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The triple point andalusite — Sillimanite — Kyanite

An experimental and petrologic study

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Abstract

The triple point in the Al2SiO5 polymorphic system has been determined experimentally; it lies at 6.5±0.5 kb and 595±10° C. This result differs strongly from the data of other experimental investigations on this system; the reasons for this are discussed. The new data given here for the phase boundaries kyanite/sillimanite and andalusite/sillimanite as well as the resulting position of the triple point agree with petrologic considerations based upon both experimental work in related systems and petrographic observations.

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Authors and Affiliations

  1. Mineralogisch-Petrologisches Institut der Universität Göttingen, Germany

    Egon Althaus

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  1. Egon Althaus
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Herrn Professor Dr. H. G. F. Winkler danke ich für die wohlwollende Förderung dieser Untersuchung, für wertvolle Diskussionen und Ratschläge sowie für die Erlaubnis, die mit Hilfe der Deutschen Forschungsgemeinschaft aufgebauten Apparaturen zu benutzen. Herr Dr. N. D. Chatterjee korrigierte das Englisch des Manuskripts; hierfür sei ihm herzlich gedankt.

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Althaus, E. The triple point andalusite — Sillimanite — Kyanite. Contr. Mineral. and Petrol. 16, 29–44 (1967). https://doi.org/10.1007/BF00371606

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  • DOI: https://doi.org/10.1007/BF00371606

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