Diffusion controlled double corona reaction rim around kyanite in retrograded eclogite from the Swiss Central Alps

M. Tóth Tivadar: Diffusion controlled double corona reaction rim around kyanite in retrograded eclogite from the Swiss Central Alps. In: Acta mineralogica-petrographica, (38). pp. 135-144. (1997)

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Abstract

Retrograded eclogite samples at the village Gorduno in the Swiss Central Alps contain relics of ellipsoidal shape with double corona rim. The internal core consists of radial intergrowth of spinel and at places corundum. The fine-grained core is rimmed by plagioclase of composition A1195 which is followed by an outer plagioclase rim. This second plagioclase is of AIUJ-SO. This mineralogy has formed due to a series of reactions between kyanite and other high pressure phases; pyroxene, garnet, zoisite. All these reactions separated the A1-, and Si-rich phases from each other. Because of the restricted mobility of A1 the newly formed minerals created the double corona structure around kyanite.

Item Type: Article
Journal or Publication Title: Acta mineralogica-petrographica
Date: 1997
Volume: 38
ISSN: 0365-8066
Page Range: pp. 135-144
Language: English
Publisher: University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Place of Publication: Szeged
Related URLs: http://acta.bibl.u-szeged.hu/39417/
Uncontrolled Keywords: Kőzettan, Ásványtan, Földtan
Additional Information: Bibliogr.: 144. p. ; ill. ; összefoglalás angol nyelven
Subjects: 01. Natural sciences
01. Natural sciences > 01.05. Earth and related environmental sciences
Date Deposited: 2016. Oct. 17. 09:25
Last Modified: 2022. Jul. 27. 15:26
URI: http://acta.bibl.u-szeged.hu/id/eprint/24864

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