云南都龙锡锌多金属矿床三维空间矿化分带研究.

Yunnan Dulong Sn-Zn pofymetallic deposits has large reserves of major metals such as Sn and Zn，and the reserves of associated scattered elements such as In and Cd in the deposits are also considerable. Based on the three-dimensional spatial positioning of samples the cluster analysis and spatial zoning of 570 groups of main and trace elements analysis data formed by mining exploration were studied. Cluster analysis results show that Ag-Cu-As is clustered into one group，which is the low and medium temperature element association near the ore；Zn-Cd-S-In-Sn is clustered into group of pofymetallic sulphide ore elements，and Ga and Ge have poor correlation with other elements. Composite mapping of the zoning indices of Sn，Zn，Cd，Ga，Ge and In elements in the dip-vertical and strike-vertical directions was carried out. The results show that the Zn has a high composite zoning index in the ore body and above，and the Sn has a high composite zoning index in the ore body and below. The two-element mineralization has both the characteristics of layer distribution and the characteristics of vertical layering，which is supposed to be the result of superposition of multi-stage mineralization. The spatial enrichment law of Cd is consistent with that of Zn，it is speculated that Cd mainly occurs in the lattice of marmatite. The enrichment of Ga is closely related to the spatial position of the granite. Ge and In enrichment layers are stable and have a high degree of coincidence with the main orebody it is speculated that Ge and In are mineralized together with pofymetallic sulfides. [ABSTRACT FROM AUTHOR]