Genetic Types and Metallogenic Model for the Polymetallic Copper-Gold Deposits in the Tongling Ore District, Anhui Province, Eastern China

FU Zhongyang; XU Xiaochun; HE Jun; FAN Ziliang; XIE Qiaoqin; DU Jianguo; CHEN Fang

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Genetic Types and Metallogenic Model for the Polymetallic Copper-Gold Deposits in the Tongling Ore District, Anhui Province, Eastern China

机译：中国东部铜陵矿区多金属铜金矿床成矿类型及成矿模式

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The Tongling ore district is one of the most economically important ore areas in the Middle-Lower Yangtze River Metallogenic Belt,eastern China.It contains hundreds of polymetallic copper-gold deposits and occurrences.Those deposits are mainly clustered (from west to east) within the Tongguanshan,Shizishan,Xinqiao,Fenghuangshan,and Shatanjiao orefields.Until recently,the majority of these deposits were thought to be skarn-or porphyry-skarn-type deposits;however there have been recent discoveries of numerous vein-type Au,Ag,and Pb-Zn deposits that do not fall into either of these categories.This indicates that there is some uncertainty over this classification.Here,we present the results of several systematic geological studies of representative deposits in the Tongling ore district.From investigation of the ore-controlling structures,lithology of the host rock,mineral assemblages,and the characteristics of the mineralization and alteration within these deposits,three genetic types of deposits (skarn-,porphyry-,and vein-type deposits) have been identified.The spatial and temporal relationships between the orebodies and Yanshanian intrusions combined with the sources of the ore-forming fluids and metals,as well as the geodynamic setting of this ore district,indicate that all three deposit types are genetically related each other and constitute a magmatic-hydrothermal system.This study outlines a model that relates the polymetallic copper-gold porphyry-,skarn-,and vein-type deposits within the Tongling ore district.This model provides a theoretical basis to guide exploration for deep-seated and concealed porphyry-type Cu (-Mo,-Au) deposits as well as shallow vein-type Au,Ag,and Pb-Zn deposits in this area and elsewhere.

机译：铜陵矿区是中国东部中下游长江成矿带中最经济重要的矿区之一，它包含数百个多金属铜金矿床和矿床，这些矿床主要集中（从西向东）。直到最近，这些矿床大多数仍被认为是矽卡岩型或斑岩矽卡岩型矿床;但是最近发现了许多脉型金，银，铅锌矿床和铅锌矿床都不属于这两个类别。这表明该分类存在一定的不确定性。在此，我们介绍了铜陵矿区代表性矿床的若干系统地质研究结果。控矿构造，主岩岩性，矿物组合以及这些矿床内的矿化和蚀变特征，三种成因类型识别出了矿床（矽卡岩，斑岩和脉型矿床）。矿体与燕山岩侵入体之间的时空关系，以及成矿流体和金属的来源，以及该矿床的地球动力学背景矿区，表明这三种矿床具有遗传上的联系，并构成了岩浆热液系统。本研究概述了铜陵矿区内多金属铜金斑岩，矽卡岩和脉型矿床的关联模型。该模型为该地区及其他地区的深部和隐蔽斑岩型铜（-Mo，-Au）矿床以及浅脉型Au，Ag和Pb-Zn矿床的勘探提供了理论基础。

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来源
《地质学报（英文版）》 |2019年第1期|88-110|共23页
作者
FU Zhongyang; XU Xiaochun; HE Jun; FAN Ziliang; XIE Qiaoqin; DU Jianguo; CHEN Fang;
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作者单位

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;

School of Resources and Environmental Engineering, Hefei University of Technology, Hefei 230009, China;

Geological Survey of Anhui Province, Hefei 230001, China;

Geological Survey of Anhui Province, Hefei 230001, China;

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Genetic Types and Metallogenic Model for the Polymetallic Copper-Gold Deposits in the Tongling Ore District, Anhui Province, Eastern China

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