滇西南澜沧江带红豆山铜矿床蚀变分带及其找矿意义
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摘要
红豆山铜矿床是南澜沧江带新发现的矿床之一。通过野外地质工作和系统构造—|蚀变岩相填图,发现该矿床蚀变类型主要以钾长石化、硅化、绿泥石化、绿帘石化为主,其次为碳酸盐化、绢云母化、黄铁矿化等,且在空间上呈现一定规律,各蚀变带具有明显的叠加现象。依据区内岩石蚀变矿物组合等特点,自断裂带→上盘围岩,共出现4个典型蚀变带,依次为碎裂岩化带→长英岩化—碳酸盐化—绢云母化带→硅化—绿泥石化—绿帘石化带→弱长英岩化安山岩带。矿(化)体主要分布在长英岩化、碳酸盐化、绢云母化带和硅化、绿泥石化、绿帘石化带。由斑岩脉中心至边缘发育钾化带→硅化带→青磐岩化带→绢云母化带,斑岩旁侧围岩中发育放射状石英—方解石—黄铜矿脉。
The Hongdoushan copper deposit is one of the newly discovered in the southern Lancangjiang belt. The alteration characteristics and zoning of the deposit have been studied through field geological work and systematic structural alteration lithofacies mapping. The main altered types for Hongdoushan deposit are as follows: potassic feldspathization, silicification, chloritization, epidotization, and secondary carbonation,sericitization and limonitization. Surrounding rock alteration in the mining area shows a certain regularity in space,and the alteration zones have obvious superposition phenomenon.According to the characteristics of altered rocks in the area,from the fault zone to the hanging wall rock,there are four obvious alteration zones,which are Cataclastic rock zone,felsic lithification-carbonatesericite zone,silicification-chlorite-epidote zone and weakly felsic lithification andesite zone. The ore-bodies are located mainly in the felsic lithification,carbonate-sericite zone and silicification-chloriteepidote zone. The concentric alteration zones from the inner outward of the porphyry veins are successively potassic zone,silicide zone,propylitic zone,sericite zone. Radial quartz-calcite-chalcopyrite veins are developed in the surrounding rocks beside the porphyry.
The Hongdoushan copper deposit is one of the newly discovered in the southern Lancangjiang belt. The alteration characteristics and zoning of the deposit have been studied through field geological work and systematic structural alteration lithofacies mapping. The main altered types for Hongdoushan deposit are as follows: potassic feldspathization, silicification, chloritization, epidotization, and secondary carbonation,sericitization and limonitization. Surrounding rock alteration in the mining area shows a certain regularity in space,and the alteration zones have obvious superposition phenomenon.According to the characteristics of altered rocks in the area,from the fault zone to the hanging wall rock,there are four obvious alteration zones,which are Cataclastic rock zone,felsic lithification-carbonatesericite zone,silicification-chlorite-epidote zone and weakly felsic lithification andesite zone. The ore-bodies are located mainly in the felsic lithification,carbonate-sericite zone and silicification-chloriteepidote zone. The concentric alteration zones from the inner outward of the porphyry veins are successively potassic zone,silicide zone,propylitic zone,sericite zone. Radial quartz-calcite-chalcopyrite veins are developed in the surrounding rocks beside the porphyry.
