The Discussion of Geological Characteristics and Genesis of Baiji River Stratiform Zinc Deposit,Dengying Dolomitite group of Sinian in Western Hubei Province

In West Hubei,some new found ore deposits such as Baiji river zinc deposit,Aozigang lead-zinc deposit and Bingdongshan lead-zinc deposit have been discovered in dolomitite of Sinian stratum,which components are simple,including rich zinc and deficient lead;Ore structure mainly includes the fine-grained structure and metasomatic texture structure;Ore constitution,which consists of brecciated structure,impregnation structure,laminated structure,streaky structure and "snow top " structure,changes obviously;The mineralization temperature is low and the dolomitization replaces breccia extensively;Sulfur isotope is heavy sulfur and the range is very broad,the exchange of Sulfur isotope between galenite and blende keeps balance,the blende and galena deposit in an closed relatively environment.The mineral deposit geological character can analogy with MVT type lead zinc deposit and its style is contained-carbonatite epigenetic deposition lead zinc deposit