Other
Scientific paper
Sep 1983
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1983gecoa..47.1573b&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 47, Issue 9, pp.1573-1578
Other
4
Scientific paper
Isothermal (670-700°C) solubility of corundum in supercritical water, within the stability range of corundum as a phase of the system Al 2 O 3 -H 2 O, has been determined by the weight loss method. Experiments were performed in the pressure range 2.5 to 6 kbar in cold seal hydrothermal equipment at 670 ± 5° C using gold tubing. The overall uncertainty of the solubility values obtained was 8%. Experiments in the pressure range 10 to 20 kbar were performed in a piston cylinder apparatus at 700°C using sealed gold capsules held by supporting steel containers. The overall uncertainty of the solubility values obtained was estimated to be 10%. All data could be fitted by the linear equation S [ ppm Al 2 O 3 ] = -12.37 + 7.24 · p [ kbar ] with correlation coefficient r = 0.9963. Separate fits of hydrothermal and piston cylinder results yielded a small difference between the two data sets, which is due rather to the experimental uncertainty than to the small temperature difference.
Becker Klaus H.
Cemi Lado
Langer Klaus E. O. E.
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