引文
[1]莫宣学,沈上越,朱勤文,等.三江中南段火山岩-蛇绿岩与成矿[M].北京:地质出版社,1998.MO Xuanxue,SHEN Shangyue,ZHU Qingwen,et al.Volcanics-ophiolite and mineralization of middle-southern part in Sanjiang area of southwestern China[M].Beijing:Geological Publishing House,1998.(in Chinese)
[2]李兴振,刘文均,王义昭,等.西南三江地区特提斯构造演化与成矿[M].北京:地质出版社,1999,122-145.LI Xingzhen,LIU Wenjun,WANG Yizhao,et al.The tectonic evolution and metallogenesis in the Tethys of the Nujiang Lancangjiang-Jinshajiang area,Southwestern China[M].Beijing:Geological Publishing House,1999,122-145.(in Chinese)
[3]李定谋,王立全,须同瑞,等.金沙江构造带铜金矿成矿与找矿[M].北京:地质出版社,2002.LI Dingmou,WANG Liquan,XU Tongrui,et al.Mineralization and exploration of the copper and gold deposits along the Jinshajiang structural zone,Southwestern China[M].Beijing:Geological Publishing House,2002.(in Chinese)
[4]陈莉,王立全,王保弟,等.滇西云县-景谷火山弧带官房铜矿床成因:流体包裹体及年代学证据[J].岩石学报,2013,29(4):1279-1289.CHEN Li,WANG Liquan,WANG Baodi,et al.Genesis of the Guanfang copper deposit in the Yunxian-Jinggu volcanic arc,western Yunnan:Evidences from fluid inclusions and geochronology[J].Acta Petrologica Sinica,2013,29(4):1279-1289.(in Chinese with English abstract)
[5]张彩华.澜沧江火山弧云县段铜矿床地质特征、成矿模式与找矿预测[D].长沙:中南大学,2007,1-134.ZHANG Caihua.Geological characteristics and metallogenic model and prospecting prediction of copper deposits in Yunxian section of Lancangjiang volcanic arc,Yunnan province,China[D].Changsha:Central South University,2007,1-134.(in Chinese with English abstract)
[6]段继云,李石英,杨文军.云县邦东-景谷民乐地区火山岩型铜矿找矿前景[J].云南地质,2010,29(2):128-131.DUAN Jiyun,LI Shiying,YANG Wenjun.The ore prospecting potentiality of volcanic type Cu deposit in Bangdong of Yunxianminle of Jinggu area[J].Yunnan Geology,2010,29(2):128-131.(in Chinese with English abstract)
[7]田宗春,李宏坤,杨世坤,等.思茅民乐宋家坡铜矿地质及找矿标志[J].云南地质,2006,25(1):31-39.TIAN Zongchun,LI Hongkun,YANG Shikun,et al.Geology and ore prospecting marks of Songjiapo Cu deposit in Minle,Simao[J].Yunnan Geology,2006,25(1):31-39.(in Chinese with English abstract)
[8]王磊,王加昇,王雷,等.滇西南澜沧江带红豆山铜矿花岗斑岩地质地球化学特征及成岩时代[J].地质通报,2017,36(7):1231-1241.WANG Lei,WANG Jiasheng,WANG Lei,et al.Geological and geochemical characteristics and age of granite porphyry in the Hongdoushan copper deposit,South Langcangjiang belt,western Yunnan Province[J].Geological Bulletin of China,2017,36(7):1231-1241.(in Chinese with English abstract)
[9]郭泽华,王雷,韩润生,等.滇西云县红豆山铜矿构造地球化学特征及找矿预测[J].中国地质,2019,46(1):178-190.GUO Zehua,WANG Lei,HAN Runsheng,et al.Tectonic geochemical characteristics and ore prediction in Hongdoushan copper deposit,Yunxian area,Western Yunnan[J].Geology in China,2019,46(1):178-190.(in Chinese with English abstract)
