Harvey E. Belkin (Former Employee)
Science and Products
Filter Total Items: 76
Health impacts of coal and coal use: Possible solutions 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...
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
Compositional variation in minerals of the chevkinite group 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...
Authors
R. Macdonald, H. E. Belkin
Geological and geochemical characteristics of high arsenic coals from endemic arsenosis areas in southwestern Guizhou Province, China 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...
Authors
Z. Ding, B. Zheng, J. Long, H. E. Belkin, R. B. Finkelman, C. Chen, D. Zhou, Y. Zhou
Isotope geochemistry and fluid inclusion study of skarns from Vesuvius 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
Authors
H.A. Gilg, A. Lima, R. Somma, H. E. Belkin, B. de Vivo, R. A. Ayuso
New constraints on the pyroclastic eruptive history of the Campanian volcanic Plain (Italy) 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...
Authors
B. de Vivo, G. Rolandi, P. B. Gans, A. Calvert, W.A. Bohrson, F. J. Spera, H. E. Belkin
Understanding Vesuvius magmatic processes: Evidence from primitive silicate-melt inclusions in medieval scoria clinopyroxenes (Terzigno formation) Understanding Vesuvius magmatic processes: Evidence from primitive silicate-melt inclusions in medieval scoria clinopyroxenes (Terzigno formation)
Microthermometric investigations of silicate-melt inclusions and electron microprobe analyses were conducted on experimentally homogenized silicate-melt inclusions and on the host clinopyroxenes from 4 scoria samples of different layers from the Mt. Somma-Vesuvius medieval eruption (Formazione di Terzigno, 893 A.D.). The temperature of homogenization, considered the minimum trapping...
Authors
A. Lima, H. E. Belkin, K. Torok
Science and Products
Filter Total Items: 76
Health impacts of coal and coal use: Possible solutions 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...
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
Compositional variation in minerals of the chevkinite group 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...
Authors
R. Macdonald, H. E. Belkin
Geological and geochemical characteristics of high arsenic coals from endemic arsenosis areas in southwestern Guizhou Province, China 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...
Authors
Z. Ding, B. Zheng, J. Long, H. E. Belkin, R. B. Finkelman, C. Chen, D. Zhou, Y. Zhou
Isotope geochemistry and fluid inclusion study of skarns from Vesuvius 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
Authors
H.A. Gilg, A. Lima, R. Somma, H. E. Belkin, B. de Vivo, R. A. Ayuso
New constraints on the pyroclastic eruptive history of the Campanian volcanic Plain (Italy) 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...
Authors
B. de Vivo, G. Rolandi, P. B. Gans, A. Calvert, W.A. Bohrson, F. J. Spera, H. E. Belkin
Understanding Vesuvius magmatic processes: Evidence from primitive silicate-melt inclusions in medieval scoria clinopyroxenes (Terzigno formation) Understanding Vesuvius magmatic processes: Evidence from primitive silicate-melt inclusions in medieval scoria clinopyroxenes (Terzigno formation)
Microthermometric investigations of silicate-melt inclusions and electron microprobe analyses were conducted on experimentally homogenized silicate-melt inclusions and on the host clinopyroxenes from 4 scoria samples of different layers from the Mt. Somma-Vesuvius medieval eruption (Formazione di Terzigno, 893 A.D.). The temperature of homogenization, considered the minimum trapping...
Authors
A. Lima, H. E. Belkin, K. Torok