Harvey E. Belkin
Harvey Belkin is a Research Geologist (Scientist Emeritus) with the USGS Geology, Energy & Minerals (GEM) Science Center in Reston, VA.
Science and Products
Filter Total Items: 75
Health impacts of coal: Should we be concerned?
[No abstract available]
Authors
R. B. Finkelman, H. E. Belkin, J.A. Centeno
Ecology and shell chemistry of Loxoconcha matagordensis
Studies of the seasonal ecology and shell chemistry of the ostracode Loxoconcha matagordensis and related species of Loxoconcha from regions off eastern North America reveal that shell size and trace elemental (Mg/Ca ratio) composition are useful in paleothermometry using fossil populations. Seasonal sampling of populations from Chesapeake Bay, augmented by samples from Florida Bay, indicate that
Authors
T. M. Cronin, T. Kamiya, G. S. Dwyer, H. Belkin, C.D. Vann, S. Schwede, R. Wagner
Geothermometry, geochronology, and mass transfer associated with hydrothermal alteration of a rhyolitic hyaloclastite from Ponza Island, Italy
A rhyolitic hyaloclastite from Ponza Island, Italy, was hydrothermally altered, producing four distinct alteration zones based on X-ray diffraction mineralogy and field textures: (1) nonpervasive argillic zone; (2) propylitic zone; (3) silicic zone; and (4) sericitic zone. The unaltered hyaloclastite is volcanic breccia with clasts of vesiculated obsidian in a matrix of predominantly pumice lapill
Authors
S. P. Altaner, R.F. Ylagan, S.M. Savin, J.L. Aronson, H. E. Belkin, A. Pozzuoli
Tectonic controls on the genesis of ignimbrites from the Campanian Volcanic Zone, southern Italy
The Campanian Plain is an 80 x 30 km region of southern Italy, bordered by the Apennine Chain, that has experienced subsidence during the Quaternary. This region, volcanologically active in the last 600 ka, has been identified as the Campanian Volcanic Zone (CVZ). The products of three periods of trachytic ignimbrite volcanism (289-246 ka, 157 ka and 106 ka) have been identified in the Apennine ar
Authors
G. Rolandi, F. Bellucci, M.T. Heizler, H. E. Belkin, B. de Vivo
Characterization of limestone reacted with acid-mine drainage in a pulsed limestone bed treatment system at the Friendship Hill National Historical Site, Pennsylvania, USA
Armoring of limestone is a common cause of failure in limestone-based acid-mine drainage (AMD) treatment systems. Limestone is the least expensive material available for acid neutralization, but is not typically recommended for highly acidic, Fe-rich waters due to armoring with Fe(III) oxyhydroxide coatings. A new AMD treatment technology that uses CO2 in a pulsed limestone bed reactor minimizes a
Authors
Jane M. Hammarstrom, Philip Sibrell, Harvey E. Belkin
Compositional variation in minerals of the chevkinite group
The composition of chevkinite and perrierite, the most common members of the chevkinite group, is closely expressed by the formula A4BC2D2Si4O22, where A = (La,Ce,Ca,Sr,Th), B = Fe2+, C = (Fe2+,Fe3+,Ti,Al,Zr,Nb) and D = Ti. The A site is dominated by a strong negative correlation between (Ca+Sr) and the REE. Chondrite-normalized REE patterns are very variable, e.g. in LREE/HREE and Eu/Eu*. The C s
Authors
R. Macdonald, H. E. Belkin
Health impacts of coal and coal use: Possible solutions
Coal will be a dominant energy source in both developed and developing countries for at least the first half of the 21st century. Environmental problems associated with coal, before mining, during mining, in storage, during combustion, and postcombustion waste products are well known and are being addressed by ongoing research. The connection between potential environmental problems with human hea
Authors
R. B. Finkelman, W. Orem, V. Castranova, C. A. Tatu, H. E. Belkin, B. Zheng, H.E. Lerch, S.V. Maharaj, A. L. Bates
Isotope geochemistry and fluid inclusion study of skarns from Vesuvius
We present new mineral chemistry, fluid inclusion, stable carbon and oxygen, as well as Pb, Sr, and Nd isotope data of Ca-Mg-silicate-rich ejecta (skarns) and associated cognate and xenolithic nodules from the Mt. Somma-Vesuvius volcanic complex, Italy. The typically zoned skarn ejecta consist mainly of diopsidic and hedenbergitic, sometimes "fassaitic" clinopyroxene, Mg-rich and Ti-poor phlogopit
Authors
H.A. Gilg, A. Lima, R. Somma, H. E. Belkin, B. de Vivo, R. A. Ayuso
