Geological geochemical character of Dongga gold deposit in Xietongmen County, Tibet

The Dongga gold deposit is the only one that discovered in Gangdisi coppergold metallization belt by now.Controlled by different orebearing spaces,ore body mainly includes tectonic altered rock type,cryptoexplosion berrica type,quartz vein type,etc.The first type is the largest in scale and the second type is the highest in content.It is concluded from geochemical character researches of the ore H,O,S,Pb isotopes and fluid envelope that the Dongga gold deposit belongs to mesoepithermal structure altered rock type gold deposit associated withisland arc volcanogenic magmatic occurred in the process of plate subduction.