LAUSR

The study area is part of the Urumieh–Dokhtar volcanic arc that a large part of its surface is covered by extrusive Igneous rocks (tuff, intermediate lavas and ignimbrites sheets), plutonic igneous (diorite and granodiorite) and semi-deep stones (dyke and sill). Studied samples are situated in calc-alkaline domain of magmatic series diagrams. Harker diagrams show the fractional crystallization of Clinopyroxene, amphibole, plagioclase, alkali feldspars and opaque minerals (ilmenite Titano-magnetite, ilmenite and rutile). In spider diagrams, light rare earth elements (LREE) are enriched compared to heavy rare earth elements (HREE), and HFS elements (Ti, Nb) show negative anomaly and LFS elements (Cs, K, Pb) show positive anomaly, showing that it is a distinct characteristic of subduction zones. Skarns of the area mainly are of exoskarns and are rich in plagioclase, microcline, amphibole, biotite and epidote. Skarn is enriched of iron, copper, molybdenum, vanadium, lead, zinc and silver. Deposits of barite in the area show characteristics of volcanic-sedimentary barites and are associated to ore-bearing hydrothermal solutions. Using satellite images and processing information, four areas with high mineral potential are identified in the area.摘要本文的研究区是乌鲁米耶–杜克塔尔火山弧的一部分, 其表面大部分为挤压型火成岩 (凝灰岩、 中间熔岩和闪长岩片)、 斜长火成岩 (闪长岩和花岗闪长岩) 和半深岩 (闪长岩和底岩), 研究样品属于岩浆系列的钙碱性岩系。 Harker 图显示了斜辉石、 斜长岩、 斜长石、 碱性长石和不透明矿物 (钛铁矿、 斜长石和不透明矿物) 的分馏结晶。 在蛛网图中, 轻稀土元素比重稀土元素富集, HFS 元素 (Ti, Nb) 呈现负异常, LFS 元素 (Cs, K, Pb) 呈现正异常, 为俯冲带的一个明显特征。 该地区的硅卡岩主要为外生岩溶, 富含斜长石、 微克隆、 角闪石、 黑云母和绿帘石。 硅卡岩富含铁、 铜、 钼、 钒、 铅、 锌和银。 该地区的重晶石矿床具有火山沉积重晶石的特征, 与含矿热液有关。 利用卫星图像和处理信息, 确定了该区 4 个矿产潜力大的地区。