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矿产勘查与资源评价

东天山卡拉塔格地区玉带铜矿床地质特征及成因

  • 陈磊 , 1, 2 ,
  • 段宝福 1 ,
  • 吕道 1 ,
  • 曾建朋 1 ,
  • 张朔 1 ,
  • 曾兴富 1 ,
  • 黄美俊 , 3
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  • 1. 东华理工大学地球科学学院,江西 南昌 330013
  • 2. 中南大学有色金属成矿预测与地质环境监测教育部重点实验室,湖南 长沙 410083
  • 3. 江西省地质调查勘查院矿产勘查所,江西 南昌 330038
黄美俊(1990-),男,湖南娄底人,工程师,从事矿产勘查工作。

陈磊(1988-),男,湖南郴州人,讲师,从事成矿规律与成矿预测研究工作。

收稿日期: 2022-10-08

  修回日期: 2023-02-20

  网络出版日期: 2023-07-20

基金资助

国家自然科学基金项目“东天山卡拉塔格铜矿床成矿条件和矿床成因研究”(41572077)

有色金属成矿预测与地质环境监测教育部重点实验室(中南大学)开放基金资助项目“卡拉塔格玉带斑岩铜矿成矿作用研究”(2019YSJS09)

江西省教育厅科学技术研究项目“东天山卡拉塔格玉带斑岩铜矿成矿机制研究”(GJJ2200760)

东华理工大学博士科研启动基金项目“东天山卡拉塔格西二区铁铜矿成矿作用研究”(DHBK2019007)

Geological Characteristics and Genesis of Yudai Copper Deposit in Kalatag District,Eastern Tianshan

  • Lei CHEN , 1, 2 ,
  • Baofu DUAN 1 ,
  • Dao LV 1 ,
  • Jianpeng ZENG 1 ,
  • Shuo ZHANG 1 ,
  • Xingfu ZENG 1 ,
  • Meijun HUANG , 3
Expand
  • 1. School of Earth Science, East China University of Technology, Nanchang 330013, Jiangxi, China
  • 2. Key Laboratory of Metallogenic Prediction of Nonferrous Metals and Geological Environment Monitoring(Central South University), Ministry of Education, Changsha 410083, Hunan, China
  • 3. Mineral Exploration Institute of Jiangxi Geological Survey and Exploration Institute, Nanchang 330038, Jiangxi, China

Received date: 2022-10-08

  Revised date: 2023-02-20

  Online published: 2023-07-20

本文亮点

玉带铜矿床位于东天山大南湖—头苏泉岛弧带北缘的卡拉塔格地区,为近年来发现的中型铜矿床。通过野外地质调查和室内研究,对该矿床地质特征及成因进行探讨,发现矿床含矿地质建造为一套火山岩—火山碎屑岩,成矿地质体为石英闪长玢岩,矿体产于石英闪长玢岩体及其与围岩接触带,受断裂控制,主要呈脉状和透镜状。矿石类型以浸染状和细脉状为主,矿石组构以粒状结构,浸染状和细脉状构造为主,金属矿物主要为黄铜矿和黄铁矿,脉石矿物主要为石英,其次为绿泥石和绢云母。成矿过程可划分为石英—磁铁矿、钾长石—石英—黄铁矿、石英—黄铁矿—黄铜矿—辉钼矿和石英—碳酸盐—石膏4个阶段。矿区普遍发育钾化、硅化、绿泥石化、绿帘石化、绢云母化和碳酸盐化等蚀变,具带状分布特征,水平方向上由石英闪长玢岩中心向外可划分为钾化—硅化带、硅化—绢云母化带、泥化带和绿泥石—绿帘石化—碳酸盐化带;垂向上由石英闪长玢岩中心向外可划分为钾化—硅化带、硅化—绢云母化—黄铁矿化带和绿泥石—绿帘石化—碳酸盐化带。玉带铜矿床的成矿地质条件、矿体特征及围岩蚀变特征均与大南湖—头苏泉岛弧带斑岩型矿床一致,属于斑岩型铜矿床。

本文引用格式

陈磊 , 段宝福 , 吕道 , 曾建朋 , 张朔 , 曾兴富 , 黄美俊 . 东天山卡拉塔格地区玉带铜矿床地质特征及成因[J]. 黄金科学技术, 2023 , 31(3) : 396 -407 . DOI: 10.11872/j.issn.1005-2518.2023.03.134

