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苏石坑铅锌矿床产于泥盆系天子岭组碳酸盐岩中.矿体受NW向苏石坑—和尚(山东)背斜控制,背斜倾伏端的层间破碎带和近轴部NW向断裂为其容矿构造.矿体呈层状、似层状和脉状,矿石的物质组成简单,主要为方铅矿和闪锌矿.矿床的矿石铅同位素组成为~(206)Pb/~(204)Pb=18.505～18.649、~(207)Pb/~(204)Pb=15.618～15.757、~(208)Pb/~(204)Pb=38.652～39.143,模式年龄为118～189 Ma.方铅矿和闪锌矿的硫同位素组成为δ~(34)S=-0.95‰～+1.05‰.含矿围岩及矿石的碳、氧同位素组成分别为δ~(13)C_(PDR)=-7.61‰～-2.55‰,δ~(18)O_(SMOW)=8.43‰～13.66‰.流体包裹体的均一温度范围为100～230℃,主要在120～150℃之间;成矿流体的盐度集中在5～8wt%(NaCl)之间.上述地质地球化学特征充分说明了苏石坑铅锌矿床是一个浅成中低温岩浆(体)源矿床,成矿物质主要来自中生代岩浆(体),部分来自地层,成矿时代为燕山中晚期(J_3—K_1).
The Su-Shi-kuan Pb-Zn deposit is produced in carbonate rocks of the Devonian Tianziling Formation, which is controlled by the NW-trending Astragant-monk (Shandong) anticline, the inter-layer crustal zone at the beached dip and the paraxial The ore body is stratified, stratified and vein-like, and the composition of the ore is simple, mainly galena and sphalerite.The lead isotopic composition of the ore deposit is ~ (206) Pb /_(204)Pb=18.505~18.649,~(207)Pb/~(204)Pb=15.618~15.757,~(208)Pb/~204)Pb=38.652~39.143, and the model age is 118~189 Ma . The sulfur isotopic composition of galena and sphalerite is δ ~ (34) S = -0.95 ‰ ~ 1.05 ‰. The carbon and oxygen isotopic composition of ore-bearing rocks and ores are δ ~ (13) C_ (PDR ) = - 7.61 ‰ ~ -2.55 ‰, and δ ~ (18) O SMOW = 8.43 ‰ ~ 13.66 ‰. The homogenization temperature range of fluid inclusions is from 100 ℃ to 230 ℃, mainly between 120 ℃ and 150 ℃. The fluid salinity is concentrated in the range of 5 ~ 8wt% NaCl.The geological and geochemical characteristics above fully illustrate that the Su ShiKeng Pb-Zn deposit is a shallow-medium-low-temperature magmatic (ore body) source deposit, and the ore-forming materials mainly come from the Mesozoic magma (Body), partly from the strata, mineralization age Yanshan middle and late (J_3 K_1).