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Trace element partitioning between clinopyroxene, magnetite, ilmenite and ferrobasaltic to dacitic magmas: an experimental study on the role of oxygen fugacity and melt composition
Ilmenite-, magnetite- and clinopyroxene−melt trace element partition coefficients were investigated experimentally as a function of oxygen fugacity...
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Carbonate record of temporal change in oxygen fugacity and gaseous species in asteroid Ryugu
The Hayabusa2 spacecraft explored asteroid Ryugu and brought its surface materials to Earth. Ryugu samples resemble Ivuna-type (CI) chondrites—the...
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Sensibility of Tourmaline Chemistry to Granitic Magma Composition and Oxygen Fugacity
Extensive granitic magmatism is a dominant feature of the Central Iberian Zone (CIZ) of the Variscan Orogen. For the most part, these are S-type...
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Estimation of Chlorine Fugacity in Low-Н2О Fluid of the C–O–(H)–NaCl System in the Cumulus of Ultramafic–Mafic Intrusions
AbstractAt high PT parameters of cumulates of ultramafic–mafic intrusions and low oxygen fugacity (below QFM buffer), Pt in the form of a carbonyl...
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Trace element partitioning in basaltic systems as a function of oxygen fugacity
Along with temperature, pressure and melt chemistry, magmatic oxygen fugacity ( f O 2 ) has an important influence on liquid and solid differentiation...
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Sub-arc mantle fugacity shifted by sediment recycling across the Great Oxidation Event
The chemical exchange between the atmosphere, crust and mantle depends on sediment recycling via subduction. However, it remains unclear how...
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Greenalite-Chamosite composition, geothermometry and oxygen fugacity variations in pisolitic ironstone and carbonates of the Chilpi Group: implication on Paleoproterozoic seawater chemistry
Iron-rich rocks of Orosirian Period in the Chilpi Group on the northern margin of the Bastar Craton, Central India, contain an association of...
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Variation of oxygen fugacity during magmatic evolution: in-situ geochemistry of mafic dikes from Jiaodong, southeastern North China Craton
Mafic lava is generally used to study the oxygen fugacity of lithospheric mantle. However, some studies confirmed that the high oxygen fugacity of...
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The Effect of CO2 Reduction in Low-Water Melts at Low Hydrogen Fugacity: Experiment at 500 MPa and Thermodynamic Model
Formation of graphite was observed in experiments on synthesis of dry carbon-bearing albite glasses in platinum capsules in an Internally Heated...
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Influence of hydrogen fugacity on thermal transformation of sedimentary organic matter: Implications for hydrocarbon generation in the ultra-depth
Hydrocarbon generation from sedimentary organic matter (SOM) with an original net C oxidation state (OS, −1–−2) is a disproportionation reaction...
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Melting of carbonate-bearing peridotite as a function of oxygen fugacity: implications for mantle melting beneath mid-ocean ridges
The depth of melting beneath mid-ocean ridges (MORs) controls the melt composition as well as its rheology. Since mantle melting below MORs is the...
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Experimental quantification of vanadium partitioning between eclogitic minerals (garnet, clinopyroxene, rutile) and silicate melt as a function of temperature and oxygen fugacity
Vanadium is a multivalent element that may speciate as V 2+ ; V 3+ ; V 4+ and V 5+ in silicate and oxide phases. The relative abundance of V in planetary...
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New temperature and oxygen fugacity data of Martian nakhlite from Northwest Africa (NWA) 5790 and implications for shallow sulphur degassing
Newly analysed titanomagnetite–ilmenite (Tim–Ilm) intergrowths from Martian nakhlite meteorite Northwest Africa (NWA) 5790 yielded crystallisation...
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Redox State of Tektites from Different Scattering Fields: Evidence from the Data of Electrochemical Study of Intrinsic Oxygen Fugacity
AbstractThe results of study of the intrinsic oxygen fugacity (fO 2 ) of various types of tektites from the European and Australasian scattering...
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Iron and Oxygen
In the systems heretofore discussed, we have dealt mainly with the six components SiO2, Al2O3, MgO, CaO, Na2O, and K2O, which may be found the...
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Fe2+–Mg partitioning between olivine and liquid at low oxygen fugacity: an experimental and thermodynamic framework
A set of 1-atm gas-mixing experiments ( n = 31) was run using Re wire loops at low-oxygen fugacity (ƒO 2 , within one half-log unit of the Fe–FeO...
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Tracking the oxygen fugacity of enclave-forming granitic melts through plagioclase trace element signatures
Magma mixing and contamination are among the dominant processes in the building of the isotopic diversity of granite rocks. Felsic microgranular...
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In situ XANES study of the influence of varying temperature and oxygen fugacity on iron oxidation state and coordination in a phonolitic melt
Iron oxidation state and environment in magmas affect their phase diagram and their properties, including viscosity and density, which determine...
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The Redox State of Chromium Ores of the Polar Urals
AbstractThe redox state of chromium ores of the main industrially significant types, developed in ultramafic rocks of the Rai-Iz–Voykar complex of...
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The Composition of a Silicate Melt of Fluorite-Containing Ongonites at 700–800°C, 100 MPa, and Different Oxygen Fugacities
AbstractExperiments on the melting of samples of fluorite-containing ongonites from the Ary-Bulak massif at 700–800°C at a pressure of 100 MPa and...
