The Stream Sediments and Heavy Minerals for Au-Cu Geochemical Exploration in Nahavand’s Firozan

Subject Areas :

Vahid Rajati ¹ , Mohammad Yazdi ² , Mehrdad Behzadi ³ , Mehrdad Movahedi ⁴

1 - دانش آموخته دانشگاه علوم زمین دانشگاه شهید بهشتی
2 - دانشیار دانشکده علوم زمین دانشگاه شهید بهشتی
3 - استادیار دانشکده علوم زمین دانشگاه شهید بهشتی
4 - سازمان زمین شناسی و اکتشافات معدنی کشور

Received: 2016-09-07 Accepted : 2016-09-07 Published : 2011-03-21

Keywords: Geochemical exploration, Stream sediments, heavy minerals, Firozan, Sananadaj-Sirjan,

Abstract :

The studied area is located in the north of Nahavand’s Firozan, Sanandaj-Sirjan geological zone. The Cretaceousdacite, andesite, quartz-andesite and tuff are dominated rocks in the area.Granite and granodiorite intrusive rockshave been intruded to this complex. The geochemical analysis shows anomalies of Au, Ag, As, Sb, Fe, Pb andZn. The heavy minerals are magnetite, hematite, limonite, martite, oligist, pyrite, oxidized pyrite, galena,sphalerite, native copper, azurite, barite, pyrolusite, ilmenite, rutile, anataz and leucoxene that they areprincipally affiliated with anomalous zones. Also, 18 sample from mineralized zone show that noticeablegeochemical anomaly for Au, Ag, Cu, Pb, Zn and Fe. Finally, field study, mineralography, stream sediments andheavy minerals analysis show that anomalous zone in western part of the area.