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The Kiloton Class Jiaojia Gold Deposit in Eastern Shandong Province and Its Genesis

Acta Geologica Sinica(English Edition) 2014年第3期88卷 801-824页

作者： SONG Mingchun DENG Jun YI Pihou YANG Liqiang CUI Shuxue XU Junxiang ZHOU Mingling HUANG Tailing SONG Guozheng SONG Yingxin Shandong Provincial Bureau of Geology & Mineral Resources Shandong Provincial Engineering Research Center for geological prospecting China University of Geosciences 6th Geology & Mineral Resources Survey Institute of Shandong Province Shandong Provincial Geological Sciences Institute

The recent deep prospecting results in the Jiaojia area of Eastern Shandong Province indicate that the Jiaojia ore field composed of several individual gold deposits as previously suggested is actually an ultra-large gold *** deposit covers an area of ～40 km2,and shows a structural control by the Jiaojia fault and its secondary *** orebodies generally occur along the same mineralization-alteration belt,and the main orebodies intersect with each other or exhibit a parallel or overlapping *** deposit＇s reserves are estimated to be 1,200t of gold,being the first gold deposit of more than 1000t gold reserves in *** No.Ⅰ-1 orebody in the Shaling-deep Sizhuang ore blocks holds gold reserves greater than 350 t,or 29 percent of the total reserves,followed by the No.Ⅰ orebody in Matang-Jiaojia ore blocks with exceeding 150t gold *** deposit mainly occurs in the footwall of the Jiaojia fault,and presents zoned patterns in mineralization,alteration and *** strongly mineralized zones agree with strongly altered and tectonically fractured *** orebodies display strataform-like,veinlike or lenticular shapes,and generally show characteristics of pinching out and reappearing,branching and converging,expanding and *** orebodies commonly occur along positions where the fault strike changes and in gentle locations with dips changing from steep to *** main orebodies are parallel to the main plane of the orecontrolling fault,and tend to be gentle from the surface to the *** orebodies mainly plunge to the southwest,with plunge angle of 45°-606° Orebodies near the main plane of the ore-controlling fault have more gold resource than those away from main fault *** slant depth of orebodies is generally larger than the length along its strike direction; orebodies become thick and gold grades become low from the shallow area to the deep ***-forming fluids are H2O-CO2-NaCl±CH4 type with medium-tempe

关键词： Kiloton class Jiaojia gold deposit deep prospecting Jiaojia fault ore-hosting regularity,genesis Eastern Shandong Province

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Application of tensor CSAMT with high-power orthogonal signal sources in Jiama porphyry copper deposit,South Tibet

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China Geology 2023年第1期6卷 37-49页

作者： Peng-liang Yu Ting Qu Ri-zheng He Jian-li Liu Su-fen Wang Xiao-long Chen Shaanxi Geology and Mining Geophysical and Geoehemical prospecting Team Co. Ltd.Xi’an 710043China Chinese Academy of Geological Sciences Beijing 100037China

The Jiama porphyry copper deposit in Tibet is one of the proven supergiant copper deposits in the Qinghai-Tibet Plateau at present,with the reserves of geological resources equivalent to nearly 20×10^(6) ***,it features wavy and steep terrain,leading to extremely difficult field operation and heavy *** study attempts to determine the effects of the tensor controlled-source audiomagnetotellurics(CSAMT)with high-power orthogonal signal sources(also referred to as the high-power tensor CSAMT)when it is applied to the deep geophysical exploration in plateaus with complex terrain and mining areas with strong *** test results show that the high current provided by the highpower tensor CSAMT not only greatly improved the signal-to-noise ratio but also guaranteed that effective signals were received in the case of a long transmitter-receiver ***,the tensor data better described the anisotropy of deep geologic *** addition,the tests also show that when the transmitting current reaches 60 A,it is still guaranteed that strong enough signals can be received in the case of the transmitter-receiver distance of about 25 km,sounding curves show no near field effect,and effective exploration depth can reach 3 *** 2D inversion results are roughly consistent with drilling results,indicating that the high-power tensor CSAMT can be used to achieve nearly actual characteristics of underground electrical ***,this method has great potential for application in deep geophysical exploration in plateaus and mining areas with complex terrain and strong interference,*** study not only serves as important guidance on the prospecting in the Qinghai-Tibet Plateau but also can be used as positive references for deep mineral exploration in other areas.

关键词： Jiama porphyry copper deposit Supergiant copper polymetallic deposit Tensor CSAMT of 150 kw High power 2D inversion deep prospecting Mineral exploration engineering Xizang(Tibet)

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Geology and mineralization of the Sanshandao supergiant gold deposit(1200 t)in the Jiaodong Peninsula,China:A review

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China Geology 2021年第4期4卷 686-719页

作者： Ming-chun Song Zheng-jiang Ding Jun-jin Zhang Ying-xin Song Jun-wei Bo Yu-qun Wang Hong-bo Liu Shi-yong Li Jie Li Rui-xiang Li in Wang Xiang-dong Liu Liang-liang Zhang Lei-lei Dong Jian Li Chun-yan He Shandong Provincial No.6 Exploration Institute of Geology and Mineral Resources Weihai 264209China Shandong Provincial Bureau of Geology and Mineral Resources Jinan 250013China Shandong Provincial No.3 Exploration Institute of Geology and Mineral Resources Yantai 264003China Shandong Institute of Geological Sciences Jinan 250013China Shandong Provincial Ruihai Mining Limited Company Laizhou 261400China Shandong Institute of Geophysical&Geochemical Exploration Jinan 250013China Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China School of Resources and Environmental Engineering Shandong University of TechnologyZibo 255000China

The Jiaodong Peninsula in Shandong Province,China is the world’s third-largest gold metallogenic area,with cumulative proven gold resources exceeding 5000 *** the past few years,breakthroughs have been made in deep prospecting at a depth of 500‒2000 m,particularly in the Sanshandao area where a huge deep gold orebody was *** on previous studies and the latest prospecting progress achieved by the project team of this study,the following results are summarized.(1)3D geological modeling results based on deep drilling core data reveal that the Sanshandao gold orefield,which was previously considered to consist of several independent deposits,is a supergiant deposit with gold resources of more than 1200 t(including 470 t under the sea area).The length of the major orebody is nearly 8 km,with a greatest depth of 2312 m below sea level and a maximum length of more than 3 km along their dip direction.(2)Thick gold orebodies in the Sanshandao gold deposit mainly occur in the specific sections of the ore-controlling fault where the fault plane changes from steeply to gently inclined,forming a stepped metallogenic model from shallow to deep *** reason for this strong structural control on mineralization forms is that when ore-forming fluids migrated along faults,the pressure of fluids greatly fluctuated in fault sections where the fault dip angle *** the solubility of gold in the ore-forming fluid is sensitive to fluid pressure,these sections along the fault plane serve as the target areas for deep prospecting.(3)Thermal uplifting-extensional structures provide thermodynamic conditions,migration pathways,and deposition spaces for gold ***,the changes in mantle properties induced the transformation of the geochemical properties of the lower crust and magmatic *** further led to the reactivation of ore-forming elements,which provided rich materials for gold mineralization.(4)It can be concluded from previous research re

关键词： Gold deposit deep prospecting Thermal uplifting-extension mineralization Transformation of mantle properties Stepped metallogenic model Mineral exploration engineering Jiaodong-type gold deposits Sanshandao Jiaodong Peninsula China

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