. Blaine Cecil
X-ray powder diffraction
This handout provides background on the use and theory of X-ray powder diffraction. Examples of applications of this method to geologic studies are provided.
Authors
Frank T. Dulong, John C. Jackson
Origin and significance of high nickel and chromium concentrations in pliocene lignite of the Kosovo Basin, Serbia
Trace element data from 59 Pliocene lignite cores from the lignite field in the Kosovo Basin, southern Serbia, show localized enrichment of Ni and Cr (33-304 ppm and 8-176 ppm, respectively, whole-coal basis). Concentrations of both elements decrease from the western and southern boundaries of the lignite field. Low-temperature ash and polished coal pellets of selected bench and whole-coal samples
Authors
L. Ruppert, R. Finkelman, E. Boti, M. Milosavljevic, S. Tewalt, N. Simon, F. Dulong
Allogenic and autogenic controls on sedimentation in the central Sumatra basin as an analogue for Pennsylvanian coal-bearing strata in the Appalachian basin
Recent sedimentation patterns in the central Sumatra basin, Republic of Indonesia, may help to explain the cyclic stratigraphy of the Pennsylvanian System of the eastern United States. Modern influx of fluvial siliciclastic sediment to the epeiric seas of the Sunda shelf, including the Strait of Malacca, appears to be highly restricted by rain forest cover within the ever-wet climate belt of equat
Authors
C. Blaine Cecil, Frank T. Dulong, James C. Cobb
Superparamagnetic Fe3O4 particles formed by oxidation of pyrite heated in an anoxic atmosphere
As a follow-up to previous gas analysis experiments in which pyrite was heated to 681 K in an anoxic (oxygen starved) atmosphere, the first oxidation product, FeSO4, was studied as a bulk material. No decomposition of FeSO4 to Fe3O4 was observed in the temperature range studied. The lack of decomposition of bulk FeSO4 to Fe3O4 suggests that FeS2 oxidizes directly to Fe3O4, or that FeSO4, FeS2 and
Authors
A. N. Thorpe, F. E. Senftle, R. Talley, S. Hetherington, F. Dulong
The 57Fe Mössbauer parameters of pyrite and marcasite with different provenances
Eighteen pyrite and twelve marcasite samples which have different provenances have been investigated to determine the systematics of the influence of mineralogical and geological factors on the 57Fe Mössbauer spectra at 298 K. The following results have been obtained: there is no ambiguity in distinguishing single phase pyrite from single phase marcasite by means of 57Fe Mössbauer spectroscopy at
Authors
B.J. Evans, R. G. Johnson, F. E. Senftle, C. B. Cecil, F. Dulong