| The occurrence states of gold, platinum and palladium in Sichuan Dayanzi platinum-palladium in pyrxenite are described. Based on the information of mineral identification, the occurrence states of gold, platinum and palladium in minerals of dolomite and quartzite type PGE deposits are divided into carbonate occurrence phase, sulphide occurrence phase, intermetallic compound(PGE alloy) and residue phase. After establishing the extraction agent and conditions, contents of gold, platinum and palladium in each phase were determine by ICP-MS. The results showed that, the ratios of the extracted aggregates amount sum of Pt, Pd and Au in each phase to their total contents of each element are 94.3%~96.8%, 99.9%~108% and 91.0%~99.1%, respectively. The sulfide state and PGE alloy state are the major states of platinum, palladium and gold in the occurrence. |
