#thinsectionthursday I have a feeling this rock reached the garnet-staurolite zone 😍 Paragneiss from NE Sardinia (Posada valley). FOV 4.5 mm https://t.co/Gtrqyl2pA6
— Samuele Papeschi (@CalamitaMan) Dec 30, 2021
via Twitter https://twitter.com/CalamitaMan
December 30, 2021 at 09:21PM
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