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地球学报  2004 

滇黔交界地区峨眉山玄武岩铜矿化蚀变特征

Keywords: 自然铜,沥青,炭质物,峨眉山玄武岩,成矿作用,滇黔交界地区

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Abstract:

滇黔交界地区蛾眉山玄武岩铜矿化具层控特征,主要发育于上二叠统蛾眉山玄武岩组第四岩性段下部。矿化主岩为玄武岩流顶部的淬碎玄武质角砾岩和玄武岩流之间的含炭沉积岩;矿石矿物主要为自然铜及其表生氧化产物黑铜矿、赤铜矿、孔雀石等;脉石矿物主要有沥青、炭质物、石英、沸石、方解石、绿帘石等,此外还有少量绿泥石、钠长石、铁阳起石、榍石、辉铜矿、硅孔雀石、铜蓝、褐铁矿等。以玄武岩为主岩的铜矿石典型矿物组合为自然铜沥青石英及不含沥青等有机质的自然铜石英绿帘石,以含炭沉积岩为主岩的铜矿石典型矿物组合为自然铜炭质物沸石石英(辉铜矿);原生铜矿化有2个期次:早期铜矿化发生于有机质流体贯人之前,晚期铜矿化发生于有机质流体贯人之后。该类铜矿化的同生火山热液特征不明显,以后生热液矿化为主。淬碎玄武质角砾岩不仅是有机流体的良好储层,也为成矿流体提供了就位空间,是铜矿化层控特征的主要控制因素。有机流体及含碳沉积岩中碳质为成矿物质以自然铜形式沉淀提供了还原条件。

References

[1]  Zhu Bingquan;ChangXiangyang;Hu Yaoguo.Discovery of Yanhe copper deposit in the Yunnan-Guizhou border area and a new train of thought for copper prospecting in the large igneous province of Emeishan flood basalts[J].Advances in Earth Science,2002(06)
[2]  Davis D W;PacesJB,Time resolution of geologic events on the Keweenaw Peninsula and implications for development of the Midcontinent Rift system,Earth and Planetary Sciences Letters,1990.
[3]  毛景文;王志良;李厚民.云南鲁甸地区二叠纪玄武岩中铜矿床的碳氧同位素对成矿过程的指示[J].地质论评,2003(06)
[4]  徐义刚;钟孙霖.峨眉山大火成岩省地幔柱活动的证据及其熔融条件[J].地球化学,2001(01)
[5]  王登红.地幔柱的概念、分类、演化与大规模成矿--对中国西南部的探讨[J].地学前缘,2001(03)
[6]  Xu Yigang;ChungSunlin.The Emeishan large igneous province:evidence for mantle plume activity and melting conditions[J].Geochimica,2001(01)
[7]  Xiao Long;XuYigang;Mei Houjun.Geochemistry of Emeishan flood basalts at Binchuan area, SW China: rock types and temporal evolution[J].Chinese Journal of Geology,2003(04)
[8]  Theodore J Bornhorst;JamesBPaces;Norman K Grant,Age of native copper mineralization,Keweenaw Peninsula,Michigan,Economic Geology,1988.
[9]  Song Xieyan;HouZengqian;Wang Yunliang.The mantle plume features of Emeishan basalts[J].Journal of Mineral Petrology(in Chinese),2002(04)
[10]  Sichuan Geological,Encyclopedia of the geology of Sichuan province,北京:地质出版社,1989.
[11]  Norman K Grant;JohnDObradovich;Huber N King,Age of native copper mineralization,Keweenaw Peninsula,Michigan,Economic Geology,1988.
[12]  Mao Jingwen;WangZhiliang;Li Houmin.Carbon and oxygen isotope components in the Permian basalt-hosted copper deposit in Ludian area, Yunnan: Implication for the mineralization process[J].Geological Review,2003(06)
[13]  Hou Zengqian;MoXuanxue;Zhu Qinwen,Mantle plume in the Sanjiang paleo-Tethyan lithosphere: Evidence from mid-ocean ridge basalts,Acta Geoscientia Sinaca(in Chinese with English abstract),1996(04).
[14]  Eileen S Ho;PhilipAMeyers;Jeffrey L Mauk,Organic geochemical study of mineralization in the Keweenawan Nonesuch Formation at White Pine,Michigan,Advances in Organic Geochemistry,1990(1-3).
[15]  朱炳泉;胡耀国;张正伟.滇黔地球化学边界似基韦诺(Keweenaw)型铜矿床的发现[J].中国科学D辑,2002(z1)
[16]  Xu Yigang.Mantle plumes,large igneous provinces and their geologic consequences[J].Earth Science Frontiers,2002(04)
[17]  Yunnan Geological,Encyclopedia of the geology of Yunnan province,北京:地质出版社,1989.
[18]  Eileen S Ho;JeffreyLMauk,Relationship between organic matter and copper mineralization in the Proterozoic Nonesuch Formation,northern Michigan,Ore Geology Reviews,1996.
[19]  朱炳泉;常向阳;胡耀国.滇-黔边境鲁甸沿河铜矿床地发现与峨眉山大火成岩省找矿新思路[J].地球科学进展,2002(06)
[20]  云南省地质局,云南省地质志,北京:地质出版社,1989.
[21]  徐义刚.地幔柱构造、大火成岩省及其地质效应[J].地学前缘,2002(04)
[22]  肖龙;徐义刚;梅厚钧.南宾川地区峨眉山玄武岩地球化学特征:岩石类型及随时间演化规律[J].地质科学,2003(04)
[23]  宋谢炎;侯增谦;汪云亮.峨眉山玄武岩的地幔热柱成因[J].矿物岩石,2002(04)
[24]  ZHU Bingquan ;HU Yaoguo ;ZHANG Zhengwei ;CHANG Xiangyang,Discovery of the copper deposits with features of the Keweenawan type in the border area of Yunnan and Guizhou provinces,Science in China. Series D, Earth sciences?,2003, 46(s1).
[25]  Wang Denghong.Basic concept, classification, evolution of mantle plume and large scale mineralization-probe into southwestern China[J].Earth Science Frontiers,2001(03)
[26]  Stanley K Hamilton,Copper mineralization in the upper part of the Copper Harbor conglomerate at White Pine,Michigan,Economic Geology,1967(07).
[27]  侯增谦;莫宣学;朱勤文,三江"古特提斯地幔热柱-洋中脊玄武岩证据,地球学报,1996(04).

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