Results 151 to 160 of about 15,904 (206)

Analytical protocol for measuring micro-molar quantities of sulfur volatile species in experimental high pressure and temperature fluids. [PDF]

Commun Chem
Secchiari A, Toffolo L, Recchia S, Tumiati S.   +3 more
europepmc   +1 more source

Simulation of CO₂ Chemisorption Characteristics in Coal and Power Plant Flue Gas. [PDF]

ACS Omega
Wang X, Kong X, Liu Y, Shi Y, Mao J.
europepmc   +1 more source

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Oxygen fugacity controls in the Earth's upper mantle

Nature, 1990
DESPITE significant progress in recent years1–3, there is still considerable debate surrounding the oxygen fugacity (fo2) of the Earth's upper mantle and the chemical reactions that buffer it. Electrochemical measurements1,3 give heterogeneous oxidation states, with one group near the fayalite–magnetite–quartz (FMQ), and the other near the iron-wustite
C. Ballhaus, R. F. Berry, D. H. Green
openaire   +3 more sources

OXYGEN FUGACITY ACROSS TECTONIC SETTINGS

Goldschmidt2022 abstracts, 2020
Experiment and observation have established the centrality of oxygen fugacity ( f O 2 ) to determining the course of igneous differentiation, and so the development and application of oxybarometers have proliferated for more than half a century. The compositions of mineral, melt, and vapor phases determine the f O 2 that rocks record, and the activity ...
Elizabeth Cottrell, Suzanne Birner, Maryjo Brounce, Fred Davis, Laura Waters, Katherine Kelley   +5 more
openaire   +2 more sources

Equilibrium Oxygen Fugacity in Titanium Ferrites

Zeitschrift für anorganische und allgemeine Chemie, 1986
AbstractThe subsolidus equilibrium oxygen fugacities for the boundaries of the Fe3O4Fe2TiO4 stability field above 1000°C have been calculated from available data. A Frenkel point defect equilibrium model is described, which uniquely determines the single phase intrinsic oxygen fugacity, as a function of temperature, Ti content, and metal‐oxygen ...
J. M. Honig, R. Aragón
openaire   +2 more sources

Earth’s past and present mantle oxygen fugacity

Nature Reviews Earth & Environment
Elizabeth Cottrell, Dante Canil, Charles Langmuir, Katy A. Evans, Fabrice Gaillard   +4 more
openaire   +3 more sources

Plate subduction, oxygen fugacity, and mineralization

Journal of Oceanology and Limnology, 2019
Plate subduction is the largest natural factory that processes elements, which controls recycling and mineralization of a variety of elements. There are three major ore deposit belts in the world: the circum-Pacific, the central Asian, and the Tethys belts. All the three belts are closely associated with plate subductions, the mechanism remains obscure.
He Liu, Renqiang Liao, Lipeng Zhang, Congying Li, Weidong Sun   +4 more
openaire   +1 more source

Oxygen Fugacities Directly Measured in Magmatic Gases

Science, 1966
An electrochemical device was used to measure the fugacity of oxygen ( f O 2 ) in holes drilled through the crust of Makaopuhi lava lake, Kilauea Volcano, Hawaii. Results obtained within 6 months of the lake formation show that log f
M, Sato, T L, Wright
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Equilibrium oxygen fugacity in zinc-titanium ferrites of ideal oxygen stoichiometry

Materials Research Bulletin, 1988
Abstract A thermodynamic analysis is provided to specify the oxygen equilibrium pressures in the system Znx Tiy Fe3−x−yO4 for the special case of the ideal oxygen stoichiometry O ( Zn + Ti + Fe ) ,  4 3 . The principal features of the results are briefly discussed.
P. Wang, J.M. Honig
openaire   +1 more source