吉林大学学报(地球科学版) ›› 2015, Vol. 45 ›› Issue (6): 1657-1666.doi: 10.13278/j.cnki.jjuese.201506109

• 地质与资源 • 上一篇    下一篇

安徽铜陵焦冲金矿床成矿流体特征及成矿机制

张志辉1,2,3, 张达3, 狄永军3, 李兴俭3, 阙朝阳4, 马先平5, 杜泽忠1,2   

  1. 1. 中国地质调查局发展研究中心, 北京 100037;
    2. 国土资源部矿产勘查技术指导中心, 北京 100120;
    3. 中国地质大学(北京)地球科学与资源学院, 北京 100083;
    4. 紫金矿业集团西北有限公司, 乌鲁木齐 830026;
    5. 铜陵紫金矿业有限公司, 安徽 铜陵 244100
  • 收稿日期:2015-03-01 发布日期:2015-11-26
  • 通讯作者: 张达(1967),男,教授,博士生导师,主要从事区域成矿学研究,E-mail:zhangda@cugb.edu.cn。 E-mail:zhangda@cugb.edu.cn
  • 作者简介:张志辉(1980),男,博士研究生,主要从事矿床学和和矿产勘查学等方面的研究工作,E-mail:zzh1102114@126.com
  • 基金资助:

    中国地质调查局老矿山技术创新与示范项目(1212011220737);安徽铜陵焦冲金(硫)多金属矿及蛤蟆岭金矿成因及成矿预测研究项目

Characteristics of Fluid Inclusions and Primary Metallogenic Mechanism of Jiaochong Au-S Deposit in Tongling Area, Anhui

Zhang Zhihui1,2,3, Zhang Da3, Di Yongjun3, Li Xingjian3, Que Chaoyang4, Ma Xianping5, Du Zezhong1,2   

  1. 1. Research and Development Center, China Geological Survey, Beijing 100037, China;
    2. Mineral Exploration and Technical Guidance Center, Ministry of Land and Resources, Beijing 100120, China;
    3. School of Earth Sciences and Resources, China University of Geosciences, Beijing 100083, China;
    4. Zijin Mining Group Northwest Co. Ltd., Urumqi 830026, China;
    5. Tongling Zijin Mining Ltd., Tongling 244100, Anhui, China
  • Received:2015-03-01 Published:2015-11-26

PDF (PC)

311

摘要：

安徽铜陵焦冲金矿床位于长江中下游铁铜金银铅锌成矿带铜陵矿集区内,矿体主要赋存在下二叠统栖霞组(P1q)灰岩中。根据野外地质特征及含矿组合,将矿床划分为3个成矿阶段:黄铁矿-石英阶段、石英-硫化物阶段和石英-方解石阶段。笔者对该矿床不同成矿阶段石英和方解石进行了详细的岩相学观察和显微测温研究。结果表明,该矿床的均一温度区间分别为410~440 ℃、320~350 ℃和260~320 ℃。显示早期的黄铁矿-石英阶段、石英-硫化物阶段,直到晚期的石英-方解石阶段均一温度呈现逐渐减低的趋势。根据公式计算矿床成矿深度约1.5 km,成矿压力400×105 Pa。流体沸腾作用是金属硫化物大量沉淀的主要机制。

关键词: 流体包裹体, 成矿压力, 焦冲金矿床, 成矿流体, 成矿机制, 铜陵矿集区

Abstract:

Jiaochong Au-S deposit is located in Tongling ore concentration area which is in the middle and lower reach of Yangtze River. The ore bodies are mainly existed in the limestone of Qixia Group in Early Permian. According to the research of the field geological characteristics and ore composition, Jiaochong ore was fromed in the three phases: early quartz stage, middle quartz-sulfide stage, and late calcite stage. Through the detailed petrographic observation and microscopic measurement to the quartz and calcite of different ore-forming stages, the fluid homogenization temperatures fall into the three scopes: 410-440 ℃, 320-350 ℃, and 260-320 ℃ correspondingly, showing a downward trend from the early quartz stage to the late calcite stage. According to the formula calculation, the metallogenic depth is about 1.5 km; and the mineralization pressure is 400×105 Pa. Fluid boiling action was the main mechanism of metal sulfides precipitation. Trapping pressures of fluid inclusion are used to estimate the ore-forming pressure and depths, so as to provide a theoretical basis for deep prospecting prediction.

