【摘要】 在综合分析大吉山花岗岩型和石英脉型钨矿床的矿体形态、矿石成分及蚀变、结构构造特征以及硫、氢氧同位素地质特征的基础上，主要依据花岗岩型钨矿体上部出现似伟晶岩带、石英带，矿体呈似层状，发育钨巢，围岩蚀变微弱的特点；石英脉型钨矿普遍出现“砂包”，矿化最强的中部围岩蚀变弱，甚至不发育，脉石矿物与钨巢中造岩矿物相似等特点。提出大吉山钨矿床是由岩浆液态分离成矿作用形成的新认识。更多还原

【Abstract】 On the basis of comprehensive discussion on the forms of orebodies,composition,alteration,texture and structure of the ores as well as the characteristics of sulfur,hydrogen and oxygen isotope geology of the Dajieshan tungsten deposit of granite type and quartz vein type,it is discovered that the pegmatoid belt and quartz vein belt occur in the upper of the tungsten orebodies of the granite type,which occur as stratitoid ores,and develop as tungsten nest with weak alteration in the country rocks,and that“sand bag”can be commonly found in the quratz vein type tungsten deposit.Its country rock was weakly or even less altered in the center where the mineralization was well developed.The gangue minerals are charactered by some similarity with the rock forming minerals in the tungsten nest.A new viewpoint has been advanced for the Dajieshan tungsten deposit to be formed by fractional mineralization of liquid state magma.更多还原