Výsledky vyhledávání - "F. W. Dickson"

Seawater-basalt interaction at 200°C and 500 bars: Implications for origin of sea-floor heavy-metal deposits and regulation of seawater chemistry

Autor: James L. Bischoff, F. W. Dickson

Publikováno v: Earth and Planetary Science Letters. 25:385-397

Seawater reacted with basalt at 200°C and 500 bars for 4752 hours changed chemically from an original slightly basic Na-Mg-SO4-Cl solution to slightly acid dominantly Na-Ca-Cl solution. Mg and SO4 decreased to near the limit of detection, and SiO2 r

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::204785ab6f37ef1845bc786aedb009c7
https://doi.org/10.1016/0012-821x(75)90257-5

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Geology and stable isotope studies of the Carlin gold deposit, Nevada

Autor: A. S. Radtke, F. W. Dickson, R. O. Rye

Publikováno v: Economic Geology. 75:641-672

The Carlin gold deposit, largest of the epithermal disseminated replacement-type gold deposits discovered to date in the United States, formed as a result of hydrothermal processes associated with a shallow-seated late Tertiary igneous event. The ore

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a42e5c19c600c70365b37d6ea7944de4
https://doi.org/10.2113/gsecongeo.75.5.641

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Experimental determination of the rate and equilibrium fractionation factors of sulfur isotope exchange between sulfate and sulfide in slightly acid solutions at 300°C and 1000 bars

Autor: Hitoshi Sakai, F. W. Dickson

Publikováno v: Earth and Planetary Science Letters. 39:151-161

A sulfur isotope fractionation of 20.0 ± 0.2‰ was measured between aqueous sulfide and sulfate at 300°C and 1000 bars using gold-cell hydrothermal solution equipment. The value is 2‰ smaller than previously published values. Rates of exchange w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e8dbd7a6e84da9aebae288d7737f0b71
https://doi.org/10.1016/0012-821x(78)90151-6

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Solid solutions of antimony, arsenic, and gold in stibnite (Sb 2 S 3 ), orpiment (As 2 S 3 ), and realgar (As 2 S 2 )

Autor: Arthur S. Radtke, Chris Heropoulos, F. W. Dickson, B. G. Weissberg

Publikováno v: Economic Geology. 70:591-594

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d64c39b1844ca25a5c4dce517e4fc04e
https://doi.org/10.2113/gsecongeo.70.3.591

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Use of hydrothermal solution equipment to determine the solubility of anhydrite in water from 100 degrees C to 275 degrees C and from 1 bar to 1000 bars pressure

Autor: George Tunell, F. W. Dickson, Charles W. Blount

Publikováno v: American Journal of Science. 261:61-78

Specially designed "hydrothermal solution" equipment was used to determine the solubility of anhydrite H 2 O from 100 degrees C. to 275 degrees C. and from 1 bar to 1000 bars. The solubility of anhydrite decreases with increasing temperature and incr

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::813afe79d69bf4d2565a742a04e8bcac
https://doi.org/10.2475/ajs.261.1.61

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Solubility of orpiment (As2S3) in Na2S-H2O at 50–200°C and 100–1500 bars, with geological applications

Autor: B.G Weissberg, George Tunell, F. W. Dickson

Publikováno v: Geochimica et Cosmochimica Acta. 30:815-827

The solubility of orpiment in Na2S-H2O solutions was measured under conditions ranging from 0·55 to 3·43 wt.% Na2S, temperatures from 25 to 200°C, and pressures from 100 to 1500 bars. Orpiment is highly soluble in Na2S solutions; mole ratios of di

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e20c771f1f1f6afd6ca31d5ae9feb301
https://doi.org/10.1016/0016-7037(66)90134-7

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The solubility of anhydrite (CaSO4) in NaCl-H2O from 100 to 450°C and 1 to 1000 bars

Autor: F. W. Dickson, C.W. Blounot

Publikováno v: Geochimica et Cosmochimica Acta. 33:227-245

The solubility of anhydrite was determined at temperatures ranging from 100 to 450°C, pressures from 1 to 1000 bars, and in solutions ranging in NaCl concentration from dilute to 6 moles NaCl per kg of H 2 O. Inreased pressure causes the solubility

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8648fbdaaa07334700d07338feaea720
https://doi.org/10.1016/0016-7037(69)90140-9

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Equilibria of red HgS (cinnabar) and black HgS (metacinnabar) and their saturated solutions in the systems HgS-Na (sub 2 ) S-H 2 O and HgS-Na 2 S-Na 2 O-H 2 O from 25 degrees C at 1 atmosphere pressure

Autor: F. W. Dickson, George Tunell

Publikováno v: American Journal of Science. 256:654-679

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::09fc8c6a19f33ffcec84acdc04f719d1
https://doi.org/10.2475/ajs.256.9.654

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A method for the determination of equilibrium sulfur pressures of metal sulfide reactions

Autor: F. W. Dickson, G. C. Kennedy, L. D. Shields

Publikováno v: Economic Geology. 57:1021-1030

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::bad4405c17986e4e19636a545177f01b
https://doi.org/10.2113/gsecongeo.57.7.1021

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Systems S-Na 2 O-H 2 O and S-H 2 O--Application to the mode of origin of natural alkaline polysulfide and thiosulfate solutions

Autor: R. H. Arntson, F. W. Dickson, George Tunell

Publikováno v: American Journal of Science. 258:574-582

S reacts with aqueous NaOH to form sodium sulfide and sodium thiosulfate; in the presence of excess S the polysulfide complex ion S x = forms, where "x" is approximately 5. The saturation concentrations of S in aqueous NaOH solutions allowed to react

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::e3518eaddaab04df31507d32f24bab79
https://doi.org/10.2475/ajs.258.8.574

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