CAJ | 학술논문

新疆达坂城铜沟铜矿床产于下石炭统七角井组一套火山-沉积岩地层中，矿体受断裂控制，呈脉状、似层状产出。流体包裹体研究表明，方解石矿物中以发育NaCl-H2O型气液包裹体为特征。测温结果显示，成矿流体完全均一温度为93℃~340℃，峰值130℃~170℃；冰点温度峰值-2.8℃~-0.1℃；流体盐度峰值为0.18%~4.65%NaCleqv，流体密度为0.59×10-3~0.97×10-3 kg/m3，平均0.89×10-3 kg/m3，表明成矿流体具有低温度、低盐度、低密度的流体特征。对成矿压力和深度的估算表明，成矿压力为11.9~80 MPa，捕获深度小于2.67 km，表明其具浅成热液矿床的特征。同时硫同位素显示出混合硫特征。结合矿床地质特征，铜沟铜矿床属中低温脉状热液矿床。
신강체판성동구동광상산우하석탄통칠각정조일투화산-침적암지층중，광체수단렬공제，정맥상、사층상산출。류체포과체연구표명，방해석광물중이발육NaCl-H2O형기액포과체위특정。측온결과현시，성광류체완전균일온도위93℃~340℃，봉치130℃~170℃；빙점온도봉치-2.8℃~-0.1℃；류체염도봉치위0.18%~4.65%NaCleqv，류체밀도위0.59×10-3~0.97×10-3 kg/m3，평균0.89×10-3 kg/m3，표명성광류체구유저온도、저염도、저밀도적류체특정。대성광압력화심도적고산표명，성광압력위11.9~80 MPa，포획심도소우2.67 km，표명기구천성열액광상적특정。동시류동위소현시출혼합류특정。결합광상지질특정，동구동광상속중저온맥상열액광상。
Tonggou copper deposit produced in volcanic-sedimentary formation in Lower Carboniferous Qijiaojing Group (C1qj) in Dabancheng,Xinjiang.Orebody produced as vein and stratoid,and controlled by fault structure.The study indicates that fluid inclusions have the characteristics of development NaCl-H2O type gas-liquid in this area.The tempera-ture results show that the homogenization temperatures range from 93°C to 340.4 °C,peak of 130°C to 170 °C;The fluid salinity peak values range between 0.18%~4.96%NaCleqv;The fluid density ranges from 0.589×10-3 to 0.966×10-3kg/m3, and an average of 0.89×10-3 kg/m3.It indicates that the ore-forming fluid of Tonggou copper deposit has the characteris-tics of low temperature,low salinity,and low density fluid.To estimate and get the mineralization pressure of 11.9 to 80 MPa,capture depth of less than 2.67 km.It shows the characteristics of epithermal deposits.Simultaneously sulfur isotope has the characteristic of hybrid sulfur.Combined the geological characteristics of this deposit,the Tonggou copper deposit belongs to intermediate temperature hydrothermal veins deposit.