四川杨柳坪Cu-Ni-PGE矿田区域地球化学异常特征

A stream sediment surveying with scale 1:200000 for the platinum group elements (PGE) deposits was conducted. The results shows that the indicator elements in the Yangliuping Cu-Ni-PGE deposit are Pt, Pd, Cr, Ni, Cu, Co, Ag, Cd, Sb, Pb and Zn. The sequence of horizontal zoning of those geochemical anomalies from ores to wallrocks is from Pd, Pt-Cr, Ni-Co, Cu-Cd, Ag-Zn-Pb to Sb. This study also shows that the stream sediment surveying with scale of 1:200000 is an effective method for delineating the PGE regional geochemical anomalies in the stage of regional reconnaissance. It should take into not only anomaly intensity and size of mineralization elements, but also other indicator elements during screening regional geochemical anomalies of Pt and Pd.