云南省马厂箐Cu-Mo-Au多金属矿集区成矿系统
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摘要
马厂箐地区是滇西成矿带内一个典型的与喜马拉雅期富碱侵入岩有关的斑岩型铜-钼-金多金属矿集区,发育有斑岩型钼铜、接触交代型铜钼(金)和热液脉型金银铅锌等多种类型矿化。其矿化和蚀变类型及成矿元素组合,在空间上具有明显的以岩体为中心的分带性;岩浆活动与铜钼金成矿作用具有同时性。这3种矿化类型的形成受控于马厂箐斑岩岩浆系统,该岩浆系统提供了成矿的物质、流体和动力。文章在分析成矿证据的基础上,通过对成矿系统结构的剖析,认为正是马厂箐岩体所提供的热动力条件促使从岩浆体中分异出来的成矿流体由岩体向外运移,随着岩体内构造裂隙、接触带构造以及围岩中破碎带等成矿物理化学条件的改变,在不同的边界条件下发生了不同性质的成矿作用,形成了不同的蚀变和矿化类型及成矿元素组合,总体显示出,随着热液成矿作用的进行,矿化由斑岩体向接触带和围岩推进,成矿由高温向低温的演化趋势。马厂箐铜-钼-金多金属矿集区成矿系统的建立,将对滇西成矿带内其他矿集区的成矿理论研究和找矿勘查实践具有借鉴和指导意义。
As a typical porphyry Cu-Mo-Au ore concentration area related to alkaline-rich intrusive rocks in western Yunnan ore belt,Machangqing has many mineralization types such as porphyry Cu-Mo mineralization,contact metasomatic Cu-Mo-Au mineralization and hydrothermal Au-Ag-Pb-Zn lodes.Alteration-mineralization types and ore-forming element associations show clear spatial zones around the porphyry.The magmatic activity is synchronous to Cu-Mo-Au mineralization.The three types are genetically controlled by the Machangqing porphyry magma system which supplied material,fluid and dynamic force for the mineralization.Based on a detailed analysis of the mineralization evidence and the structure of the ore system,the authors have concluded that the thermal dynamic force from Machangqing intrusion caused the migration of the ore-forming fluid from the magma outwards.With the variation of physical and chemical conditions of fissures in the intrusive body as well as contact structures and fracture zones in the wall rock,there occurred different mineralization types and metallogenic element associations under different conditions.In general,with the evolution of hydrothermal mineralization,the mineralization was developed from porphyry through the contact zone to the wall rock,and from high-T to low-T correspondingly.The establishment of the Cu-Mo-Au polymetallic metallogenic system for the Machangqing ore concentration area will help the study of mineralization theory and the exploration practice in the west Yunnan metallogenic belt.
As a typical porphyry Cu-Mo-Au ore concentration area related to alkaline-rich intrusive rocks in western Yunnan ore belt,Machangqing has many mineralization types such as porphyry Cu-Mo mineralization,contact metasomatic Cu-Mo-Au mineralization and hydrothermal Au-Ag-Pb-Zn lodes.Alteration-mineralization types and ore-forming element associations show clear spatial zones around the porphyry.The magmatic activity is synchronous to Cu-Mo-Au mineralization.The three types are genetically controlled by the Machangqing porphyry magma system which supplied material,fluid and dynamic force for the mineralization.Based on a detailed analysis of the mineralization evidence and the structure of the ore system,the authors have concluded that the thermal dynamic force from Machangqing intrusion caused the migration of the ore-forming fluid from the magma outwards.With the variation of physical and chemical conditions of fissures in the intrusive body as well as contact structures and fracture zones in the wall rock,there occurred different mineralization types and metallogenic element associations under different conditions.In general,with the evolution of hydrothermal mineralization,the mineralization was developed from porphyry through the contact zone to the wall rock,and from high-T to low-T correspondingly.The establishment of the Cu-Mo-Au polymetallic metallogenic system for the Machangqing ore concentration area will help the study of mineralization theory and the exploration practice in the west Yunnan metallogenic belt.
引文
毕献武,胡瑞忠,叶造军,邵树勋.1999.A型花岗岩类与铜成矿关系研究--以马厂箐铜矿为例[J].中国科学(D辑),2(6):489-495.
