Frank T. Dulong (Former Employee)
Science and Products
Filter Total Items: 47
Allogenic and autogenic controls on sedimentation in the central Sumatra basin as an analogue for Pennsylvanian coal-bearing strata in the Appalachian basin 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...
Authors
C. Blaine Cecil, Frank T. Dulong, James C. Cobb
Effects of detrital influx in the Pennsylvanian Upper Freeport peat swamp Effects of detrital influx in the Pennsylvanian Upper Freeport peat swamp
Quartz cathodoluminescence properties and mineralogy of three sets of samples and vegetal and/ or miospore data from two sets of samples from the Upper Freeport coal bed, west-central Pennsylvania, show that detrital influence from a penecontemporaneous channel is limited to an area less than three km from the channel. The sets of samples examined include localities of the coal bed where...
Authors
L.F. Ruppert, R.W. Stanton, C.Blaine Cecil, C.F. Eble, F.T. Dulong
Palynological assessment of organic tissues and metallic minerals in the Jerritt Canyon gold deposit, Nevada (U.S.A.) Palynological assessment of organic tissues and metallic minerals in the Jerritt Canyon gold deposit, Nevada (U.S.A.)
Organic tissues and metallic minerals were studied in acid residues and thin section of the Jerritt Canyon (Bell Mine) gold deposit. The purpose was to compare gold-bearing and gold-free rocks, characterize their differences, and assess a possible relationship between the invisible gold and the organic tissues in these early Paleozoic, carbonaceous limestones, dolomites, and claystones...
Authors
E. I. Robbins, J. P. D’Agostino, J.L. Haas, R.R. Larson, F.T. Dulong
Combustion and leaching behavior of elements in the argonne premium coal samples Combustion and leaching behavior of elements in the argonne premium coal samples
Eight Argonne Premium Coal samples and two other coal samples were used to observe the effects of combustion and leaching on 30 elements. The results were used to infer the modes of occurrence of these elements. Instrumental neutron activation analysis indicates that the effects of combustion and leaching on many elements varied markedly among the samples. As much as 90% of the selenium...
Authors
R. B. Finkelman, C.A. Palmer, M.R. Krasnow, P. J. Aruscavage, G.A. Sellers, F.T. Dulong
Superparamagnetic Fe3O4 particles formed by oxidation of pyrite heated in an anoxic atmosphere 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...
Authors
A. N. Thorpe, F. E. Senftle, R. Talley, S. Hetherington, F. Dulong
The laser microprobe mass analyser for determining partitioning of minor and trace elements among intimately associated macerals: An example from the Swallow Wood coal bed, Yorkshire, UK The laser microprobe mass analyser for determining partitioning of minor and trace elements among intimately associated macerals: An example from the Swallow Wood coal bed, Yorkshire, UK
A study of the elemental composition of intimately associated coal macerals in the English Swallow Wood coal bed was conducted using a laser microprobe mass analyser, and indicated a similar trace and minor elemental chemistry in the vitrinite and cutinite and a different elemental signature in the fusinite. Three to six sites were analysed within each maceral during the study by laser...
Authors
P.C. Lyons, J.J. Morelli, D.M. Hercules, D. Lineman, C. L. Thompson-Rizer, F.T. Dulong
Chemistry and origin of minor and trace elements in vitrinite concentrates from a rank series from the eastern United States, England, and Australia Chemistry and origin of minor and trace elements in vitrinite concentrates from a rank series from the eastern United States, England, and Australia
A rank series consisting of twelve vitrinite concentrates and companion whole-coal samples from mined coal beds in the eastern United States, England, and Australia were analyzed for C, H, N, O, ash, and 47 trace and minor elements by standard elemental, instrumental neutron activation analysis (INAA), and direct-current-arc spectrographic (DCAS) techniques. The reflectance of vitrinite...
Authors
P.C. Lyons, C.A. Palmer, N. H. Bostick, J.D. Fletcher, F.T. Dulong, F. W. Brown, Z. A. Brown, M.R. Krasnow, L.A. Romankiw
Marine origin of pyritic sulfur in the Lower Bakerstown coal bed, Castleman coal field, Maryland (U.S.A.) Marine origin of pyritic sulfur in the Lower Bakerstown coal bed, Castleman coal field, Maryland (U.S.A.)