[10]王国芝,胡瑞忠,方维萱,等.澜沧江断裂带走滑变形及与临沧锗矿的关系[J].矿物学报,2001,21(4):695-698.WANG Guozhi,HU Ruizhong,FANG Weixuan,et al.Strikeslip deformation in lancang River fault zone and relationship with Ge ore deposit in Linchang,Yunnan[J].Acta Mineralogica Sinica,2001,21(4):695-698.(in Chinese with English abstract)
[11]池三川.现代成矿理论的某些进展[J].地学前缘,1994,1(3-4):83-89.CHI Sanchuan.New theories and advances of contem-porary metallogenesis[J].Earth Science Frontiers,1994,1(3-4):83-89.(in Chinese with English abstract)
[12]祝向平,陈华安,马东方,等.西藏多不杂斑岩铜金矿床地质与蚀变[J].地质与勘探,2012,48(2):199-206.ZHU Xiangping,CHEN Huaan,MA Dongfang,et al.Geology and alteration of the Duobuza porphyry copper-gold deposit in Tibet[J].Geology and Exploration,2012,48(2):199-206.(in Chinese with English abstract)
[13]阎浩,黄费新,孙赫,等.内蒙古迪彦钦阿木钼矿区热液矿化蚀变分带建模-基于Surpac软件[J].地质与勘探,2012,48(5):932-939.YAN Hao,HUANG Feixin,SUN He,et al.A model for alteration zoning of hydrothermal mineralization based on Surpae software for the Diyanqinamu Mo Mine District,Inner Mongolia[J].Geology and Exploration,2012,48(5):932-939.(in Chinese with English abstract)
[14]于淼,丰成友,保广英,等.青海尕林格铁矿床矽卡岩矿物学及蚀变分带[J].矿床地质,2013,32(1):55-76.YU Miao,FENG Chengyou,BAO Guangying,et al.Characteristics and zonation of skarn minerals in Galinge iron deposit,Qinghai Province[J].Mineral Deposits,2013,32(1):55-76.(in Chinese with English abstract)
[15]金小燕,雷泽恒,曹志军,等.湖南汝城高坳背钨钼矿地质特征及地质意义[J].地质与勘探,2013,49(3):453-457.JIN Xiaoyan,LEI Zeheng,CAO Zhijun,et al.Geological characteristics and significance of the Gaoaobei tungstenmolybdenum deposit,in Rucheng,Hunan[J].Geology and Exploration,2013,49(3):453-457.(in Chinese with English abstract)
[2]李兴振,刘文均,王义昭,等.西南三江地区特提斯构造演化与成矿[M].北京:地质出版社,1999,122-145.LI Xingzhen,LIU Wenjun,WANG Yizhao,et al.The tectonic evolution and metallogenesis in the Tethys of the Nujiang Lancangjiang-Jinshajiang area,Southwestern China[M].Beijing:Geological Publishing House,1999,122-145.(in Chinese)
[3]李定谋,王立全,须同瑞,等.金沙江构造带铜金矿成矿与找矿[M].北京:地质出版社,2002.LI Dingmou,WANG Liquan,XU Tongrui,et al.Mineralization and exploration of the copper and gold deposits along the Jinshajiang structural zone,Southwestern China[M].Beijing:Geological Publishing House,2002.(in Chinese)
[4]陈莉,王立全,王保弟,等.滇西云县-景谷火山弧带官房铜矿床成因:流体包裹体及年代学证据[J].岩石学报,2013,29(4):1279-1289.CHEN Li,WANG Liquan,WANG Baodi,et al.Genesis of the Guanfang copper deposit in the Yunxian-Jinggu volcanic arc,western Yunnan:Evidences from fluid inclusions and geochronology[J].Acta Petrologica Sinica,2013,29(4):1279-1289.(in Chinese with English abstract)
[5]张彩华.澜沧江火山弧云县段铜矿床地质特征、成矿模式与找矿预测[D].长沙:中南大学,2007,1-134.ZHANG Caihua.Geological characteristics and metallogenic model and prospecting prediction of copper deposits in Yunxian section of Lancangjiang volcanic arc,Yunnan province,China[D].Changsha:Central South University,2007,1-134.(in Chinese with English abstract)