Key words: fluid inclusion, ore-forming pressure, Jiaochong gold deposits, ore-forming fluid, metallogenetic mechanism, Tongling ore concentration area

中图分类号: 

  • P611

[1] 常印佛,刘湘培,吴言昌. 长江中下游铜铁成矿带[M]. 北京:地质出版社,1991:1-379. Chang Yinfo, Liu Xiangpei, Wu Yanchang. The Copper-Iron Belt of the Lower and Middle Reaches of the Changjiang River[M]. Beijing: Geological Publishing House, 1991:1-379.

[2] 曾普胜. 安徽铜陵地区成矿流体的叠加改造与大型超大型铜金矿床的关系[R]. 北京:中国地质科学院矿产资源研究所,2003. Zeng Pusheng. Superimposition-Reformation of Metallogenic Fluids and Its Relationship to Large-Superlarge Copper-Gold Deposits in Tongling Area, Anhui Province, China[R]. Beijing:Institute of Mineral Resources, Chinese Academy of Geological Sciences,2003.

[3] 储国正. 铜陵狮子山矿田构造及其控岩控矿作用的研究[J]. 安徽地质,1992,2(2):1-14. Chu Guozheng. Shizishan Orefield Tectonics and the Characteristics of Its Control over Rocks and Ores[J]. Geology of Anhui, 1992, 2(2): 1-14.

[4] 张达,吴淦国,李东旭. 铜陵凤凰山岩体接触带构造变形特征[J]. 地学前缘,2001,8(3):223-229. Zhang Da, Wu Ganguo, Li Dongxu. Characteristics of Contact Structural Deformation of Fenghuangshan Pluton in Tongling, Anhui Province[J]. Earth Science Frontiers, 2001, 8(3):223-229.

[5] 周涛发,岳书仓. 长江中下游铜、金矿床成矿流体系统的形成条件及机理[J]. 北京大学学报:自然科学版,2000,36(5):697-707. Zhou Taofa, Yue Shucang. Forming Conditions and Mechanism for the Fluid Ore-Forming System of the Copper, Gold Deposits in the Middle and Lower Reaches of the Yangtze River Area[J]. Acta Scientiarum Naturalium Universitatis Pekinensis, 2000, 36(5): 697-707.

[6] 王强,许继峰,赵振华,等. 安徽铜陵地区燕山期侵入岩的成因及其对深部动力学过程的制约[J]. 中国科学:D辑,2003,33(4):323-334. Wang Qiang, Xu Jifeng, Zhao Zhenhua, et al. Petrogenesis of the Mesozoic Intrusisive Rocks in the Tongling Area, Anhui Province, China and Their Constraint on Geodynamic Process[J]. Science in China :Series D, 2003, 33(4): 323-334.

[7] 狄永军,赵海玲,吴淦国,等. 铜陵地区燕山期侵入岩成因与三端元岩浆混合作用[J]. 地质论评,2005,51(5):528-538. Di Yongjun, Zhao Hailing, Wu Ganguo, et al. The Genesis for the Intrusive Rocks from Tongling Area During Yanshanian Period and the Mixing of Three-End-Member Magma[J]. Geologica Review, 2005, 51(5): 528-538.

[8] 毛景文,Stein Holly,杜安道,等. 长江中下游地区铜金(钼)矿Re-Os年龄测定及其对成矿作用的指示[J]. 地质学报,2004, 78(1):121-131. Mao Jingwen, Stein H, Du Andao, et al. Molybdenite Re-Os Precise Dating for Molybdenite from Cu-Au-Mo Deposits in the Middle-Lower Reaches of Yangtze River Belt and Its Implications for Mineralization[J]. Acta Geologica Sinica, 2004, 78(1): 121-131.

[9] 张志辉. 安徽铜陵焦冲金硫矿床地质特征及成因研究[D]. 北京:中国地质大学,2009. Zhang Zhihui. Study of the Geological Characteristic, Ore-Controlling Conditions and Genesis for the Jiaochong Au-S Ore Deposition in Tongling Areas, Anhui Province[D]. Beijing: China University of Geosciences, 2009.

[10] 张志辉,张达,狄永军,等.安徽铜陵焦冲金-硫矿床S、Pb同位素组成及其指示意义[J]. 地质通报,2013,32 (10):1643-1652. Zhang Zhihui, Zhang Da, Di Yongjun, et al. Sulfur, Lead Isotope Composition Characteristics of the Jiaochong Au-S Ore Deposit in Tongling Area and Their Indication Significance[J]. Geological Bulletin of China, 2013, 32(10): 1643-1652.