The amount, kind, distribution, and genesis of pyrite in the Lower Bakerstown coal bed in a 150 × 15 m area of the Bettinger mine, Castleman coal field, Maryland, were studied by various analytical techniques. The mined coal, which had a nonmarine roof rock, contained 1.4–2.8 wt.% total sulfur, generally much lower than the high-sulfur coal (> 3.0 wt.% total S) to the north, which is...
Authors
P.C. Lyons, J. F. Whelan, F.T. Dulong
Development and evaluation of deterministic models for predicting the weight of fouling deposits from coal combustion Development and evaluation of deterministic models for predicting the weight of fouling deposits from coal combustion
No abstract available.
Authors
Robert B. Finkelman, F.T. Dulong
Oxidation of pyrite in an anoxic atmosphere Oxidation of pyrite in an anoxic atmosphere
Pyrite (FeS2) inclusions in coal, when heated in an oxygen deficient atmosphere (approximately 1% oxygen), become coated with magnetic Fe3O4 due to oxidation. Most of the FeS2 can thus be removed from the coal by magnetic separation to reduce the sulphur concentration. The oxidation products have been studied in greater detail by measuring the SO2 and O2 in the effluent gas during the...
Authors
A. N. Thorpe, F. E. Senftle, Corrine Alexander, F.T. Dulong, R.B. LaCount, S. Friedman
PROTON MICROPROBE ANALYSIS OF TRACE-ELEMENT VARIATIONS IN VITRINITES IN THE SAME AND DIFFERENT COAL BEDS. PROTON MICROPROBE ANALYSIS OF TRACE-ELEMENT VARIATIONS IN VITRINITES IN THE SAME AND DIFFERENT COAL BEDS.
The PIXE (proton-induced X-ray emission) microprobe can be used for nondestructive, in-situ analyses of areas as small as those analyzed by the electron microprobe, and has a sensitivity of detection as much as two orders of magnitude better than the electron microprobe. Preliminary studies demonstrated that PIXE provides a capability for quantitative determination of elemental...
Authors
J.A. Minkin, E. C. T. Chao, Herma Blank, F.T. Dulong
Geologic processes affecting the quality of the Upper Freeport coal bed, west-central Pennsylvania Geologic processes affecting the quality of the Upper Freeport coal bed, west-central Pennsylvania
No abstract available.
Authors
R.W. Stanton, C. B. Cecil, B.S. Pierce, L.F. Ruppert, F.T. Dulong
Science and Products
Filter Total Items: 47
Allogenic and autogenic controls on sedimentation in the central Sumatra basin as an analogue for Pennsylvanian coal-bearing strata in the Appalachian basin 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...
Authors
C. Blaine Cecil, Frank T. Dulong, James C. Cobb
Effects of detrital influx in the Pennsylvanian Upper Freeport peat swamp Effects of detrital influx in the Pennsylvanian Upper Freeport peat swamp
Quartz cathodoluminescence properties and mineralogy of three sets of samples and vegetal and/ or miospore data from two sets of samples from the Upper Freeport coal bed, west-central Pennsylvania, show that detrital influence from a penecontemporaneous channel is limited to an area less than three km from the channel. The sets of samples examined include localities of the coal bed where...
Authors
L.F. Ruppert, R.W. Stanton, C.Blaine Cecil, C.F. Eble, F.T. Dulong
Palynological assessment of organic tissues and metallic minerals in the Jerritt Canyon gold deposit, Nevada (U.S.A.) Palynological assessment of organic tissues and metallic minerals in the Jerritt Canyon gold deposit, Nevada (U.S.A.)
Organic tissues and metallic minerals were studied in acid residues and thin section of the Jerritt Canyon (Bell Mine) gold deposit. The purpose was to compare gold-bearing and gold-free rocks, characterize their differences, and assess a possible relationship between the invisible gold and the organic tissues in these early Paleozoic, carbonaceous limestones, dolomites, and claystones...
Authors
E. I. Robbins, J. P. D’Agostino, J.L. Haas, R.R. Larson, F.T. Dulong
Combustion and leaching behavior of elements in the argonne premium coal samples Combustion and leaching behavior of elements in the argonne premium coal samples
Eight Argonne Premium Coal samples and two other coal samples were used to observe the effects of combustion and leaching on 30 elements. The results were used to infer the modes of occurrence of these elements. Instrumental neutron activation analysis indicates that the effects of combustion and leaching on many elements varied markedly among the samples. As much as 90% of the selenium...
Authors
R. B. Finkelman, C.A. Palmer, M.R. Krasnow, P. J. Aruscavage, G.A. Sellers, F.T. Dulong
Superparamagnetic Fe3O4 particles formed by oxidation of pyrite heated in an anoxic atmosphere 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...