Highlights

Yudai copper deposit is a newly discovered and medium-sized copper deposit located in the Kalatag district,northern Dananhu-Tousuquan island-arc belt,eastern Tianshan,NW China.Through field geological survey and laboratory research,the geological characteristics and genesis of the deposit were discussed.The ore-bearing geological formation is a set of volcanic-pyroclastic rocks,and the orebody is hosted in the porphyritic quartz diorite and volcanic rocks of the Daliugou Formation.It is controlled by the faults and is mainly vein and lenticular type.The ore types are mainly disseminated and veined and the structures are mainly granular,disseminated and veined.The metal minerals are mainly chalcopyrite and pyrite,and the gangue minerals are mainly quartz,followed by chlorite and sericite.The ore-forming process can be divided into four stages,namely quartz-magnetite stage,K-feldspar-quartz-pyrite stage,quartz-pyrite-chalcopyrite-molybdenite stage and quartz-carbonate-gypsum stage.The hydrothermal alteration is characterized by K-feldspar,silica,chlorite,epidote,sericite and carbonate.The alteration is typically zoned from center to outer with K-feldspar-silica zone,silica-sericite zone,argillic zone and chlorite-epidote- carbonate zone,and K-feldspar-silica zone,silica-sericite-pyrite zone and chlorite-epidote-carbonate zone from top to bottom. The metallogenic geological conditions,ore body characteristics and hydrothermal alteration of the Yudai copper deposit are consistent with the porphyry copper deposit in the Dananhu-Tousuquan island-arc belt.Therefore,it is considered that Yudai copper deposit belongs to porphyry copper deposit.

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我国发布13种矿产资源全球储量评估数据

7月8日,自然资源部中国地质调查局全球矿产资源战略研究中心发布《全球矿产资源储量评估报告2023》。该报告在2021年首次发布的《全球锂、钴、镍、锡、钾盐矿产资源储量评估报告》基础上新增铁、锰、铬、铜、铝、铅、锌和磷8种矿产,并更新了锂、钴、镍、锡和钾盐5种矿产数据,全面客观地评估了截至2021年底全球13种矿产资源储量信息。

报告采集覆盖全球150个国家的2万余个矿业项目数据,并对全球不同储量体系数据和一些国家公布的储量数据按统一标准进行对标和合理修正,最终获得可靠、可信的全球矿产资源储量评估数据。报告数据显示,全球铁矿石储量1 643亿吨、资源量5 828亿吨,全球锰矿储量20.34亿吨、资源量80.73亿吨,全球铬铁矿储量20.42亿吨、资源量43.01亿吨,全球铜矿储量82 163万吨、资源量191961万吨,全球铝土矿储量153亿吨、资源量432亿吨,全球铅矿储量7 547万吨、资源量27 466万吨,全球锌矿储量22 567万吨、资源量63 578万吨,全球镍矿储量9 414万吨、资源量28 063万吨,全球锡矿储量327万吨、资源量1 002万吨,全球钴矿储量668万吨、资源量2 780万吨,全球锂矿(碳酸锂当量)储量13 488万吨、资源量38 852万吨,全球磷矿储量340亿吨、资源量1 068亿吨,全球钾盐(氯化钾当量)储量149亿吨、资源量690亿吨。

报告显示,全球铁、锰、铬、铝、磷、钾盐和锂资源储量丰富,而锡、铅、锌、镍、钴、铜等资源的保障程度较低。我国这13种矿产的储量在全球占比差异较大,其中锡、铅、锌和锰4个矿种的资源储量全球占比超过10%,属于优势矿产;而其他9种矿产资源的储量全球占比较低,属于紧缺矿产。

该报告的发布进一步丰富了具有我国自主知识产权的全球储量评估体系,为积极推进全球矿业合作、构建全球矿业命运共同体贡献出中国智慧和力量。据悉,中国地质调查局计划“十四五”期间将完成对40种主要矿产的全球储量评估,定期动态发布评估报告,提供权威的全球矿产储量数据信息。

脚注

http://www.goldsci.ac.cn/article/2023/1005-2518/1005-2518-2023-31-3-396.shtml

野外地质调查工作得到了哈密红石矿业有限公司的热情帮助,长安大学邓小华教授、中国科学院新疆生态与地理研究所毛启贵研究员、北京矿产地质研究院有限责任公司赵路通高工和徐巧高工在论文写作过程中给予悉心指导,在此一并表示衷心感谢!

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