个旧卡房矿田锡-铜矿床伴生金(银)矿赋存状态及其富集规律  

Occurrence of the Au(Ag) deposit associated with the Sn-Cu deposit in the Kafang ore field and its enriching rules in Gejiu

作　　者：李国清 张学书 

机构地区：[1]云南省有色地质局三O八队,云南个旧661000 [2]云南省有色地质局,昆明650051

出　　处：《矿产与地质》2008年第4期289-292,305,共5页Mineral Resources and Geology

基　　金：云南省国际合作项目(2002GH11);云南省自然科学基金项目(2003D0008Q)资金资助

摘　　要：云南个旧锡多金属矿区卡房矿田伴生金矿主要赋存于中三叠统个旧组卡房段地层的中上部，矿化受花岗岩侵入的热液活动、变玄武岩及NE向和EW向褶皱、断裂构造控制。伴生金矿床可分为含金（银）多金属矽卡岩硫化锡铜矿床及含金脉（层）状锡铅矿床。金主要呈银金矿、自然金等独立矿物出现，主要载金矿物有自然铋、毒砂、辉钼矿等，其中以自然铋含金量最高。金矿化在变玄武岩底界之下6～20m处矿化最强，最富集。The associated gold deposit in the Kafang ore field of the Gejiu Sn polymetallic ore area in Yunnan mainly occurred in middle and upper parts of the strata of the Kafang Section in the Gejiu Formation of Middle Triassic Series. The mineralization is controlled by intrusive hydrothermal movements of granites, variational basalts and NE with EW trending fold and fault structure. The associated gold mineralization can be classified into two types. Au （Ag）-bearing polymetallic skarn sulphide Sn-Cu deposit and Au-bearing vein （layer） type Sn-Pb deposit. Gold mainly occurred in independent minerals, such as electrum and native gold etc. , while other major Au-loading minerals contain native Bi, arsenopyrite and molybdenite etc. , of which the native Bi has the highest Au content. The strongest and richest Au mineralization is at 6-20m section under the bottom boundary of the variational basalts.

关 键 词：锡铜矿床 伴生金矿化 自然铋 卡房矿田 个旧 

分 类 号：P618.4[天文地球—矿床学]