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Condensation Experiments of Mg-Silicate Minerals

Published online by Cambridge University Press:  12 April 2016

A. Tsuchiyama
A. Tsuchiyama*
Affiliation:
Institute of Earth and Planetary Sciences College of General Education Osaka UniversityToyonaka 560Japan

Abstract

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Condensation experiments were performed in the simple but most fundamental system Mg-Si-O-H with forsterite vaporization source. At temperatures above about 1000°C, euhedral crystals of forsterite (Mg2SiO4) of a few μm were formed. These crystals are similar to olivines in Allende matrix. At temperatures below about 1000°C, whiskers of forsterite and enstatite (MgSiO3) were formed by vapor-liquid-solid growth mechanism. These whiskers are different from enstatite whiskers in interplanetary dust, which were probably formed at small super coolings.

Type
Interplanetary Dust: Physical and Chemical Analysis
Information
International Astronomical Union Colloquium , Volume 126: Origin and Evolution of Interplanetary Dust , 1991 , pp. 83 - 86
Copyright
Copyright © Kluwer 1991

References

Blander, M. and Katz, J. L. (1967) ’Condensation of primordial dust’ Geochim. Cosmochim. Acta 31, 1025–1034.Google Scholar
Bradley, J. P., Brownlee, D. E. and Veblen, D.R. (1983) ’Pyroxene whiskers and platelets in interplanetary dust: evidence of vapor phase growth’, Nature 301, 473–477.CrossRefGoogle Scholar
Green, H. W., Radcliffe, S. V. and Heuer, A. H. (1971) ’Allende meteorites: A high voltage electron petrographic study’ Nature 172, 936–939.Google Scholar
Koike, C. and Tsuchiyama, A. (1991) ’The infrared spectra of synthesized amorphous silicates of olivine and pyroxene’, this volume.Google Scholar
Nagahara, H., Kushiro, I., Mysen, B. O. and Mori, H. (1988) ’Experimental vaporization and condensation of olivine solid solution’, Nature, 331, 516–518.CrossRefGoogle Scholar
Nuth, J. A. and Donn, B. (1982) ’Experimental studies of the vapor phase nucleation of refractory compounds. I. The condensation of SiO’, Jour. Chem. Phys. 77, 2639–2646.Google Scholar
Tsuchiyama, A. (1989) ’Condensation experiments in the system Mg-Si-0-H’ Lunar Planet. Sci. XX, 1136–1137.Google Scholar
Tsuchiyama, A., Kushiro, I., Mysen, B. O. and Morimoto, N. (1988) ’An electron microscopy of gas condensates in the system Mg-Si-0-H’ Proc. NIPR Sym. Antarct. Meteorites 1, 185–196.Google Scholar
Wagner, R. S. and Ellis, W. C. (1965) ’The vapor-liquid-solid mechanism of crystal growth and its application to silicon’, Trans. Met. Soc. AIME 223, 1053–1064.Google Scholar