Les veines a andalousite du Pischahorn (Grisons, Suisse)

Translated title of the contribution: Andalusite veins from the Pischahorn, Grisons, Switzerland

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Abstract

New structural and mineralogical data about the quartz-andalusite and/or muscovite, albite veins occurring near the Pischahorn mountain are presented. The veins are closely related to micaschists and staurolite-micaschists within a thick paragneissic sequence belonging to the polymetamorphic basement of the Upper Austroalpine Silvretta nappe. The recognition of the syn- or post-D3 emplacement of the veins and the existence of kyanite relics being replaced by andalusite in one vein leads to a modification of the Late Variscan Pressure-Temperature path followed by the Silvretta nappe basement. -from English summary

Translated title of the contributionAndalusite veins from the Pischahorn, Grisons, Switzerland
Original languageFrench
Pages (from-to)191-202
Number of pages12
JournalSchweizerische Mineralogische und Petrographische Mitteilungen
Volume74
Issue number2
Publication statusPublished - 1 Jan 1994
Externally publishedYes

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