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辽宁共同──疙瘩沟地区金-多金属矿床成矿流体性质研究
引用本文:李文良,徐燕夫,雷时斌.辽宁共同──疙瘩沟地区金-多金属矿床成矿流体性质研究[J].黄金地质,1996(2).
作者姓名:李文良  徐燕夫  雷时斌
作者单位:黄金地质研究所
摘    要:共同—疙瘩沟地区金-多金属矿床(点)多产于燕山早期花岗岩中,矿体石英中流体包裹体较发育,以气液包裹体为主。通过流体包裹体的研究认为:成矿流体属于Na+-Ca2+-Cl-[SO4]2-型,中—低盐度(5.7%~8.5%),成矿温度为中(偏低)温(225~275℃),压力为75.1~115.8MPa,pH为5.23~6.05,Eh为-0.57~-0.62V,推断Au最可能的搬运形式为[AuCl2]-。可见该地区金-多金属矿床(点)为中(偏低)温岩浆期后热液矿床。

关 键 词:金-多金属矿床  成矿物理化学条件  流体包裹体  辽宁

STUDY ON CHARACTERISTICS OF OREFORMING FLUID IN GOLDPOLYMETALLIC DEPOSIT, GONGTONGGADAGOU AREA, LIAONING
LiWenliang XuYanfu LeiShibin.STUDY ON CHARACTERISTICS OF OREFORMING FLUID IN GOLDPOLYMETALLIC DEPOSIT, GONGTONGGADAGOU AREA, LIAONING[J].Gold Geology,1996(2).
Authors:LiWenliang XuYanfu LeiShibin
Abstract:Goldpolymetallic deposits in GongtongGadagou area mostly occur in early Yanshanian granite. Fluid inclusions in quartz develop well, are mainly gasliquid inclusions. From the study of fluid inclusions, it is concluded:oreforming fluid belongs to Na+Ca2+Cl- 2-type with lowtomoderate salinity (57%-85%),the metallogenic temperature is 225-275, the pressure 751-1158 MPa, pH 523-605, Eh-057-062 V, and the possible transported form of gold is deduced to be -. Thereform, goldpolymetallic deposits in this area belong to moderate(or low)temperature postmagmatic hydrothermal ones.
Keywords:gold polymetallic deposit  physicalchemical conditions of ore formation  fluid inclusion  Liaoning  
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