摘要
金顶超大型铅锌矿床主要工业矿体形成于热卤水成矿期。本文通过对流体包裹体的温度、压力、盐度、密度、成分、氢氧同位素及流体性质等地球化学研究表明，金顶矿床具有浅成中一低温、中一低盐度矿化的特点，成矿流体源于沉积盆地热卤水和古大气降水的混合，部分源于深部。从热卤水矿化的早期到晚期，随着方大气降水的加入，流体的Ｔ，ｐ．Ｓ，δ￣（δ￣（１８）Ｏ，δＤ，ｆｏ＿２，ｆｃｏ＿２，ｆｓ＿２均具降低趋势，而ｐＨ，Ｅｈ值略有增大。
The Jinding superlarge lead-zinc deposit was mainly formed at hot brine mineralication stage. By means of geochemical studies of fluid inclusion on temperature,pressure,salinity,densi-ty,composition,hydrogen-oxygen isotopes,and nature of the fluids,it indicates that the deposit is characterized by meso-epithermal mineralization. The ore-forming fluid comes mainly from the mixin9of palaeometeoric water and formation water (hot brine ) in sedimentary basin,and a little bit from,a deep source. The T,p,δ￣(18)O and δD,fo_2,f_(co_2) and fs_2.of the fluid inclusion gradually reduced with the mineralization,and pH, Eh in creased with the mineralization from early to late stage
出处
《矿物岩石》
CAS
CSCD
1995年第4期78-84,共7页
Mineralogy and Petrology
基金
国家基础研究重大项目
关键词
液包体
地球化学
铅锌矿床
超大型
fluid inclusion,geoehemistry , Jinding,lead-zinc deposit,superlarge type
