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Layer-silicates in the contact zone between granite and serpentinite, jordanów, lower Silesia, Poland

Published online by Cambridge University Press:  09 July 2018

E. Dubińska  and
A. Wiewióra
E. Dubińska
Affiliation:
Institute of Geochemistry, Mineralogy and Petrography, Warsaw University, al. Żwirki i Wigury 93, 02-089 Warsaw Institute of Geological Sciences, Polish Academy of Sciences, al. Żwirki i Wigury 93, 02-089 Warsaw, Poland
A. Wiewióra
Affiliation:
Institute of Geochemistry, Mineralogy and Petrography, Warsaw University, al. Żwirki i Wigury 93, 02-089 Warsaw Institute of Geological Sciences, Polish Academy of Sciences, al. Żwirki i Wigury 93, 02-089 Warsaw, Poland
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Abstract

Chlorite belonging to subfamily C, vermiculite 2MB-VII-meso, talc and a monoclinic amphibole were identified in rocks from a contact zone between highly tectonized granite and serpentinite at Jordanów, Lower Silesia, Poland. K-saturated vermiculite readily produced a phlogopite-like structure 1M-I (3TA-IV) indicating trioctahedral mica to be its precursor. Spatial relations of the mineral assemblages were compared with published experimental data and used to produce a tentative model of the geological evolution of the rocks and minerals, which include four episodes of mineral development separated by three tectonic events.

Type
Research Article
Information
Clay Minerals , Volume 23 , Issue 4 , December 1988 , pp. 459 - 470
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1988

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