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邓晋福,罗照华,苏尚国,莫宣学,于炳松,赖兴运,谌宏伟.2004.岩石成因、构造环境与成矿作用[M].北京:地质出版社.
郭晓东,王治华,屈文俊.2008.云南省马厂箐斑岩型铜、钼矿辉钼矿Re-Os年龄及其地质意义[A].2008年第九届全国矿床会议论文集.453-454.
郭晓东,侯增谦,陈祥,王治华.2009a.云南马厂箐富碱斑岩埃达克岩性质的厘定及其成矿意义[J].岩石矿物学杂志,28(4):375-386.
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郭晓东,王治华,王欣,刘烊,周晓峰,王绍明.2010a.云南省马厂箐Cu-Mo-Au矿床花岗斑岩成矿地质证据[J].矿床地质,29(5):890-902.
郭晓东,王治华,王欣,陈祥,王绍明,覃文明.2010b.马厂箐斑岩型铜钼金多金属矿床构造控岩控矿作用[J].大地构造与成矿学,34(1):55-62.
郭晓东,牛翠礻韦,王治华,王淑贤,王梁.2011a.滇西马厂箐岩体及其中深源包体地球化学特征[J].吉林大学学报,41(增1):141-153.
郭晓东,王治华,王梁,杨玉霞,陈晓吾.2011b.云南马厂箐岩体(似)斑状花岗岩锆石LA-ICP-MS U-Pb年龄及地质意义[J].中国地质,38(3):610-622.
郭晓东,王治华,王梁,阎家盼,杨玉霞,陈晓吾.2011c.云南马厂箐斑岩型铜-钼-金矿集区成岩成矿时代探讨[J].地质论评,57(5):659-669.
何明勤,杨世瑜,刘家军.2003.云南祥云金厂箐金-铜矿床中的有机质及其金成矿的关系[J].昆明理工大学学报(理工版),28(1):4-7.
何明勤,杨世瑜,陈昌勇.2004.滇西小龙潭-马厂箐地区铜金多金属矿床地质地球化学及成因研究[M].北京:地质出版社.
胡瑞忠,毕献武,Turner G,Burnard P G.1997.马厂箐铜矿床黄铁矿流体包裹体He-Ar同位素体系[J].中国科学(D辑),27(6):503-508.
梁华英,谢应雯,张玉泉.2004.富钾碱性岩体形成演化对铜矿成矿制约--以马厂箐铜矿为例[J].自然科学进展,14(1):116-120.
刘显凡,刘家铎,张成江,阳正熙,吴德超,李佑国.2004.滇西富碱斑岩型矿床岩体和矿脉同位素地球化学研究[J].矿物岩石地球化学通报,23(1):32-39.
罗照华,卢欣祥,陈必河,李明立,梁涛,黄凡,杨宗锋.2009.透岩浆流体成矿作用导论[M].北京:地质出版社.2-3.
吕伯西,王增,张能德,段建中,高子英,沈敢富,潘长云,姚鹏.1993.三江地区花岗岩类及其成矿专属性[M].北京:地质出版社.
彭建堂,毕献武,胡瑞忠,吴开兴,桑海清.2005.滇西马厂箐斑岩铜(钼)矿床成岩成矿时限的厘定[J].矿物学报,25(1):69-74.
沈渭洲,黄耀生.1987.稳定同位素地质[M].北京:原子能出版社.
王登红,屈文俊,李志伟,应汉龙,陈毓川.2004.金沙江-红河成矿带斑岩铜钼矿的成矿集中期:Re-Os同位素定年[J].中国科学(D辑),34(4):345-349.
杨建琨,唐志国.1996.云南省新生代浅成侵入斑岩型金矿成矿特征及找矿预测[J].北京地质,3:27-31.
俞广钧.1988.马厂箐金矿床成矿地质条件及其成因探讨[J].昆明工学院学报,13(1):1-10.
曾普胜,莫宣学,喻学惠.2002.滇西富碱斑岩带的Nd、Sr、Pb同位素特征及其挤压走滑背景[J].岩石矿物学杂志,21(3):231-241.
曾普胜,侯增谦,高永峰,杜安道.2006.印度-亚洲碰撞带东段喜马拉雅期铜-钼-金矿床Re-Os年龄及成矿作用[J].地质论评,52(1):72-84.
