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Information Journal Paper

Title

KYANITE IN THERMAL AUREOLES

Pages

  105-128

Abstract

 Different models are discussed to interpret the presence of KYANITE as a stable phase in CONTACT AUREOLEs especially in the andalusite-, sillimanite- bearing aureoles. In such aureoles the polymorphic sequence KYANITE → andalusite → sillimanite can be explained in tenns of an essentially isobaric path during which KYANITE initially crystallises from the breakdown of pyrophyllite or more likely muscovite + chlorite beneath the pressure of the triple point (3-4 kbar 10-14 km depth), followed by andalusite and sillimanite crystallisation. The sequence KYANITE-sillimanite and/or fibrolite can be seen in thennal aureoles subjected to isobaric metamorphism above the triple Al2SiO5 point (5-8 kbar 17-28 km depth). The absence of KYANITE in some thennal aureoles can be explained on the basis of either compositional constraint or overstepping of low- temperature reactions due to high heating rates.

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  • Cite

    APA: Copy

    HOMAM, S.M., ATHERTON, M.P., & BOYLE, A.P.. (2004). KYANITE IN THERMAL AUREOLES. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, 12(1), 105-128. SID. https://sid.ir/paper/3805/en

    Vancouver: Copy

    HOMAM S.M., ATHERTON M.P., BOYLE A.P.. KYANITE IN THERMAL AUREOLES. IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY[Internet]. 2004;12(1):105-128. Available from: https://sid.ir/paper/3805/en

    IEEE: Copy

    S.M. HOMAM, M.P. ATHERTON, and A.P. BOYLE, “KYANITE IN THERMAL AUREOLES,” IRANIAN JOURNAL OF CRYSTALLOGRAPHY AND MINERALOGY, vol. 12, no. 1, pp. 105–128, 2004, [Online]. Available: https://sid.ir/paper/3805/en

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