| 山东桃科铜镍矿床矿物学特征及其对矿床成因的指示 |
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| 引用本文： | 孙涛,李超,张增奇,孙斌,程伟,王登红.山东桃科铜镍矿床矿物学特征及其对矿床成因的指示[J].矿床地质,2016,35(4):724-736. |
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| 作者姓名： | 孙涛 李超 张增奇 孙斌 程伟 王登红 |
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| 作者单位： | 1. 云南大学资源环境与地球科学学院,云南昆明650091;中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室,北京100037;2. 国家地质实验测试中心中国地质科学院Re-Os重点实验室,北京,100037;3. 山东省地质科学实验研究院国土资源部金矿成矿过程与资源利用重点实验室山东省金属矿产成矿地质过程与资源利用重点实验室,山东济南,250013;4. 中国地质科学院矿产资源研究所国土资源部成矿作用与资源评价重点实验室,北京,100037 |
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| 基金项目： | 本文得到"国家自然科学青年基金"项目（编号：41402070）和 "中国矿产地质与成矿规律综合集成和服务"项目（编号：DD20160346）联合资助 |
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| 摘 要： | 桃科铜镍矿床是山东目前发现的仅有的2处铜镍矿床之一,也是中国最早开采的铜镍矿床之一,同时也可能是中国形成时代最老的铜镍矿床。含矿岩体主要由橄榄辉长苏长岩、蚀变辉长苏长岩、变辉长岩、角闪岩组成,主要矿物为贵橄榄石、古铜辉石、普通辉石、角闪石和中基性斜长石(培长石、中长石、拉长石),岩石常发生强烈的绿泥石化、钠黝帘石化、纤闪石化;矿石中黄铜矿+镍黄铁矿+磁黄铁矿的矿物组合,为典型的岩浆型铜镍硫化物矿床的矿物组合;岩石及矿物特征表明矿床为岩浆作用的产物。通过矿物显微结构特征以及计算得出:桃科岩体橄榄石开始结晶温度大约在1421℃左右,古铜辉石和普通辉石的结晶温度在1030~1230℃之间,两矿物相在岩石中可以共存。矿石中大量镍黄铁矿蚀变为针镍矿,黄铜矿在边部蚀变为斑铜矿,以及黄铁矿较高的Co/Ni比值(0.1~12.9,平均4.1),都表明矿床在后期遭受了强烈的热液叠加改造作用。
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| 关 键 词： | 地球化学 矿物学特征 矿床成因 铜镍硫化物矿床 桃科 山东 |
| 收稿时间： | 6/8/2015 12:00:00 AM |
| 修稿时间： | 2016/6/15 0:00:00 |
Mineralogical characteristics of Taoke Cu-Ni sulfide deposit in Shandong Province and its indications for metallogenic genesis |
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| SUN Tao,LI Chao,ZHANG ZengQi,SUN Bin,CHENG Wei and WANG DengHong.Mineralogical characteristics of Taoke Cu-Ni sulfide deposit in Shandong Province and its indications for metallogenic genesis[J].Mineral Deposits,2016,35(4):724-736. |
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| Authors: | SUN Tao LI Chao ZHANG ZengQi SUN Bin CHENG Wei and WANG DengHong |
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| Institution: | School of Resource Environment and Earth Sciences, Yunnan University, Kunming 650091, Yunnan, China;MRL Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China,National Research Center for Geoanalysis, Key Laboratory of Re-Os Isotope Geochemistry, CAGS, Beijing 100037, China,Shandong Institute of Geological Sciences, Shandong Key Laboratory of Geological Processes and Resource Utilization in Metallic Minerals, Key Laboratory of Gold Mineralization Processes and Resources Utilization Subordinated to the Ministry of Land and Resources, Jinan 250013, Shandong, China,Shandong Institute of Geological Sciences, Shandong Key Laboratory of Geological Processes and Resource Utilization in Metallic Minerals, Key Laboratory of Gold Mineralization Processes and Resources Utilization Subordinated to the Ministry of Land and Resources, Jinan 250013, Shandong, China,Shandong Institute of Geological Sciences, Shandong Key Laboratory of Geological Processes and Resource Utilization in Metallic Minerals, Key Laboratory of Gold Mineralization Processes and Resources Utilization Subordinated to the Ministry of Land and Resources, Jinan 250013, Shandong, China and MRL Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China |
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| Abstract: | |
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| Keywords: | geochemistry mineralogical characteristics metallogenic genesis Cu-Ni sulfide deposit Taoke Shandong |
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