Geological and geochemical characteristics of high arsenic coals from endemic arsenosis areas in southwestern Guizhou Province, China
Southwest Guizhou Province is one of the most important areas of disseminated, sediment-hosted-type Au deposits in China and is an important area of coal production. The chemistry of most of the coals in SW Guizhou is similar to those in other parts of China. Their As content is near the Chinese coal average, but some local, small coal mines contain high As coals. The highest As content is up to 3
Authors
Z. Ding, B. Zheng, J. Long, H. E. Belkin, R. B. Finkelman, C. Chen, D. Zhou, Y. Zhou
New constraints on the pyroclastic eruptive history of the Campanian volcanic Plain (Italy)
The ∼ 150 km3 (DRE) trachytic Campanian Ignimbrite, which is situated north-west of Naples, Italy, is one of the largest eruptions in the Mediterranean region in the last 200 ky. Despite centuries of investigation, the age and eruptive history of the Campanian Ignimbrite is still debated, as is the chronology of other significant volcanic events of the Campanian Plain within the last 200–300 ky. N
Authors
B. de Vivo, G. Rolandi, P. B. Gans, A. Calvert, W. A. Bohrson, F. J. Spera, H. E. Belkin
Preliminary study on the mode of occurrence of arsenic in high arsenic coals from southwest Guizhou Province
Coal samples from high arsenic coal areas have been analyzed by electron microprobe analyzer (EMPA), scanning electron microscopy with an energy dispersive X-ray analyzer (SEM-EDX), X-ray diffraction analysis (XRD), low temperature ashing (LTA), transmission electron microscopy (TEM), X-ray absorption fine structure (XAFS), instrument neutron activation analysis (INAA) and wet chemical analysis. A
Authors
Z. Ding, B. Zheng, Jiahua Zhang, H. E. Belkin, R. B. Finkelman, F. Zhao, D. Zhou, Y. Zhou, C. Chen
Health impacts of domestic coal use in China
Domestic coal combustion has had profound adverse effects on the health of millions of people worldwide. In China alone several hundred million people commonly burn raw coal in unvented stoves that permeate their homes with high levels of toxic metals and organic compounds. At least 3,000 people in Guizhou Province in southwest China are suffering from severe arsenic poisoning. The primary source
Authors
R. B. Finkelman, H. E. Belkin, B. Zheng
Science and Products
Filter Total Items: 75
Health impacts of coal: Should we be concerned?
[No abstract available]
Authors
R. B. Finkelman, H. E. Belkin, J.A. Centeno
Ecology and shell chemistry of Loxoconcha matagordensis
Studies of the seasonal ecology and shell chemistry of the ostracode Loxoconcha matagordensis and related species of Loxoconcha from regions off eastern North America reveal that shell size and trace elemental (Mg/Ca ratio) composition are useful in paleothermometry using fossil populations. Seasonal sampling of populations from Chesapeake Bay, augmented by samples from Florida Bay, indicate that
Authors
T. M. Cronin, T. Kamiya, G. S. Dwyer, H. Belkin, C.D. Vann, S. Schwede, R. Wagner
Geothermometry, geochronology, and mass transfer associated with hydrothermal alteration of a rhyolitic hyaloclastite from Ponza Island, Italy
A rhyolitic hyaloclastite from Ponza Island, Italy, was hydrothermally altered, producing four distinct alteration zones based on X-ray diffraction mineralogy and field textures: (1) nonpervasive argillic zone; (2) propylitic zone; (3) silicic zone; and (4) sericitic zone. The unaltered hyaloclastite is volcanic breccia with clasts of vesiculated obsidian in a matrix of predominantly pumice lapill
Authors
S. P. Altaner, R.F. Ylagan, S.M. Savin, J.L. Aronson, H. E. Belkin, A. Pozzuoli
Tectonic controls on the genesis of ignimbrites from the Campanian Volcanic Zone, southern Italy
The Campanian Plain is an 80 x 30 km region of southern Italy, bordered by the Apennine Chain, that has experienced subsidence during the Quaternary. This region, volcanologically active in the last 600 ka, has been identified as the Campanian Volcanic Zone (CVZ). The products of three periods of trachytic ignimbrite volcanism (289-246 ka, 157 ka and 106 ka) have been identified in the Apennine ar
Authors
G. Rolandi, F. Bellucci, M.T. Heizler, H. E. Belkin, B. de Vivo
Characterization of limestone reacted with acid-mine drainage in a pulsed limestone bed treatment system at the Friendship Hill National Historical Site, Pennsylvania, USA
