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Browsing ELibrary by Title
Now showing items 4086-4105 of 21253
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(2002)The solubility of the albite-paragonite-quartz mineral assemblage was measured as a function of NaCl and fluorine concentration at 400°C, 500 bars and at 450°C, 500 and 1000 bars. Decreasing Al concentrations with increasing ...
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(2002)Solubility of boehmite (from 90 to 300 °C) and gibbsite (at 44.5 °C) was measured as a function of NaF concentration in alkaline NH4OH-NH4Cl-(NaCl) solutions at saturated vapor pressure. The marked increase of boehmite and ...
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(1989)The equilibrium of amphibole (Am) and garnet (Gr) was one of the first geothermometers to be used in petrological investigations. Its theory was developed already in 1967, but since then it has undergone no appreciable ...
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(1995)Steady-state dissolution rates of anorthite (An96) were measured as a function of aqueous Si, Al, and Ca concentration at temperatures from 45 to 95°C and over the pH range 2.4 to 3.2 using a Ti mixed-flow reactor. All ...
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(1997)We have conducted Ar sorption experiments on two varietis of natural quartz minerals (Q112, Q113) and a synthetic one (QHE37). Runs were performed in an internally heated pressure vessel at 1300°C and pressures of up to ...
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(2002)The stoichiometry and stability of arsenic gaseous complexes were determined in the system As-H2O ± NaCl ± HCl ± H2S at temperatures up to 500°C and pressures up to 600 bar, from both measurements of As(III) and As(V) ...
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(1995)A comprehensive experimental study, utilizing an autoclave hydrothermal apparatus with a 10B isotopic tracer, has been conducted to monitor the geochemical behavior of sediment B during early subduction zone processes. The ...
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(2004)Dissolution and precipitation rates of brucite (Mg(OH)2) were measured at 25°C in a mixed-flow reactor as a function of pH (2.5 to 12), ionic strength (10-4 to 3 M), saturation index (-12 < log Ω < 0.4) and aqueous magnesium ...
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(2004)We have experimentally studied the process of bubble coalescence in rhyolite and phonolite melts of natural composition. The experiments involved decompression of water-saturated melts equilibrated at pressures and ...
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(1996)An experimental investigation of metal-organic co-adsorption was conducted using cadmium and citrate in the presence of corundum. The experiments were performed in the pH range 3.0 to 10.0 in a 0.01 M NaCl matrix with ...
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(2000)Solid solutions of the barite-celestite series were synthesized under hydrothermal conditions. Lattice parameters were determined for the synthesized samples. Relationships between the composition and lattice parameters ...
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(2000)The high-temperature (T = 1623 K) transformations of olivine single crystals in contact with graphite powder have been studied on time scales of hours to days by scanning electron microscopy, transmission electron microscopy, ...
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(1989)The content of the jadeite end member (Jd) in clinopyroxene (Cpx) in equilibrium with plagioclase (P1) and quartz (Qz) is defined by a reaction given in the paper, and is an efficient indicator of pressure for metamorphic ...
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EXPERIMENTAL STUDY OF CLINOPYROXENITE PARTIAL MELTING AND THE ORIGIN OF ULTRA-CALCIC MELT INCLUSIONS (2001)Ultra-calcic melt inclusions (UCMI: CaO>13.5 wt% and/or CaO/Al2O3>0.9) are magnesian and near-primary liquids trapped in volcanic phenocrysts from mid-ocean ridges, arcs, back-arcs, and ocean islands. UCMI can be subdivided ...
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(1987)As proved earlier, an aqueous fluid in equilibrium with mantle minerals at pressures above 10 kb has a relatively high alkalinity. The stability of hydrosulfide complexes of chalcophile elements in such a solution at ...
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(1998)The solubility of Cu phases was measured in vapor-saturated aqueous HCl/NaCl solutions at temperatures ranging from 40 to 300°C, total chloride concentration from 0.01 to 1 m, and pH from 0 to 3.5. For temperatures up to ...
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(1998)Diamond crystallization in carbonate-carbon systems was studied on a "split sphere" device BARS at P = 7 GPa and T = 1700-1750°C (experiment time 18.5 h). It has been established that the heterogeneous nucleation of diamond ...
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(2003)The genesis of diamonds from metamorphic complexes (Kokchetav in Kazakhstan and Dabie Shan in China) has been experimentally modeled. For the first time, diamonds were synthesized at pressures of 5.5-7.5 GPa in the molten ...
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(1997)New values of the dissociation constants of HCl° referring to low density supercritical solutions and near-critical temperatures of water (350-500°C and 500-2500 bars) have been obtained based on comparison of AgCl(s) ...
Now showing items 4086-4105 of 21253