Solubility of corundum in aqueous KOH solutions at 700 °C and 1 GPa
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منابع مشابه
The solubility of corundum in H2O at high pressure and temperature and its implications for Al mobility in the deep crust and upper mantle
The solubility of corundum in H2O was measured at 700–1100 °C and 0.5–2.0 GPa using a piston–cylinder apparatus and weight-loss methods. At 700 °C, 0.5 GPa, Al concentration is 0.41±0.15 millimolal (1σ analytical error). Corundum solubility increases strongly with pressure (P) and temperature (T), reaching 2.57±0.15 millimolal at 700 °C, 2.0 GPa, and 27.3± 1.5 millimolal at 1100 °C, 2.0 GPa. Th...
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The solubility of the assemblage corundum + kyanite in H2O was determined at 700 C and 10 kbar, using a piston-cylinder apparatus and rapid-quench/fluid-extraction techniques. Weighted mean concentrations of total Al and Si were 5.80 ± 0.03 mmol kg H2O and 0.308 ± 0.003 mol kg )1 H2O, respectively (1r errors). The Al concentration is nearly five times higher than that of corundum solubility in ...
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The solubility and stability of synthetic grossular were determined at 800 C and 10 kbar in NaCl–H2O solutions over a large range of salinity. The measurements were made by evaluating the weight losses of grossular, corundum, and wollastonite crystals equilibrated with fluid for up to one week in Pt capsules and a piston-cylinder apparatus. Grossular dissolves congruently over the entire salini...
متن کاملParagonite stability at 700 C in the presence of H2O–NaCl fluids: constraints on H2O activity and implications for high pressure metamorphism
We carried out reversed piston-cylinder experiments on the equilibrium paragonite = jadeite + kyanite + H2O at 700 C, 1.5–2.5 GPa, in the presence of H2O-NaCl fluids. Synthetic paragonite and jadeite and natural kyanite were used as starting materials. The experiments were performed on four different nominal starting compositions: X(H2O)=1.0, 0.90, 0.75 and 0.62. Reaction direction and extent w...
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تاریخ انتشار 2009