Integration of geological and geophysical studies in order to mineral exploration at the Zaveh mineralization area, Khorasan Razavi Province, Iran

IF 1 Q4 GEOSCIENCES, MULTIDISCIPLINARY
A. M. Shafaroudi, Bahareh Boroziniat, Mohammad Reza Hidarian Shahri
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引用次数: 0

Abstract

The copper deposit of Zaveh lies in the SE of the city of Torbat-e-Heydarieh and in middle of the Khaf-Kashmar-Bardaskan Magmatic Belt (KKBMB) in the Khorasan-e-Razavi Province. The lithology of the area consist of Jurassic and Cretaceous sedimentary rocks and Eocene volcanic units. Ore-formation is controlled by fault activity, representing vein-veinlet style E-W trending, formed within a conglomerate rich in quartz. Primary minerals are chalcopyrite, pyrite and arsenopyrite and secondary minerals contain malachite, azurite chalcocite, bornite, covellite, Cu sulphates, wad (Mn hydroxide), haematite, goethite, jarosite, limonite and (to a lesser extent) chrysocolla. The predominant alteration is silification which is associated with vein ore-formation. The volcanic units host propylitic, sericite, carbonate and silicification alterations. The ore-formation itself represents anomalies of Cu (2.1 % max), As (>1%), Sb (~105 gr/T), Pb (4371 gr/T) and Zn (1.1% max). Induced polarization and electrical resistivity (IP/RS) surveys unveil that the most chargeability anomaly corresponds to center of ore-forming vein and fault zone.The chargeability anomaly extends and amplifies with depth. The most amount of specific electrical resistance has been observed in the quartz-rich conglomerate. Interpretation of IP/RS data reveals that the chargeable source is extending in deeper beds (presumably sulphid ore-formation) which needs to be verified by boring operation. Geophysical surveys are significantly commensurate with field observations, ore-forming and geochemical data. Utilization Geophysical methods in different style of ore-deposits and interpretation of obtained information by means of geological, ore-forming and geochemistry data is considered to be a big step towards subterranean exploration and deposits modeling.
整合地质和地球物理研究,以便在伊朗呼罗珊-拉扎维省Zaveh矿化区进行矿产勘探
Zaveh铜矿位于Torbat-e-Heydarieh市的东南部,位于呼罗珊省Khaf Kashmar Bardaskan岩浆带(KKBMB)的中部。该地区的岩性包括侏罗纪和白垩纪沉积岩以及始新世火山单元。矿石的形成受断层活动的控制,代表了在富含石英的砾岩中形成的脉-细脉式东西走向。主要矿物为黄铜矿、黄铁矿和毒砂,次要矿物包括孔雀石、天青石-辉铜矿、斑铜矿、铜硫酸盐、wad(氢氧化锰)、赤铁矿、针铁矿、黄钾铁矾、褐铁矿和(在较小程度上)温石棉。主要蚀变为硅化,与矿脉成矿有关。火山岩单元具有丙基玄武岩、绢云母、碳酸盐岩和硅化蚀变。矿床本身代表Cu(最大2.1%)、As(>1%)、Sb(~105 gr/T)、Pb(4371 gr/T)和Zn(最大1.1%)的异常。感应极化和电阻率(IP/RS)测量揭示了最具荷电性的异常对应于成矿脉和断裂带的中心。荷电性异常随着深度的增加而扩大。在富含石英的砾岩中观察到的电阻率最高。IP/RS数据的解释表明,可充电源正在更深的矿层中延伸(可能是硫化物矿床),需要通过钻孔作业进行验证。地球物理调查与实地观测、成矿和地球化学数据相当。在不同类型的矿床中利用地球物理方法,并通过地质、成矿和地球化学数据解释所获得的信息,被认为是朝着地下勘探和矿床建模迈出的一大步。
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来源期刊
Iranian Journal of Earth Sciences
Iranian Journal of Earth Sciences GEOSCIENCES, MULTIDISCIPLINARY-
CiteScore
1.40
自引率
12.50%
发文量
0
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