Skip to main content Accessibility help
×
Home

Forsterite dissolution in superheated basaltic, andesitic and rhyolitic melts

  • C. H. Donaldson (a1)

Abstract

Dissolution rates of small forsterite spheres in superheated melts of basalt, andesite and rhyolite composition have been measured at 1300°C, atmospheric pressure. The rate is constant (83 µm hr−1) in the basalt, regardless of run duration. In the andesite the initial dissolution rate is 200µm hr−1, followed by a decrease to a constant value of 16µmhr−1 in 2–3 hours. Dissolution rate in the rhyolite decreases from an initial value of 1.7 to <0.1 µmhr−1 over 280 hours and never reaches a constant rate. Once the rate of dissolution has become constant, the film of contaminated melt that forms in melt about a crystal does not thicken with time, indicating attainment of a steady-state condition. Steady state is attributed to natural convection arising from the difference in density between the film of contaminated melt surrounding a crystal and that beyond. The density difference is approximately 2% of the density of the rock melt.

Copyright

References

Hide All
Bowen, N. L. (1913) Amer. J. Sci. 35, 577-99.
Brearley, M. and Scarfe, C. M. (1986) J. Petrol. 27, 1157-82.
Christian, J. W. (1965) The Theory of Transformations in Metals and Alloys. 973 pp. Pergamon, New York.
Corrigan, G. and Gibb, F. G. F. (1979) Mineral. Mag. 43, 121-6.
Donaldson, C. H. (1979) Ibid. 43, 115-19.
Donaldson, C. H. (1985) Ibid. 49, 683-93.
Donaldson, C. H. (1986) In Kinetics and Mass Transport in Silicate and Oxide Systems (Freer, R. and Dennis, P. F., eds.) Trans Tech Publications, 267-74.
Donaldson, C. H. and Hamilton, D. L. (1987) Nature, 327, 413-15.
Donaldson, C. H. and Henderson, C. M. B. (1988) Mineral. Mag. 52, 27-34.
Hebditch, D. J, and Hunt, J. D. (1973) Metall. Trans. 45, 2008-10.
Kuo, L.-C. and Kirkpatrick, R. J. (1985) Amer. J. Sci. 285, 51-90.
McBirney, A. R., Baker, B. H. and Nilson, R. H. (1985) J. Volc. Geoth. Res. 24, 1-24.
Mo, X., Carrnichael, I. S. E., Rivers, M. and Stebbins, J. (1982) Mineral. Mag. 45, 237-45.
Morse, S. A. (1986) J. Petrol, 27, 1183-214.
Oishi, Y., Cooper, A. R. and Kingery, W, D. (1965) J. Amer. Ceram. Soc. 48, 88-94.
Roeder, P. L. and Emslie, R. F. (1970) Contrib. Mineral. Petrol. 29, 275-89.
Sack, R. O., Carmichael, I. S. E., Rivers, M. and Ghiorso, M. S. (1980) Ibid. 75, 369-76.
Shaw, H. R. (1972) Amer. J. Sci. 272, 870-93.
Thornber, C. R. and Huebner, J. S. (1985) Amer. Mineral. 70, 934-45.
Turner, J. S. and Campbell, I. H. (1986) Earth Sci. Revs. 23, 255-352.
Wilcox, W. R. (1983) J, Crystal Growth, 65, 133-42.
Zhang, Y., Walker, D. and Lesher, C. E. (1987) EOS, Trans. Amer. Geophys. Union, 68, 429.

Keywords

Forsterite dissolution in superheated basaltic, andesitic and rhyolitic melts

  • C. H. Donaldson (a1)

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed