云南冬瓜林金矿床的围岩蚀变特征和成矿阶段划分
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摘要
冬瓜林金矿床位于云南省镇沅县境内,通过野外考察、镜下观察和前人资料分析,认为矿区的蚀变类型有绢云母化、碳酸盐化、黄铁矿化和硅化等;热液成矿活动分为4个主要阶段:①早期硅化阶段;②绢云母碳酸盐硫化物阶段;③多金属硫化物碳酸盐化阶段;④辉锑矿化硅化阶段。其中第②、③阶段为主要金成矿阶段。
The Donggualin gold deposit is located in Zhenyuan,Yunnan province.Based on the field investigation and microscopic observation,several alteration types of the wall rock are recognized,including sericitization,carbonatization,pyritization and silicification.The ore-forming hydrothermal process can be divided into four stages:①Silicification in the early stage;②Sericitization-carbonatization-sulfide stage;③Polymetallic sulfide-carbonatization stage;④Stibnite-silicification stage.The stages ② and ③are the major time for gold formation.
The Donggualin gold deposit is located in Zhenyuan,Yunnan province.Based on the field investigation and microscopic observation,several alteration types of the wall rock are recognized,including sericitization,carbonatization,pyritization and silicification.The ore-forming hydrothermal process can be divided into four stages:①Silicification in the early stage;②Sericitization-carbonatization-sulfide stage;③Polymetallic sulfide-carbonatization stage;④Stibnite-silicification stage.The stages ② and ③are the major time for gold formation.
引文
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[11]刘显凡,吴冉,肖继雄,等.云南老王寨金矿成因的地幔流体交代作用证据[J].矿床地质,2010,29(zk):975—976.
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[2]胡云中,唐尚鹑,王海平,等.哀牢山金矿地质[M].北京:地质出版社,1995,1-278.
[3]黄智龙,刘从强,朱成明,等.云南老王寨金矿区煌斑岩成因及其与金矿化的关系[M].北京:地质出版社,1999:1-252.
[4]梁业恒,孙晓明,石贵勇,等.云南哀牢山老王寨大型造山型金矿成矿流体地球化学[J].岩石学报,2011,27(9):2533-2540.
[5]ZHAO Yan,WANG Qing-fei,SUN Xiang,et al.Characteristics of Ore-Forming Fluid in the Zhenyuan Gold Orefield,Yunnan Province,China[J].Journal of Earth Science,2013,24(2).203-211.
[6]赵岩,黄钰涵,梁坤,等.西南三江地区镇沅金矿载金黄铁矿稀土与微量元素特征[J].岩石学报,2015,31(11):3297-3308.
[7]段新华,赵鸿.论哀牢山—藤条河断裂古板块俯冲带[J].地质学报,1981,57(4):258—266.
[8]吴海威,张连生,嵇少丞.红河—哀牢山断裂带喜山期陆内大型左行走滑剪切带[J].地质科学,1989,10(1):1-8.
[9]何文举.镇沅金矿田煌斑岩特征及其与金矿成矿的关系[J].云南地质,1993,12 C2):148-158.
[10]黄智龙.幔源岩浆活动过程中的去气作用—以云南老王寨金矿煌斑岩为例[J].矿物岩石地球化学通报,2001,20(1):1-5.
[11]刘显凡,吴冉,肖继雄,等.云南老王寨金矿成因的地幔流体交代作用证据[J].矿床地质,2010,29(zk):975—976.
[12]刘显凡,楚亚婷,卢秋霞,等.云南老王寨金矿的深部地质过程—来自显微岩相学和元素地球化学的证据[J].吉林大学学报:地球科学版,2012,42(4):1026—1038.
[13]李惠,张文华,常凤池,等.大型、特大型金矿盲矿预测的原生叠加晕模型[M].北京:冶金工业出版社,1998:1—125.
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