Výsledky vyhledávání - "Beth Goldoff"

Hydroxyl, Cl, and F partitioning between high-silica rhyolitic melts-apatite-fluid(s) at 50–200 MPa and 700–1000 °C

Autor: Patricia A. Nadeau, Beth Goldoff, Zachary W. Silbert, Ryan N. Flesch, James D. Webster

Publikováno v: American Mineralogist. 102:61-74

Hydrothermal experiments were conducted with fluid- and apatite-saturated, high-silica rhyolitic melts at ca. 700–1000 °C and 50–200 MPa to determine the distribution of H 2 O/OH, Cl, and F between melt, apatite, aqueous vapor, brine, or vapor p

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::0bd8c5733fff732fb1e18bf49a1ce866
https://doi.org/10.2138/am-2017-5746

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Compositions of biotite, amphibole, apatite and silicate melt inclusions from the Tongchang mine, Dexing porphyry deposit, SE China: Implications for the behavior of halogens in mineralized porphyry systems

Autor: Beth Goldoff, Dehui Zhang, Rong-Zhen Zhang, Bo Bao, James D. Webster

Publikováno v: Ore Geology Reviews. 79:443-462

The Dexing deposit, located in the Circum-Pacific ore belt, is the largest porphyry copper deposit in eastern China. It is composed of 3 separate plutons , which host three mines: Tongchang, Fujiawu and Zhushahong mines. The porphyritic granodiorite

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::86b3e03a9de90dcac413e2bd0c40912b
https://doi.org/10.1016/j.oregeorev.2016.05.024

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A glimpse into Augustine Volcano's Pleistocene past: Insight from the petrology of a massive rhyolite deposit

Autor: Beth Goldoff, Charles W. Mandeville, James D. Webster, Patricia A. Nadeau, B. D. Monteleone, Nobumichi Shimizu

Publikováno v: Journal of Volcanology and Geothermal Research. 304:304-323

Activity at Augustine Volcano, Alaska, has been characterized by intermediate composition domes, flows, and tephras during the Holocene. Erosive lahars and pyroclastic flows associated with the 2006 eruption revealed large exposures of voluminous rhy

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9d4c74ec04488c4588d9fb84156bd8e5
https://doi.org/10.1016/j.jvolgeores.2015.07.034

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Partitioning behavior of chlorine and fluorine in felsic melt–fluid(s)–apatite systems at 50MPa and 850–950°C

Autor: James D. Webster, Beth Goldoff, Philip M. Piccoli, Angela L. Doherty

Publikováno v: Chemical Geology. 384:94-111

The partitioning of Cl between apatite, felsic melts, and aqueous fluids (vapor ± brine), and the partitioning of F between apatite and felsic melt were investigated experimentally at 50–58 MPa and 850–950 °C. Chlorine partitioning between apat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5b9279956e5e27ddbe4f6348ef846115
https://doi.org/10.1016/j.chemgeo.2014.06.023

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Cl-RICH FLUORAPATITE, DEVOID OF OH, FROM THE THREE PEAKS AREA, UTAH: THE FIRST REPORTED STRUCTURE OF NATURAL Cl-RICH FLUORAPATITE

Autor: Karina May Heffernan, Hanna Nekvasil, Beth Goldoff, John M. Hughes

Publikováno v: The Canadian Mineralogist. 52:643-652

Apatite is the most abundant phosphate mineral on Earth and forms the foundation of the global phosphorus cycle. Interest in apatite crosses many disciplines, including geology, agriculture, material science, dentistry, and medicine, and the phase is

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::02d3901beab1ace11a9a94955fb1b058
https://doi.org/10.3749/canmin.1400014

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C–O–H–S fluids and granitic magma: how S partitions and modifies CO2 concentrations of fluid-saturated felsic melt at 200 MPa

Autor: James D. Webster, Beth Goldoff, Nobumichi Shimizu

Publikováno v: Contributions to Mineralogy and Petrology. 162:849-865

Hydrothermal volatile-solubility and partitioning experiments were conducted with fluid-saturated haplogranitic melt, H2O, CO2, and S in an internally heated pressure vessel at 900°C and 200 MPa; three additional experiments were conducted with iron

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::6c3fb53aae5ea8f8a0e633c49801acc6
https://doi.org/10.1007/s00410-011-0628-1

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Experimental and modeled chlorine solubilities in aluminosilicate melts at 1 to 7000 bars and 700 to 1250 °C. Applications to magmas of Augustine volcano, Alaska

Autor: Beth Goldoff, Roman E. Botcharnikov, James D. Webster, Francesco Vetere, Angela L. Doherty, Alexander R. McBirney

Hydrothermal experiments were conducted at ca. 1 to 7000 bars and 700 to 1250 °C in 121 rhyolitic to basaltic systems to determine Cl solubility in silicate melts, i.e., the maximum Cl concentration in melts that are saturated in a hydrosaline liqui

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2f776d2c34f77b5477193f4a8b60010d
http://hdl.handle.net/11391/1318304

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Characterization of fluor-chlorapatites by electron probe microanalysis with a focus on time-dependent intensity variation of halogens

Autor: James D. Webster, Beth Goldoff, Daniel E. Harlov

Publikováno v: American Mineralogist

Prior research has shown that fluorine and chlorine X-ray count rates vary with exposure to the electron beam during electron probe microanalysis (EPMA) of apatite. Stormer et al. (1993) and Stormer and Pierson (1993) demonstrate that the EPMA-operat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::6b804366245c1401622d196566f4b3c5
https://gfzpublic.gfz-potsdam.de/pubman/item/item_246275

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