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The Anqing areas is a major ore-forming section of the middle and lower reaches of the Yangtze River metallogenic belt . Region skarn wide distribution , the majority of the ore body and associated skarn , Anqing region larger deposit, geological characteristics unique iron and copper deposits , with a typical sense . Geological and mineral deposit geology, petrography and petrology of of Anqing skarn and related iron and copper deposits , especially mineralogy and trace elements and REE geochemical studies , based on analysis of Anqing silicon skarn and related causes of iron and copper deposits , made ??the following main results and understanding . Facies school observations indicate that , the Anqing copper and iron skarn deposits mainly for diopside skarn and garnet stone skarn rocks and garnet andradite and Ca, Mg, Fe garnet The ore minerals are mainly magnetite , chalcopyrite , pyrrhotite and pyrite combination . Petrology and major element analysis results show that , the Moon Mountain diorite Anqing skarn-type iron and copper deposits mineralization is closely related to high-K calc- alkaline series rocks . Trace elements and REE geochemical analysis results show that , the Anqing Delafossite skarn relatively depleted in Nb , Ta , Zr, high field strength elements and enrichment of Th, La, Ce to such pro magma elements , carbon and wall rock formate rock trace element characteristics quite different ; skarn and diorite is similar trace element characteristics , both relatively enriched in light rare earth , the skarns more losses Sr elements . Mineralogical studies show that , the Anqing Delafossite diorite pyrite with magma, pyrite rare earth elements in the skarn and carbonate closer to possible product of metasomatism . Diorite , magnetite skarn and ore are LREE enrichment feature , diorite magnetite skarn and ore magnetite significant difference in its negative Ce anomalies . Meanwhile, garnet have LREE enrichment and positive Eu anomalies characteristic .
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