[11] Roedder E. Fluid Inclusions[M]. [S.l.]:Reviews in Mineralogy, 1984, 12: 1-644.

[12] 徐九华,张国瑞,魏浩,等.脉状金矿床的成矿压力与深度:流体包裹体方法及其影响因素[J]. 南京大学学报:自然科学,2012,48(3):266-277. Xu Jiuhua, Zhang Guorui, Wei Hao, et al. Ore-Forming Pressures and Depths of Vein Gold Deposits: Fluid Inclusion Studies and Their Influence Factors[J]. Journal of Nanjing University: Natural Sciences, 2012, 48(3): 266-277.

[13] 孙丰月,金巍,李碧乐,等.关于脉状热液金矿床成矿深度的思考[J]. 长春科技大学学报,2000,30(增刊):27-29. Sun Fengyue, Jin Wei, Li Bile, et al. Considerations on the Mineralizing Depth of Hydrothermal Lode Gold Deposits[J]. Journal of Changchun University of Science and Technology, 2000, 30(Sup.): 27-29.

[14] 安徽省地矿局. 安徽省区域地质志[M]. 北京:地质出版社,1984. Bureau of Geology and Mineral Resourses of Anhui Province. Regional Geology of Anhui Province[M]. Beijing: Geological Publishing House, 1984.

[15] 唐永成,吴言昌,储国正,等. 安徽沿江地区铜多金属矿床地质[M]. 北京:地质出版社, 1998:1-351. Tang Yongcheng, Wu Yanchang, Chu Guozheng, et al. Geology of Copper-Gold Polymetallic Deposits in the Along-Changjiang Area of Anhui Province[M]. Beijing: Geological Publishing House,1998:1-351.

[16] 刘文灿,高德臻,储国正. 安徽铜陵地区构造变形分析及成矿预测[M]. 北京:地质出版社,1996. Liu Wencan, Gao Dezhen, Chu Guozheng. Metallogenic Prognosis and Tectonic Deformation in the Tongling Area, Anhui[M]. Beijing: Geological Publishing House, 1996.

[17] 吴淦国,张达,臧文拴. 铜陵矿集区构造滑脱与分层成矿特征研究[J]. 中国科学: D辑,2003,33(4):300-308. Wu Ganguo, Zhang Da, Zang Wenshuan. Study of Tectonic Layering Motion and Layering Mineralization in the Tongling Metallogenic Cluster[J]. Science in China:Series D,2003, 33(4):300-308.

[18] Potter R W I, Clynne M A, Brown D L. Freezing Point Depression of Aqueous Sodium Chloride Solutions[J]. Econ Geol, 1978, 73: 284-285.

[19] 刘斌,段光贤. NaCl-H2O溶液包裹体的密度式和等容式及其应用[J]. 矿物学报,1987,7(4):345-352. Liu Bin, Duan Guangxian. The Density and Isochoric for NaCl-H2O Fluid Inclusions (Salinity≤25%) and Their Applications[J]. Acta Mineralogica Sinica, 1987, 7(4): 345-352.

[20] 刘斌. 中高盐度NaCl-H2O包裹体的密度式和等容式及其应用[J]. 地质论评,2001,47(6):617-622. Liu Bin. Density and Isochoric Formulae for NaCl-H2O Inclusions with Medium and High Salinity and Their Applications[J]. Geological Review, 2001, 47(6): 617-622.

[21] 邵洁涟,梅建明. 浙江火山岩区金矿床的矿物包裹体标型特征研究及其成因找矿意义[J]. 矿物岩石,1986,6(3):103-111. Shao Jielian, Mei Jianming. On the Study of Typomorphic Characteristics of Mineral Inclusion in the Gold Deposits from Volcanic Terrain in Zhejiang and Its Genetic and Prospecting Significance[J]. Minerals and Rocks, 1986, 6(3): 103-111.

[22] 张文淮,张志坚,伍刚. 成矿流体及成矿机制[J]. 地学前缘,1996,3(3/4):245-252. Zhang Wenhuai, Zhang Zhijian, Wu Gang. Ore-Forming Fluid and Mineralization Mechanism[J]. Earth Science Frontiers, 1996, 3(3/4): 245-252.