翟裕生.1999.论成矿系统[J].地学前缘,6(1):13-28.
翟裕生,邓军,崔彬.1999.成矿系统和综合地质异常[J].现代地质,13(1):99-104.
张理刚.1985.稳定同位素在地质科学中的应用:金属活化热液成矿作用及找矿[M].西安:陕西科学技术出版社.
张玉泉,谢应雯,涂光炽.1987.哀牢山-金沙江富碱侵入岩及其裂谷构造关系初步研究[J].岩石学报,1:17-25.
张玉泉,谢应雯,梁华英,邱华宁,李献华,钟孙霖.1998.藏东玉龙铜矿带含矿斑岩及成岩系列[J].地球化学,27(3):236-243.
朱训,袁崇轲,芮宗瑶,周跃华,朱贤甲,胡宗声,梅占魁.1983.德兴斑岩铜矿[M].北京:地质出版社.227-233.
Nitoi E,Munteanu Mand Marince S.2002.Magma enclave interactionsin the East Carpathian subvolcanic zone,Romania:Petrogenetici mpli-cations[J].Volcanology and Geothermal Research,118(1-2):229-259.
Perugini D,Poli G,Christofides G and Eleftheriadis G.2003.Magmamixinginthe Sithonia plutonic complex,Greece:Evidencefrom maf-ic microgranular enclaves[J].Mineralogy ang Petrology,78(3-4):173-200.
Poli Gand Tonunasini S.1999.Geochemical modeling of acid basic mag-mainteraction in the Sardinia Corsica Batholith:The case study ofSarrabus,southeastern Sardinia,Italy[J].Lithos,46(3):553-571.
Zartman R E and Doe B R.1981.Plumbotectonics-the model[J].Tectonophysics,75:135-162.
Zorpi MJ.1989.Magma mingling,zoning and emplacement in calcalka-line granitoid pluton[J].Tectonophysics,157:315.
毕献武,胡瑞忠,彭建堂,吴开兴,苏文超,战志新.2005.姚安和马厂箐富碱侵入岩体的地球化学特征[J].岩石学报,21(1):113-124.
邓晋福,罗照华,苏尚国,莫宣学,于炳松,赖兴运,谌宏伟.2004.岩石成因、构造环境与成矿作用[M].北京:地质出版社.
郭晓东,王治华,屈文俊.2008.云南省马厂箐斑岩型铜、钼矿辉钼矿Re-Os年龄及其地质意义[A].2008年第九届全国矿床会议论文集.453-454.
郭晓东,侯增谦,陈祥,王治华.2009a.云南马厂箐富碱斑岩埃达克岩性质的厘定及其成矿意义[J].岩石矿物学杂志,28(4):375-386.
郭晓东,王治华,陈祥,王欣,王淑贤.2009b.云南马厂箐斑岩型铜钼(金)矿床:地质特征与矿床成因[J].地质学报,83(12):1901-1914.
郭晓东,王治华,王欣,刘烊,周晓峰,王绍明.2010a.云南省马厂箐Cu-Mo-Au矿床花岗斑岩成矿地质证据[J].矿床地质,29(5):890-902.
郭晓东,王治华,王欣,陈祥,王绍明,覃文明.2010b.马厂箐斑岩型铜钼金多金属矿床构造控岩控矿作用[J].大地构造与成矿学,34(1):55-62.
郭晓东,牛翠礻韦,王治华,王淑贤,王梁.2011a.滇西马厂箐岩体及其中深源包体地球化学特征[J].吉林大学学报,41(增1):141-153.
郭晓东,王治华,王梁,杨玉霞,陈晓吾.2011b.云南马厂箐岩体(似)斑状花岗岩锆石LA-ICP-MS U-Pb年龄及地质意义[J].中国地质,38(3):610-622.
郭晓东,王治华,王梁,阎家盼,杨玉霞,陈晓吾.2011c.云南马厂箐斑岩型铜-钼-金矿集区成岩成矿时代探讨[J].地质论评,57(5):659-669.
何明勤,杨世瑜,刘家军.2003.云南祥云金厂箐金-铜矿床中的有机质及其金成矿的关系[J].昆明理工大学学报(理工版),28(1):4-7.
