青海也日更金铜镍多金属矿地质特征与找矿远景

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英文篇名：Aracteristics and prospecting potentiality of Yerigeng Au-Cu-Ni polymetallic ore field in Qinghai Province 作者：王艳 英文作者：WANG Yan;The Third Institute Of Qinghai Non-ferrous Geological Exploration Bureau; 关键词：金铜镍多金属 ; 矿化特征 ; 矿化蚀变 ; 找矿远景 ; 也日更 英文关键词：Au-Cu-Ni polymetallic;;mineralization characteristic;;alteration;;geophysical and geochemical prospecting anomaly;;exploration prospect 中文刊名：矿产勘查 英文刊名：Mineral Exploration 机构：青海省有色第三地质勘查院; 出版日期：2019-04-28 出版单位：矿产勘查 年：2019 期：04 基金：中国地质调查局项目(编号:12120114081401);; 青海省地质勘查基金项目(编号:[2016]89)联合资助 语种：中文; 页：147-155 页数：9 CN：11-5875/TD ISSN：1674-7801 分类号：P618.2

摘要

青海省海西地区是中国西北一个非常重要的金属及非金属成矿区。也日更金铜镍多金属矿床周边古老变质岩系发育,华里西期、印支期构造岩浆活动频繁并且强度大,构造作用较复杂,近EW向和NWW向断裂构造及受其控制的中酸性脉岩发育,围岩蚀变现象明显,局部地段显示了较为明显的金、铜、镍等多金属矿化,同时有1∶50000及1∶25000化探综合异常显示,1∶5000地物化剖面异常清晰,最后通过探槽工程揭露,显示出该区具有较好的成矿远景。
        Haixi area of Qinghai is a very important metallic and non-metallic mineralization area in the northwest of China.Old metamorphic series are widely developed in Yerigeng Au-Cu-Ni polymetallic ore field and surrounding area.It corresponds frequent and intense magmatic activity,complex structures in Variscan and Indosinian period.The nearly EW-trending faults and NWW-trending faults structure and intermediate-acidic vein rocks which are controlled by the fault structure are well developed.The phenomenon of wall rock alterrtion is obvious,and Au-Cu-Ni polymetallic mineralization is obvious locally.Geochemical prospecting works at 1 ∶ 50,000 and 1 Haixi area of Qinghai is a very important metallic and non-metallic mineralization area in the northwest of China.Old metamorphic series are widely developed in Yerigeng Au-Cu-Ni polymetallic ore field and surrounding area.It corresponds frequent and intense magmatic activity,complex structures in Variscan and Indosinian period.The nearly EW-trending faults and NWW-trending faults structure and intermediate-acidic vein rocks which are controlled by the fault structure are well developed.The phenomenon of wall rock alterrtion is obvious,and Au-Cu-Ni polymetallic mineralization is obvious locally.Geochemical prospecting works at 1 ∶ 50,000 and 1 ∶ 25,000 scale shows clear anomalies,and composite geophysical and geochemical prospecting section at 1 ∶ 5,000 shows clear anomalies.At last,the obvious mineralization parts are revealed through exploratory trenching.It appears that area has favorable metallogenic prospect.25,000 scale shows clear anomalies,and composite geophysical and geochemical prospecting section at 1 ∶ 5,000 shows clear anomalies.At last,the obvious mineralization parts are revealed through exploratory trenching.It appears that area has favorable metallogenic prospect.

引文

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