Hello Bernardo, perhaps this paper...Regards,JLR Hariya, Y., & Kimura, M. (1978). Optical anomaly garnet and its stability field at high pressures and temperatures. 北海道大学理学部紀要= Journal of the Faculty of Science, Hokkaido University. Series 4, Geology and mineralogy, 18(4), 611-624. De : Bernardo Cesare <[log in to unmask]> À : [log in to unmask] Envoyé le : Vendredi 16 décembre 2016 20h33 Objet : [geo-metamorphism] Optically anisotropic garnet Dear all, we have found a highly deformed blueschist showing optically anisotropic garnet, not yet probed but presumably a Fe-Mg(-Mn) solution. A first, quick search for similar occurrences didn't bring results so I'd greatly appreciate your feedback, and to receive references of studies that might help us in the interpretation of this behaviour. Thank you very much in advance! Regards, Bernardo -- ******************************************************************* Bernardo Cesare Dipartimento di Geoscienze, Universita' di Padova Via G. Gradenigo, 6, I-35131 PADOVA ITALY Tel: ++39-049-8279148 Fax: ++39-049-8279134 email: [log in to unmask] Web site: http://147.162.183.153/bernardo/berning.html ACME Group: http://147.162.183.153/ACME MicROCKScopica: http://www.microckscopica.org InsiemePerWamba: http://www.insiemeperwamba.org ******************************************************************* "The only real failure is the failure to try, and the measure of success is how we cope with disappointment, as we always must." From the movie: The Best Exotic Marigold Hotel