何明勤,杨世瑜,陈昌勇.2004.滇西小龙潭-马厂箐地区铜金多金属矿床地质地球化学及成因研究[M].北京:地质出版社.
胡瑞忠,毕献武,Turner G,Burnard P G.1997.马厂箐铜矿床黄铁矿流体包裹体He-Ar同位素体系[J].中国科学(D辑),27(6):503-508.
梁华英,谢应雯,张玉泉.2004.富钾碱性岩体形成演化对铜矿成矿制约--以马厂箐铜矿为例[J].自然科学进展,14(1):116-120.
刘显凡,刘家铎,张成江,阳正熙,吴德超,李佑国.2004.滇西富碱斑岩型矿床岩体和矿脉同位素地球化学研究[J].矿物岩石地球化学通报,23(1):32-39.
罗照华,卢欣祥,陈必河,李明立,梁涛,黄凡,杨宗锋.2009.透岩浆流体成矿作用导论[M].北京:地质出版社.2-3.
吕伯西,王增,张能德,段建中,高子英,沈敢富,潘长云,姚鹏.1993.三江地区花岗岩类及其成矿专属性[M].北京:地质出版社.
彭建堂,毕献武,胡瑞忠,吴开兴,桑海清.2005.滇西马厂箐斑岩铜(钼)矿床成岩成矿时限的厘定[J].矿物学报,25(1):69-74.
沈渭洲,黄耀生.1987.稳定同位素地质[M].北京:原子能出版社.
王登红,屈文俊,李志伟,应汉龙,陈毓川.2004.金沙江-红河成矿带斑岩铜钼矿的成矿集中期:Re-Os同位素定年[J].中国科学(D辑),34(4):345-349.
杨建琨,唐志国.1996.云南省新生代浅成侵入斑岩型金矿成矿特征及找矿预测[J].北京地质,3:27-31.
俞广钧.1988.马厂箐金矿床成矿地质条件及其成因探讨[J].昆明工学院学报,13(1):1-10.
曾普胜,莫宣学,喻学惠.2002.滇西富碱斑岩带的Nd、Sr、Pb同位素特征及其挤压走滑背景[J].岩石矿物学杂志,21(3):231-241.
曾普胜,侯增谦,高永峰,杜安道.2006.印度-亚洲碰撞带东段喜马拉雅期铜-钼-金矿床Re-Os年龄及成矿作用[J].地质论评,52(1):72-84.
翟裕生.1999.论成矿系统[J].地学前缘,6(1):13-28.
翟裕生,邓军,崔彬.1999.成矿系统和综合地质异常[J].现代地质,13(1):99-104.
张理刚.1985.稳定同位素在地质科学中的应用:金属活化热液成矿作用及找矿[M].西安:陕西科学技术出版社.
张玉泉,谢应雯,涂光炽.1987.哀牢山-金沙江富碱侵入岩及其裂谷构造关系初步研究[J].岩石学报,1:17-25.
张玉泉,谢应雯,梁华英,邱华宁,李献华,钟孙霖.1998.藏东玉龙铜矿带含矿斑岩及成岩系列[J].地球化学,27(3):236-243.
朱训,袁崇轲,芮宗瑶,周跃华,朱贤甲,胡宗声,梅占魁.1983.德兴斑岩铜矿[M].北京:地质出版社.227-233.
Nitoi E,Munteanu Mand Marince S.2002.Magma enclave interactionsin the East Carpathian subvolcanic zone,Romania:Petrogenetici mpli-cations[J].Volcanology and Geothermal Research,118(1-2):229-259.
Perugini D,Poli G,Christofides G and Eleftheriadis G.2003.Magmamixinginthe Sithonia plutonic complex,Greece:Evidencefrom maf-ic microgranular enclaves[J].Mineralogy ang Petrology,78(3-4):173-200.
Poli Gand Tonunasini S.1999.Geochemical modeling of acid basic mag-mainteraction in the Sardinia Corsica Batholith:The case study ofSarrabus,southeastern Sardinia,Italy[J].Lithos,46(3):553-571.
Zartman R E and Doe B R.1981.Plumbotectonics-the model[J].Tectonophysics,75:135-162.
Zorpi MJ.1989.Magma mingling,zoning and emplacement in calcalka-line granitoid pluton[J].Tectonophysics,157:315.
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