Tectono-geochemical characteristics ofWandongshan-Bijiashan ore block in the Beiya Au-polymetallic deposit, northwestern Yunnan

Located in northwest Yunnan, the Beiya gold deposit is a skarn porphyry type gold polymetallic deposit with rich alkali. The distribution of orebodies is related to structure and porphyry, which constitutes the basis for the application of the tectonogeochemical method. Through R type cluster analysis and factor analysis, the authors recognized two combinations of elements. One is Au-Ag-Fe-Cu-Sb-Hg-Sn-Pb-Co-Mo, and the othor is Zn-Pb. Then the authors used them to draw a tectono-geochemical map, which included the combination of elements and anomalies. With the map, the authors detected the migration direction of the ore-forming fluid and the location of the orebody. It is held that the Bijia Mountain has a relatively good exploration potential.