GEOCHEMICAL CHARACTERISTICS OF Pt AND Pd ANOMALIES IN STREAM SEDIMENTS AND ORE SEARCHING GUIDE IN PANZHIHUA-XICHANG AREA

Panzhihua-Xichang area is one of the potential regions for PGE deposits in China, because of its good PGE ore-forming geological backgrounds. Geochemical data from six 1:200 000 maps of Panzhihua (Yongren), Huili, Yanbian, Miyi, Yanyuan and Xichang sheets are adopted and treated by means of data-filter to delineate PGE anomalies. The geochemical background and anomalies of Pt and Pd in stream sediments are studied. The relation of their distribution to the Emeishan basalts is also discussed. The prospecting targets for PGE deposits in the area is predicted.