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新疆塔木铅锌矿赋存于石炭系碳酸盐岩断层破碎带中,矿体和手标本尺度呈现管/脉构造特点。管/脉壁主要由闪锌矿、方铅矿构成,管/脉中心充填白云石Ⅱ,管内可见钡-钾长石微粒,暗示成矿流体淋滤下伏地质体。充填期白云石Ⅱ较第Ⅰ期白云岩化灰岩表现出贫13C、18O的特点,反映成矿过程可能存在贫13C、18O的物质加入。鉴于白云石Ⅱ流体包裹体均一温度为119～191℃、闪锌矿流体包裹体存在CH4、C2H6、H2S气相组分、邻区达木斯乡和什拉甫剖面下石炭统有4个沥青显示点和24个荧光显示点、麦盖提斜坡海相石炭系曲1井、麦3井原油δ13C介于-34‰～-31‰之间及流体包裹体液相组分未见SO42-,可以推测成矿作用与热化学硫酸盐还原(TSR)过程相关。综合上述因素,可以认为新疆塔木铅锌矿为后生的与TSR作用相关的矿床。
The lead-zinc deposits in the Tarim area of Xinjiang occur in the fault fracture zone of Carboniferous carbonate rocks, and the scale of the ore body and hand specimens show the characteristics of pipe / vein structure. The tube / vein wall is mainly composed of sphalerite and galena. Dolomite II is filled in the tube / vein center and barium-potassium feldspar particles are visible in the tube, suggesting that the ore-forming fluid leaches the underlying geological body. The dolomite Ⅱ in the filling stage shows characteristics of 13C and 18O lower than that of the dolomite limestone in the first stage, which indicates that there may be a poor 13C and 18O material addition in the mineralization process. In view of the homogenization temperature of dolomite Ⅱ fluid inclusions at 119 ~ 191 ℃, there are CH4, C2H6 and H2S gas components in the sphalerite fluid inclusions, and four bitumens in Damosian and Shilafu sections in the adjacent area Point and 24 fluorescence display points, δ13C of Carboniferous Quaternary Well 1 and Mai 3 well in the Mageti slope are between -34 ‰ and -31 ‰, and the liquid phase components of the fluid inclusions do not have SO42-, It is speculated that the mineralization is related to the thermochemical sulfate reduction (TSR) process. Based on the above factors, it is considered that the Tajmu lead-zinc deposit in Xinjiang is a epigenetic deposit related to TSR.