Evaluating the metallogeny of Mashhad Paleo-Tethys Granitoids, NE Iran

摘要

The Paleo-Tethys remnants (meta-ophiolite and meta-flysch) were intruded at four different episodes of magmatism (Triassic to Cretaceous time). 1) Dehnow hornblende biotite tonalite-granodiorite, 2) Vakilabad-Kuhsangi biotite granodiorite, 3) Sangbast feldspar monzogranite and 4) Khajehmourad biotite-muscovite leucogranite and pegmatite. They are moderately peraluminous to highly felsic peraluminous S-type granitoid. No Sn-W mineralization detected within the skarn and granitoid rocks. The Sm/Eu was found to be an important tool to discriminate between Sn- mineralized and non-mineralized granite. Gold mineralization is present within a sheared zone.