"Muskovit-Quarzit" pebble, musovite-quartzite strongly foliated, isoclinally folded.
Petrography: white to grey-brown banded, fine-grained, strongly foliated and folded matrix of quartz +/- muscovite.
Age: pre-alpidic and or alpidic quartzite, overprinted by Alpidic low-grade metamorphism.
Origin: Silvretta, Ötztal or penninic Engadin ...
© Günter Grundmann, Detmold.