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滇东南喷流沉积块状硫化物特征与矿床成因
引用本文:周建平,徐克勤.滇东南喷流沉积块状硫化物特征与矿床成因[J].矿物学报,1998,18(2):158-168,T002.
作者姓名:周建平  徐克勤
作者单位:南京大学成矿作用研究国家重点实验室!南京,210093,南京大学成矿作用研究国家重点实验室!南京,210093,南京大学成矿作用研究国家重点实验室!南京,210093,南京大学成矿作用研究国家重点实验室!南京,210093,南京大学成矿作用研究国家重点实验室!南京,210093
基金项目:国家教委回国留学人员基金,有色金属总公司科研基金
摘    要:滇东南一些著名的大型-超大型锡多金属矿床,如个旧锡矿和都龙锡矿,白牛厂大型银,锡多金属矿床下部均有燕山期花岗岩发育,因此,个旧和都龙锡多金属矿床大多数人认为是岩浆热液矿床。笔者对上述三个矿床的矿石矿物组构、成分以及它们的共生组合关系进行了系统研究,发现了大量海底喷流沉积结构构造,值得一提的是在岩体接触带附近的块状硫化物矿体中发现了缅状结构和丝状客形虫等证据,而这些矿体曾被认为是典型的岩浆热液成因,

关 键 词:    多金属矿床  喷流沉积  硫化物矿  矿床成因

CHARACTERISTICS AND GENESIS OF EXHALATIVE SEDIMENTARY MASSIVE SULFIDES IN SOUTHEASTERN YUNNAN PROVINCE
Zhou Jianping ,Xu Keqin ,Hua Renmin, Zhao Yiying, Zhu Jinchu.CHARACTERISTICS AND GENESIS OF EXHALATIVE SEDIMENTARY MASSIVE SULFIDES IN SOUTHEASTERN YUNNAN PROVINCE[J].Acta Mineralogica Sinica,1998,18(2):158-168,T002.
Authors:Zhou Jianping  Xu Keqin  Hua Renmin  Zhao Yiying  Zhu Jinchu
Abstract:Many geologists considered the Gejiu and Dulong tin polymetallic deposits in southeast-ern Yunnan Province as magmatic hydrothermal deposits due to the fact that there are granitebatholiths below the ore bodies. The Bainiuchang, a newly found Ag, Sn polymetallic deposit inMengzi,is however thought to be an exhalative sedimentary deposit although a deep-seated granitebatholith also exists in this area. A systematic study on the texture,composition and parageneisisof ore minerals reveals that the Sn,Ag poly-metal sulfides in the main ore layers of these ore de-posits are actually of submarine exhalative sedimentation. Typical sedimentary textures are foutidin the ores in the contact zone,such as o6litic and spherical colloidal pyrite. In addition,a filamen-tous(tube worm)texture is also found in some localities,which is comparable to that occurring inactive vents on the modern ocean floor. Some new ideas on the genesis of the three large Sn,Agpolymetallic deposits in southeastern Yunnan are given in this paper,based on the textures and fea-tures of massive sulfides.
Keywords:Sn  Ag polymetallic ore deposits  southeastern Yunnan  exhalative sedimentary massive sulfide  genesis of ore deposits
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