Geochemical Features Of Characteristic Sectionsof Dongguashan Stratabound Skarn Copper Ore Deposit In Tongling Area

Coupling former research done by others with my work ,the mechanism of Dongguashan bedded copper deposit in Tongling city ,Anhui province ,China could be added up to the following :1 special rock series combination : Wutong sandstone series(D3w) ,Huanglong dolomite series(C2h) ,Chuanshan limestone series (C3c)and granite diorite .the ore-forming materials would be transferred from granite diorite and sandstone to dolomite and limestone .For the change of physical-chemical setting ,the components of ore-forming be precipitated and accumulated. For the difference of infiltration rate ,limestone confine fluid flow ,the fluid flow along dolomite and the components would be precipitated and accumulated along it. The bedded copper deposit come into being.When the fluid flowed to limestone ,it was screened and recycled ,so the good components in sandstone and granite diorite was dissoluted ,and transferred several times .And the mechanism provide plenty components for the deposit.2 The limestone was a screen and made the fluid recycled . For the recycling fluid transferred new components, the metasomatic reaction occurred, and the mineral zone different from components came into being .3 Coupling the former researches done by others with my work about the deposit ,the resource of ore- forming components would be explained as the following :copper mainly would be derived from granite diorite ,and sandstone in part , sulfur mainly be derived from dolomite mainly, and sandstone in part, Fe might be derived from limestone and sandstone...