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Browsing ELibrary by Title
Now showing items 8790-8809 of 21638
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(2000)Partition coefficients (D) for Nb and Ta between rutile and haplogranite melts in the K2O-Al2O3-SiO2 system have been measured as functions of the K2O/Al2O3 ratio, the concentrations of Nb2O5 and Ta2O5, the temperature, ...
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(1988)There have been no experimental or theoretical determinations of the partition coefficients of Sn(II) and SN(IV) in magma systems. In the present article these are estimated by analyzing the partition coefficients of ...
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(1995)The partitioning of Si, Mg, and Ca in major concentrations, and Al, Ti, Sc and Sm in minor concentrations among MgSiO3 perovskite, CaSiO3 perovskite, superphase B -Mg10Si3O14[OH,F]4, and melt containing H2O and fluorine, ...
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(1995)Partition coefficients between a synthetic andesite melt and 1.5 and 3.0 molal (m) NaCl-H2O fluids have been measured at 1.5-2.0 GPa and 1250°C. Use of the double-capsule method allowed collection of silicate glass and of ...
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(1997)The knowledge of rare-earth element (REE) and high field-strength element (HFSE) partitioning between minerals such as amphibole, pyroxenes or garnet and tonalitic liquids is essential to understand where and how tonalitic ...
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(2000)Experimental studies of the element distribution between carbonatite melts and hydrous fluids are hampered by the fact that neither the fluid nor the melt can be isochemically quenched in conventional high-pressure vessels. ...
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(1997)This study investigates the effects of variations in the fugacities of oxygen and sulfur on the partitioning of first series transition metals (V, Cr, Mn, Fe, Co, Ni, and Cu) and W among coexisting sulfide melt, silicate ...
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(1997)Magnesium-normalised nickel, cobalt and manganese partition coefficients (Kd-Ni, Kd-Co, and Kd-Mn) between silicate perovskite and periclase have been measured experimentally in multi-anvil press and diamond-anvil cell ...
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(1996)Partitioning of Ni, Cu, and Pt-group elements (Ir, Rh, Pt, Pd) between monosulfide solid solution (Mss) and sulfide liquid has been investigated in the Fe-Ni-Cu-S system at 1000 and 1100oC and one atmosphere pressure. The ...
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(1996)New measurements on partitioning of platinum-group elements (PGE) Os, Ir, Ru, Pt, Pd, and Au between (Fe,Ni)-sulfide liquid and basaltic melt using low pressure, sealed silica glass tube, and controlled atmosphere methods ...
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(1995)The partitioning of rare earth elements (REEs) in calcite overgrowths precipitated from sea-water solutions under steady-state conditions was investigated experimentally using a constant addition technique. The composition ...
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(2000)Minerals with CaSiO3 composition were found as inclusions in diamonds, and are considered to be originally of perovskite structure. To constrain their genesis and consequently the extent of circulation of mantle material, ...
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PARTITIONING OF RARE EARTH ELEMENTS BETWEEN PHOSPHATE-RICH CARBONATITE MELTS AND MANTLE PERIDOTITES (1993)Near solidus equilibria in the system mantle peridotite-carbonate-phosphate doped with Ce and Yb have been studied at 20 kbar and 950C. Carbonatitic melts in this system may be quenched into homogeneous glasses. Such melts ...
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(1990)Studies of the behavior of the rare-earth elements (REE) in high-pressure metamorphism have established that the partitioning of REE between the pyroxenes and garnets in the eclogites of metamorphic rock complexes differs ...
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(2004)A series of high temperature experiments was undertaken to study partitioning of several highly siderophile elements (HSE; Ru, Rh, Pd, Re, Os, Ir, Pt and Au) between Cr-rich spinel, olivine, pyroxene and silicate melt. ...
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(2001)The partitioning of some moderately siderophile elements and Si between solid metal and liquid metal-sulfide in the Fe-S system at 1000 to 1400°C and low pressure has been investigated at minor abundances using EPMA, and ...
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(2003)Trace-element partition coefficients between plagioclase and coexisting glass/matrix have been determined for twenty-nine rhyodacite-rhyolite samples from nine volcanic centers. Strontium par-tition coefficients form two ...
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(2001)There is a paucity of experimental data on calcite precipitation from waters at low ionic strength and low ratios of Mg/Ca and Sr/Ca, using controlled and constant precipitation rates. Such data are particularly needed for ...
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(1999)The partitioning of highly siderophile elements (HSEs: Re, Os, Ir, Pt, Pd, and Au) between solid metal and liquid metal sulfide in the Fe-Ni-S system at 1000 to 1200°C and low pressure has been investigated at abundances ...
Now showing items 8790-8809 of 21638