minerals Article Metamorphic and Metasomatic Kyanite-Bearing Mineral Assemblages of Thassos Island (Rhodope, Greece) Alexandre Tarantola 1,* , Panagiotis Voudouris 2 , Aurélien Eglinger 1, Christophe Scheffer 1,3, Kimberly Trebus 1, Marie Bitte 1, Benjamin Rondeau 4 , Constantinos Mavrogonatos 2 , Ian Graham 5, Marius Etienne 1 and Chantal Peiffert 1 1 GeoRessources, Faculté des Sciences et Technologies, Université de Lorraine, CNRS, F-54506 Vandœuvre-lès-Nancy, France;
[email protected] (A.E.); christophe.scheff
[email protected] (C.S.);
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[email protected] (C.P.) 2 Department of Geology & Geoenvironment, National and Kapodistrian University of Athens, 15784 Athens, Greece;
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[email protected] (C.M.) 3 Département de Géologie et de Génie Géologique, Université Laval, Québec, QC G1V 0A6, Canada 4 Laboratoire de Planétologie et Géodynamique, Université de Nantes, CNRS UMR 6112, 44322 Nantes, France;
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[email protected]; Tel.: +33-3-72-74-55-67 Received: 27 February 2019; Accepted: 23 April 2019; Published: 25 April 2019 Abstract: The Trikorfo area (Thassos Island, Rhodope massif, Northern Greece) represents a unique mineralogical locality with Mn-rich minerals including kyanite, andalusite, garnet and epidote. Their vivid colors and large crystal size make them good indicators of gem-quality materials, although crystals found up to now are too fractured to be considered as marketable gems.