Polymetal and Au skarn deposit determining of Oshvand index Nahavand

Subject Areas :

S.T GHafari-Hashemi ¹ , Mohammad Yazdi ² , Mohammad Fodazi ³ , امین Taghilo ⁴ , مهرداد Movahedi ⁵

1 - دانشجوی کارشناسی ارشد، دانشگاه آزاد اسلامی، واحد علوم و تحقیقات تهران
2 - دانشیار گروه زمین شناسی، دانشکده علوم زمین، دانشگاه شهید بهشتی تهران
3 - استادیار دانشگاه آزاد اسلامی، واحد اسلامشهر
4 - کارشناس ارشد زمین شناسی اقتصادی دانشگاه آزاد اسلامی، علوم و تحقیقات تهران
5 - کارشناس ارشد زمین شناسی اقتصادی دانشگاه شهید بهشتی تهران

Received: 2016-09-07 Accepted : 2016-09-07 Published : 2011-12-22

Keywords: Mineralization, gold, Polymetal skarn, Oshvand, Nahavand,

Abstract :

Oshvand Poly Metal Skarn is located 15 km East Nahavand. The index is the first metal index sheet 1:100,000Nahavand which is unique according to the dimensions, carat, and typical of skarn type. Of Geology, Oshvandarea is part of Sanandaj – Sirjan zone; Oshvand Skarn is composed of penetrating a granite mass of upperCretaceous age into Paleozoic limestone. Mineral is exposed in two sections, Exo-skarn and Endo-skarnapproximately 300 meters long and 65-91 meters wide and 40 meters height.Store is composed more in the eastof skarn,, copper and iron carat was significant in all samples of skarn, and their Average carat is seriate3439ppm and 105273ppm, So for determine the deposit was used Blocking technique because obtained nearestactual tonnage. After estimating storage can expect potential more than 119 kilograms of gold, 1,717.5 tons zinc9,574 tonnes of copper and 296,355 tons of iron.