Armoring of limestone is a common cause of failure in limestone-based acid-mine drainage (AMD) treatment systems. Limestone is the least expensive material available for acid neutralization, but is not typically recommended for highly acidic, Fe-rich waters due to armoring with Fe(III) oxyhydroxide coatings. A new AMD treatment technology that uses CO2 in a pulsed limestone bed reactor minimizes a
Authors
Jane M. Hammarstrom, Philip Sibrell, Harvey E. Belkin
Compositional variation in minerals of the chevkinite group
The composition of chevkinite and perrierite, the most common members of the chevkinite group, is closely expressed by the formula A4BC2D2Si4O22, where A = (La,Ce,Ca,Sr,Th), B = Fe2+, C = (Fe2+,Fe3+,Ti,Al,Zr,Nb) and D = Ti. The A site is dominated by a strong negative correlation between (Ca+Sr) and the REE. Chondrite-normalized REE patterns are very variable, e.g. in LREE/HREE and Eu/Eu*. The C s
Authors
R. Macdonald, H. E. Belkin
Health impacts of coal and coal use: Possible solutions
Coal will be a dominant energy source in both developed and developing countries for at least the first half of the 21st century. Environmental problems associated with coal, before mining, during mining, in storage, during combustion, and postcombustion waste products are well known and are being addressed by ongoing research. The connection between potential environmental problems with human hea
Authors
R. B. Finkelman, W. Orem, V. Castranova, C. A. Tatu, H. E. Belkin, B. Zheng, H.E. Lerch, S.V. Maharaj, A. L. Bates
Isotope geochemistry and fluid inclusion study of skarns from Vesuvius
We present new mineral chemistry, fluid inclusion, stable carbon and oxygen, as well as Pb, Sr, and Nd isotope data of Ca-Mg-silicate-rich ejecta (skarns) and associated cognate and xenolithic nodules from the Mt. Somma-Vesuvius volcanic complex, Italy. The typically zoned skarn ejecta consist mainly of diopsidic and hedenbergitic, sometimes "fassaitic" clinopyroxene, Mg-rich and Ti-poor phlogopit
Authors
H.A. Gilg, A. Lima, R. Somma, H. E. Belkin, B. de Vivo, R. A. Ayuso
Geological and geochemical characteristics of high arsenic coals from endemic arsenosis areas in southwestern Guizhou Province, China
Southwest Guizhou Province is one of the most important areas of disseminated, sediment-hosted-type Au deposits in China and is an important area of coal production. The chemistry of most of the coals in SW Guizhou is similar to those in other parts of China. Their As content is near the Chinese coal average, but some local, small coal mines contain high As coals. The highest As content is up to 3
Authors
Z. Ding, B. Zheng, J. Long, H. E. Belkin, R. B. Finkelman, C. Chen, D. Zhou, Y. Zhou
New constraints on the pyroclastic eruptive history of the Campanian volcanic Plain (Italy)
The ∼ 150 km3 (DRE) trachytic Campanian Ignimbrite, which is situated north-west of Naples, Italy, is one of the largest eruptions in the Mediterranean region in the last 200 ky. Despite centuries of investigation, the age and eruptive history of the Campanian Ignimbrite is still debated, as is the chronology of other significant volcanic events of the Campanian Plain within the last 200–300 ky. N
Authors
B. de Vivo, G. Rolandi, P. B. Gans, A. Calvert, W. A. Bohrson, F. J. Spera, H. E. Belkin
Preliminary study on the mode of occurrence of arsenic in high arsenic coals from southwest Guizhou Province
Coal samples from high arsenic coal areas have been analyzed by electron microprobe analyzer (EMPA), scanning electron microscopy with an energy dispersive X-ray analyzer (SEM-EDX), X-ray diffraction analysis (XRD), low temperature ashing (LTA), transmission electron microscopy (TEM), X-ray absorption fine structure (XAFS), instrument neutron activation analysis (INAA) and wet chemical analysis. A
Authors
Z. Ding, B. Zheng, Jiahua Zhang, H. E. Belkin, R. B. Finkelman, F. Zhao, D. Zhou, Y. Zhou, C. Chen
Health impacts of domestic coal use in China
Domestic coal combustion has had profound adverse effects on the health of millions of people worldwide. In China alone several hundred million people commonly burn raw coal in unvented stoves that permeate their homes with high levels of toxic metals and organic compounds. At least 3,000 people in Guizhou Province in southwest China are suffering from severe arsenic poisoning. The primary source
Authors
R. B. Finkelman, H. E. Belkin, B. Zheng