Relations between Au / Sn-W mineralizations and late hercynian granite: Preliminary results from the Schistose Domain of Galicia-Trás-os-Montes Zone, Spain

Eric Gloaguen (1) , Alain Chauvet (1) , Yannick Branquet (1) , O. Gerbeaud (2) , Claire Ramboz (1) , Vincent Bouchot (3) , Catherine Lerouge (3) , Patrick Monié (4) , M. Cathelineau (5) , M.C. Boiron (5) , C. Marignac (6) , N. Pourraz (5) , S. Fourcade (7) , G. Ruffet (7) , M. Iglesias Ponce de Léon (7)

1 ISTO - Institut des Sciences de la Terre d'Orléans
2 LDL - Laboratoire Dynamique de la Lithosphère
3 BRGM - Bureau de Recherches Géologiques et Minières (BRGM)
4 Department of Earth and Planetary Sciences [Kobe]
5 G2R - Géologie et gestion des ressources minérales et énergétiques
6 CRPG - Centre de Recherches Pétrographiques et Géochimiques
7 GR - Géosciences Rennes

Au and W-Sn mineralization of the Schistose Domain of Galicia-Trás-os-Montes are spatially related to late hercynian granites. The Bruès (Au) and the Mina Soriana W-(Sn) deposits are studied. Both show some similarities and are assumed to form in the same tectonic and metamorphic context, on top of the granites. The role of the granite as a source for mineralizing fluids and rheological control for vein emplacement is re-adressed and discussed.

Keywords: Au; W-Sn deposits; mesothermal mineralization; late hercynian granites; hydrothermalism; Galicia; Spain

Domains: Mineralogy

Eric Gloaguen, Alain Chauvet, Yannick Branquet, O. Gerbeaud, Claire Ramboz, et al.. Relations between Au / Sn-W mineralizations and late hercynian granite: Preliminary results from the Schistose Domain of Galicia-Trás-os-Montes Zone, Spain. Mineral Exploration and Sustainable Development, 2003, 1, pp.271-274. ⟨hal-00107922⟩