雄村铜金矿是冈底斯成矿带上新发现的岛弧型斑岩铜金矿床,矿床由3个矿体组成,Ⅱ号矿体位于Ⅰ号矿体北西侧3km处.Ⅱ号矿体中铜、金、银矿化主要分布在早期钾-硅酸盐化带以及绢云母白云母-石英硫化物带中,早期钾-硅酸盐化的典型矿物组合为黑云母+磁铁矿±钾长石+黄铜矿+黄铁矿,热液磁铁矿含量较高.元素空间分布特征以及相关性分析表明,Cu和Au、Ag呈显著正相关,黄铜矿是Au和Ag的主要载体,分布在矿体中心.Cu与K、Rb呈正相关,而与Na呈负相关的特点表明矿化与钾质交代关系密切,晚期矿化以分布在外围的细脉状、脉状方铅矿和闪锌矿化为主.由矿体中心向外,与矿化有关的16种元素构成Cu、Au、Ag、K、Rb、Ba-Mo-Co、Ni-Pb、Zn、Mn、Ag、Sb-Na元素分带,元素带状分布特征与蚀变矿化分带吻合.分布在外围的Na同时受钾质交代过程中Na元素向外迁移作用以及早期深部高温环境下的钠质-钙质蚀变共同控制.元素空间分带特征与蚀变与矿化分带机理类似,受热液流体演化、运移、温压条件和原岩组分等综合因素控制,分带特征对今后的找矿与勘探工作具有一定的指示意义.%The Xiongcun copper-gold deposit is an island arc porphyry copper-gold deposit newly discovered in the Gangdise metallogenic belt. It consists of three ore bodies. No. Ⅱ ore body is located 3 km northwest of No. I ore body. Cu, Au, and Ag mineralizations occur in early K-silicate alteration zone and sericite-muscovite-quartz-sulphide zone. Early K-silicate alteration is characterized by biotite + magnetite ± K-feldspar + chalcopy-rite+ pyrite, and is rich in magnetite. Element distribution characteristics and correlation analysis show that Cu is well correlated to Au and Ag. Au- and Ag-bearing chalcopyrite is mainly distributed at the center of the ore deposit. Cu is positively related to K, Rb and negatively related to Na, suggesting that the mineralization is mainly related to early K-silicate alteration. Later mineralization occurs around the ore body mainly as sphalerite and galena veins. From the center to the outer part, sixteen elements related to Cu, Au and Ag are zoned around the center, i.e., Cu, Au, Ag, K, Rb, Ba-Mo-Co, Ni-Pb, Zn, Mn, Ag, Sb-Na. The element distribution is similar to zoned alteration. They are controlled by such factors as hydrothermal fluid, translation condition, p-T and primary composition of the host rock. The zoned element characteristics and assemblies are of guiding significance for future exploration.
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