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The platinum group element is ruthenium (Ru), rhodium (Rh), palladium (Pd) , and osmium (Os), iridium (Ir), platinum (Pt) six elements collectively . Due to its excellent physical and chemical properties , widely used in the industry , so explore the genesis of PGE deposits geological community one of the hot research field . Jilin Hunchun chimney Lizi - head Longshan platinum- palladium mine in in Yanji - Raohe Late Paleozoic gabbro rock - diorite rock - anorthosite structure magmatic belt . Through the chimney Lizi - head Longshan mine mineralogy , petrology and geochemistry studies , made ??the following main results : 1. Chimney Lizi ore-bearing rock Grossular hedenbergite , gabbro . The rock thermal contact metasomatic metamorphism made ??. 2 . Chimney Lizi mine experienced three mineralization : the first phase of the sulfide slurry crystallization period , the combination of the main metallic minerals : chalcopyrite , pyrrhotite , pyrite ; second phase hydrothermal period , The main metallic mineral assemblage : chalcopyrite , pyrite, pyrrhotite , flash zinc mine , and arsenic platinum mine ( ? ) ; oxide , metallic minerals are mainly magnetite . Chimney the Lizi ore in PGE concentrations (Pt up to 7.45 × 10 -6 < / sup >) , the crystallization of metallic minerals Os , Ru , Rh metal content , Pt, Pd content . Therefore, Pt speculated crystalline phase mineralization process , Pd single substance or intermetallic material type output . 4. The hydrothermal phase metal mineral PGMs content greatly diminished , platinum group metals mainly exist in the form of a single mineral enrichment and dispersion effects of oxidation on platinum-group metals in the area is not obvious . 5 head Longshan gabbro with typical magmatic crystallization structure , part of the gabbro with a heap crystal structure , mainly through fayalite , augite , hornblende and times feldspar minerals of iron spinel stone , apatite . Metallic mineral assemblage pyrite , pyrrhotite , chalcopyrite , ilmenite , magnetite . 6 . Finally, set the temperature too head Longshan mine intrusive rocks greater than 550 ℃, the formation pressure 1.5 ~ 2.5Kb between ; chimney the Lizi rock formation temperature between 750 ~ 900 ℃ .
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