【摘要】 通过对辽西蒋家屯和兰家沟钼矿的流体包裹体研究,两种不同类型的成矿流体被识别出来.蒋家屯脉状钼矿含矿石英脉中发现大量的Ⅰ型水溶液流体包裹体,成矿流体的均一温度为163～234℃,盐度为3.06%～6.01%（NaCl eqv,质量分数）,表明成矿流体为中低温度、低盐度流体.兰家沟斑岩型钼矿含矿石英脉中发育含CO₂Ⅱ型包裹体,包裹体内较高含量的CO₂指示了成矿深度较大.兰家沟钼矿的成矿流体均一温度为200～283℃（Ⅰ型包裹体）和281～346℃（Ⅱ型包裹体）,盐度为2.74%～7.31%（NaCl eqv,质量分数）（Ⅰ型包裹体）和3.52%～4.80%（NaCl eqv,质量分数）（Ⅱ型包裹体）.鉴于上述研究,与大型兰家沟斑岩型钼矿相比,目前揭露的蒋家屯脉状钼矿体成矿深度较小,成矿温度较低,其深部可能会发现更具经济价值的斑岩型钼矿体.更多还原

【Abstract】 Based on the fluid inclusion study on the Jiangjiatun and Lanjiagou Mo deposits,two distinctive ore-forming fluids were identified.Fluid inclusions in the Jiangjiatun Mo deposit are characterized by type Ⅰ two-phase aqueous inclusions,with homogenization temperatures from 163 to 234℃ and salinity values from 3.06% to 6.01%.It indicates that ore-forming fluids are mo derate-low homogenization temperature and salinity.Fluid inclusions in the Lanjiagou Mo deposit are featured by type Ⅱ CO₂-bearing fluid inclusions,indicating a deep formuation environment.Microthermometric data in the Lanjiagou Mo deposit show homogenization temperatures from 200 to 283℃ for type Ⅰ inclusions and from 281 to 346℃ for type Ⅱinclusions,and salinities from 2.74% to 7.31% for type Ⅰ inclusions and from 3.52% to 4.80% for type Ⅱ inclusions.In view of the above research results,it is believed that the discovered ore bodies in the Jiangjiatun deposit were formed in a much shallower environment with lower homogenization temperature and salinity than the Lanjiagou Mo deposit.It indicates that it is possible to find Mo orebodies at depth beneath the exposed ore bodies.更多还原