[23] 朱永峰. 液态不混溶作用:成矿机制之一:以太行山地区的金矿为例[J]. 矿物岩石地球化学通报,1999,18(1):206-209. Zhu Yongfeng. Fluid Immiscibility: As a Mechanism of Ore-Forming Process: The Gold Deposits in the Taihang Mountains as an Example[J]. Bulletin of Mineralogy, Petrology and Geochemistry, 1999, 18(1): 206-209.
[1] 李向文, 张志国, 王可勇, 孙加鹏, 杨吉波, 杨贺. 大兴安岭北段宝兴沟金矿床成矿流体特征及矿床成因[J]. 吉林大学学报(地球科学版), 2018, 48(4): 1071-1084.
[2] 李文强, 郭巍, 孙守亮, 杨绪海, 刘帅, 侯筱煜. 塔里木盆地巴楚—麦盖提地区古生界油气藏成藏期次[J]. 吉林大学学报(地球科学版), 2018, 48(3): 640-651.
[3] 陈瑞莉, 陈正乐, 伍俊杰, 梁志录, 韩凤彬, 王永, 肖昌浩, 韦良喜, 沈滔. 甘肃合作早子沟金矿床流体包裹体及硫铅同位素特征[J]. 吉林大学学报(地球科学版), 2018, 48(1): 87-104.
[4] 和成忠, 张德会, 吴鸣谦, 夏岩, 张荣臻, 胡铁军. 辽宁青城子姚家沟斑岩型钼矿流体包裹体[J]. 吉林大学学报(地球科学版), 2017, 47(6): 1717-1731.
[5] 门兰静, 孙景贵, 王好均, 柴鹏, 赵克强, 古阿雷, 刘城先. 延边浅成高硫化热液金矿床的成矿流体起源与演化:以杜荒岭和九三沟矿床为例[J]. 吉林大学学报(地球科学版), 2017, 47(5): 1365-1382.
[6] 陈晶源, 王长明, 贺昕宇, 陈良, 吴彬, 王乔, 张端, 姚恩亚, 董猛猛. 河南瓦房铅锌矿床地质、流体包裹体和稳定同位素特征[J]. 吉林大学学报(地球科学版), 2017, 47(5): 1383-1404.
[7] 张锦让, 温汉捷, 邹志超. 滇西北兰坪盆地金满脉状铜矿床成矿流体特征及其成矿意义[J]. 吉林大学学报(地球科学版), 2017, 47(3): 706-718.
[8] 张艳, 韩润生, 魏平堂, 邱文龙. 云南会泽矿山厂铅锌矿床流体包裹体特征及成矿物理化学条件[J]. 吉林大学学报(地球科学版), 2017, 47(3): 719-733.
[9] 赵彦德, 齐亚林, 罗安湘, 程党性, 李继宏, 黄锦绣. 应用流体包裹体和自生伊利石测年重构鄂尔多斯盆地侏罗系油藏烃类充注史[J]. 吉林大学学报(地球科学版), 2016, 46(6): 1637-1648.
[10] 王力, 孙丽伟. 山东省寺庄金矿床成矿流体特征[J]. 吉林大学学报(地球科学版), 2016, 46(6): 1697-1710.
[11] 张延军, 孙丰月, 李碧乐, 李良, 陈扬. 青海湟中县三岔金矿流体包裹体特征及矿床成因[J]. 吉林大学学报(地球科学版), 2016, 46(5): 1342-1353.
[12] 王晰, 段明新, 任云生, 侯召硕, 孙德有, 郝宇杰. 内蒙古额尔古纳地区八大关铜钼矿床流体包裹体特征与成矿时代[J]. 吉林大学学报(地球科学版), 2016, 46(5): 1354-1367.
[13] 吴海枝, 韩润生, 吴鹏. 楚雄盆地六苴砂岩型铜矿床成矿流体性质及演化[J]. 吉林大学学报(地球科学版), 2016, 46(2): 398-411.
[14] 王可勇, 付丽娟, 韦烈民, 王志高. 辽宁榛子沟铅锌矿床热液叠加成矿作用特征及成矿流体来源[J]. 吉林大学学报(地球科学版), 2016, 46(1): 80-90.
[15] 韩润生, 李波, 倪培, 邱文龙, 王旭东, 王天刚. 闪锌矿流体包裹体显微红外测温及其矿床成因意义——以云南会泽超大型富锗银铅锌矿床为例[J]. 吉林大学学报(地球科学版), 2016, 46(1): 91-104.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
版权所有 © 《吉林大学学报(地球科学版)》编辑部
地址：长春市西民主大街938号(130026)　电话：+86-431-88502374；13756165364　E-mail: xuebao1956@jlu.edu.cn
本系统由北京玛格泰克科技发展有限公司设计开发