Authors
A. N. Thorpe, F. E. Senftle, R. Talley, S. Hetherington, F. Dulong
The laser microprobe mass analyser for determining partitioning of minor and trace elements among intimately associated macerals: An example from the Swallow Wood coal bed, Yorkshire, UK The laser microprobe mass analyser for determining partitioning of minor and trace elements among intimately associated macerals: An example from the Swallow Wood coal bed, Yorkshire, UK
A study of the elemental composition of intimately associated coal macerals in the English Swallow Wood coal bed was conducted using a laser microprobe mass analyser, and indicated a similar trace and minor elemental chemistry in the vitrinite and cutinite and a different elemental signature in the fusinite. Three to six sites were analysed within each maceral during the study by laser...
Authors
P.C. Lyons, J.J. Morelli, D.M. Hercules, D. Lineman, C. L. Thompson-Rizer, F.T. Dulong
Chemistry and origin of minor and trace elements in vitrinite concentrates from a rank series from the eastern United States, England, and Australia Chemistry and origin of minor and trace elements in vitrinite concentrates from a rank series from the eastern United States, England, and Australia
A rank series consisting of twelve vitrinite concentrates and companion whole-coal samples from mined coal beds in the eastern United States, England, and Australia were analyzed for C, H, N, O, ash, and 47 trace and minor elements by standard elemental, instrumental neutron activation analysis (INAA), and direct-current-arc spectrographic (DCAS) techniques. The reflectance of vitrinite...
Authors
P.C. Lyons, C.A. Palmer, N. H. Bostick, J.D. Fletcher, F.T. Dulong, F. W. Brown, Z. A. Brown, M.R. Krasnow, L.A. Romankiw
Marine origin of pyritic sulfur in the Lower Bakerstown coal bed, Castleman coal field, Maryland (U.S.A.) Marine origin of pyritic sulfur in the Lower Bakerstown coal bed, Castleman coal field, Maryland (U.S.A.)
The amount, kind, distribution, and genesis of pyrite in the Lower Bakerstown coal bed in a 150 × 15 m area of the Bettinger mine, Castleman coal field, Maryland, were studied by various analytical techniques. The mined coal, which had a nonmarine roof rock, contained 1.4–2.8 wt.% total sulfur, generally much lower than the high-sulfur coal (> 3.0 wt.% total S) to the north, which is...
Authors
P.C. Lyons, J. F. Whelan, F.T. Dulong
Development and evaluation of deterministic models for predicting the weight of fouling deposits from coal combustion Development and evaluation of deterministic models for predicting the weight of fouling deposits from coal combustion
No abstract available.
Authors
Robert B. Finkelman, F.T. Dulong
Oxidation of pyrite in an anoxic atmosphere Oxidation of pyrite in an anoxic atmosphere
Pyrite (FeS2) inclusions in coal, when heated in an oxygen deficient atmosphere (approximately 1% oxygen), become coated with magnetic Fe3O4 due to oxidation. Most of the FeS2 can thus be removed from the coal by magnetic separation to reduce the sulphur concentration. The oxidation products have been studied in greater detail by measuring the SO2 and O2 in the effluent gas during the...
Authors
A. N. Thorpe, F. E. Senftle, Corrine Alexander, F.T. Dulong, R.B. LaCount, S. Friedman
PROTON MICROPROBE ANALYSIS OF TRACE-ELEMENT VARIATIONS IN VITRINITES IN THE SAME AND DIFFERENT COAL BEDS. PROTON MICROPROBE ANALYSIS OF TRACE-ELEMENT VARIATIONS IN VITRINITES IN THE SAME AND DIFFERENT COAL BEDS.
The PIXE (proton-induced X-ray emission) microprobe can be used for nondestructive, in-situ analyses of areas as small as those analyzed by the electron microprobe, and has a sensitivity of detection as much as two orders of magnitude better than the electron microprobe. Preliminary studies demonstrated that PIXE provides a capability for quantitative determination of elemental...
Authors
J.A. Minkin, E. C. T. Chao, Herma Blank, F.T. Dulong
Geologic processes affecting the quality of the Upper Freeport coal bed, west-central Pennsylvania Geologic processes affecting the quality of the Upper Freeport coal bed, west-central Pennsylvania
No abstract available.
Authors
R.W. Stanton, C. B. Cecil, B.S. Pierce, L.F. Ruppert, F.T. Dulong