CAJ | 학술논문

粗榆金矿床大地构造位置位于华北克拉通北缘东段，主要容矿围岩为花岗岩、石英闪长岩及花岗闪长岩；控、容矿构造以区内NW向断裂为主。重点对不同阶段石英流体包裹体进行了包裹体岩相学、显微测温学和激光拉曼显微探针研究。成矿流体包裹体可分为气液二相包裹体和含CO2包裹体。气液二相包裹体成矿流体盐度为1．73％～11．23％，密度0．71～0．88 g／cm3，均一温度为233．1～304．4℃；含CO2包裹体成矿流体盐度为7．64％～10．87％，密度0．54～0．92 g／cm3，均一温度为268．9～340．4℃。激光拉曼光谱分析表明，流体气相成分主要为CO2和H2 O。稳定同位素研究结果表明，矿床成矿热液来源为幔源 C-H-O流体分异之后的岩浆热液。通过等容线图解法估算成矿压力为95～135 MPa，成矿深度为8．02～9．69 km。结合粗榆金矿床的地质特征，认为粗榆金矿床的成矿类型为中成造山型金矿床。
조유금광상대지구조위치위우화북극랍통북연동단，주요용광위암위화강암、석영섬장암급화강섬장암；공、용광구조이구내NW향단렬위주。중점대불동계단석영류체포과체진행료포과체암상학、현미측온학화격광랍만현미탐침연구。성광류체포과체가분위기액이상포과체화함CO2포과체。기액이상포과체성광류체염도위1．73％～11．23％，밀도0．71～0．88 g／cm3，균일온도위233．1～304．4℃；함CO2포과체성광류체염도위7．64％～10．87％，밀도0．54～0．92 g／cm3，균일온도위268．9～340．4℃。격광랍만광보분석표명，류체기상성분주요위CO2화H2 O。은정동위소연구결과표명，광상성광열액래원위만원 C-H-O류체분이지후적암장열액。통과등용선도해법고산성광압력위95～135 MPa，성광심도위8．02～9．69 km。결합조유금광상적지질특정，인위조유금광상적성광류형위중성조산형금광상。
Cuyu Gold Deposit is located in the east section of the north margin of North China Craton .The major ore-hosting rocks are granite ,quartz diorite and granodiorite ,while the NW-trending faults are major ore-bearing struc-tures in the mine area .Petrographic ,microthermometric and laser Raman spectroscopic studies on fluid inclusions have been given in this paper .The results show that fluid inclusions in quartz crystals can be classified into aqueous two-phase and CO 2-bearing three-phase inclusions .Salinities of aqueous two-phase inclusions range from 1 .73 % to 11.23 %,densities range from 0.71 g/cm3 to 0.88 g/cm3 ,and homogenization temperatures range from 233.1 ℃to 304.4 ℃.Salinities of CO2-bearing three-phase inclusions range from 7.64 % to 10.87 %,densities range from 0.54 g/cm3 to 0.92 g/cm3 ,and homogenization temperatures range from 268.9 ℃ to 340.4 ℃.Laser Raman spec-troscopy of inclusions indicate that the principal gas-phase components are H 2 O and CO2 .The stable isotope analysis results show that the metallogenic fluid originates from the magmatic hydrothermal fluids after the differentiation of mantle-derived C-H-O fluids.According to the diagram of isochore ,the ore-forming pressure is estimated to be 95 MPa to 135 MPa,and the estimated ore-forming depth ranges from 8.02 km to 9.69 km.On the basis of the geological char-acteristics ,the genetic type of Cuyu Gold Deposit is defined as orogenic gold deposit .