[6]段继云,李石英,杨文军.云县邦东-景谷民乐地区火山岩型铜矿找矿前景[J].云南地质,2010,29(2):128-131.DUAN Jiyun,LI Shiying,YANG Wenjun.The ore prospecting potentiality of volcanic type Cu deposit in Bangdong of Yunxianminle of Jinggu area[J].Yunnan Geology,2010,29(2):128-131.(in Chinese with English abstract)
[7]田宗春,李宏坤,杨世坤,等.思茅民乐宋家坡铜矿地质及找矿标志[J].云南地质,2006,25(1):31-39.TIAN Zongchun,LI Hongkun,YANG Shikun,et al.Geology and ore prospecting marks of Songjiapo Cu deposit in Minle,Simao[J].Yunnan Geology,2006,25(1):31-39.(in Chinese with English abstract)
[8]王磊,王加昇,王雷,等.滇西南澜沧江带红豆山铜矿花岗斑岩地质地球化学特征及成岩时代[J].地质通报,2017,36(7):1231-1241.WANG Lei,WANG Jiasheng,WANG Lei,et al.Geological and geochemical characteristics and age of granite porphyry in the Hongdoushan copper deposit,South Langcangjiang belt,western Yunnan Province[J].Geological Bulletin of China,2017,36(7):1231-1241.(in Chinese with English abstract)
[9]郭泽华,王雷,韩润生,等.滇西云县红豆山铜矿构造地球化学特征及找矿预测[J].中国地质,2019,46(1):178-190.GUO Zehua,WANG Lei,HAN Runsheng,et al.Tectonic geochemical characteristics and ore prediction in Hongdoushan copper deposit,Yunxian area,Western Yunnan[J].Geology in China,2019,46(1):178-190.(in Chinese with English abstract)
[10]王国芝,胡瑞忠,方维萱,等.澜沧江断裂带走滑变形及与临沧锗矿的关系[J].矿物学报,2001,21(4):695-698.WANG Guozhi,HU Ruizhong,FANG Weixuan,et al.Strikeslip deformation in lancang River fault zone and relationship with Ge ore deposit in Linchang,Yunnan[J].Acta Mineralogica Sinica,2001,21(4):695-698.(in Chinese with English abstract)
[11]池三川.现代成矿理论的某些进展[J].地学前缘,1994,1(3-4):83-89.CHI Sanchuan.New theories and advances of contem-porary metallogenesis[J].Earth Science Frontiers,1994,1(3-4):83-89.(in Chinese with English abstract)
[12]祝向平,陈华安,马东方,等.西藏多不杂斑岩铜金矿床地质与蚀变[J].地质与勘探,2012,48(2):199-206.ZHU Xiangping,CHEN Huaan,MA Dongfang,et al.Geology and alteration of the Duobuza porphyry copper-gold deposit in Tibet[J].Geology and Exploration,2012,48(2):199-206.(in Chinese with English abstract)
[13]阎浩,黄费新,孙赫,等.内蒙古迪彦钦阿木钼矿区热液矿化蚀变分带建模-基于Surpac软件[J].地质与勘探,2012,48(5):932-939.YAN Hao,HUANG Feixin,SUN He,et al.A model for alteration zoning of hydrothermal mineralization based on Surpae software for the Diyanqinamu Mo Mine District,Inner Mongolia[J].Geology and Exploration,2012,48(5):932-939.(in Chinese with English abstract)
[14]于淼,丰成友,保广英,等.青海尕林格铁矿床矽卡岩矿物学及蚀变分带[J].矿床地质,2013,32(1):55-76.YU Miao,FENG Chengyou,BAO Guangying,et al.Characteristics and zonation of skarn minerals in Galinge iron deposit,Qinghai Province[J].Mineral Deposits,2013,32(1):55-76.(in Chinese with English abstract)
[15]金小燕,雷泽恒,曹志军,等.湖南汝城高坳背钨钼矿地质特征及地质意义[J].地质与勘探,2013,49(3):453-457.JIN Xiaoyan,LEI Zeheng,CAO Zhijun,et al.Geological characteristics and significance of the Gaoaobei tungstenmolybdenum deposit,in Rucheng,Hunan[J].Geology and Exploration,2013,49(3):453-457.(in Chinese with English abstract)