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峙门口铜—铁—金—硫矿床发育上部层状矿体和下部脉状矿体。上部层状矿石重晶石的δ~(34)S值为+14.10‰～+18.90‰。上部层状矿石黄铁矿和方铅矿的δ~(34)S值为+3.50‰～+5.84‰,下部脉状矿石黄铁矿的δ~(34)S值为+4.80‰～+6.80‰。下部脉状矿石中脉石英的δ~(18)O值为+14.3‰～+1 8.5‰,δ~(30)Si值为-0.3%0～-0.2‰。下部脉状矿石黄铁矿Re/Os比值为78.342～175.540,上(顶)部层状矿石中黄铁矿Re/Os比值为62.298～169.545。从下部脉状矿石到上部层状矿石,δ~(34)S值、Re/Os比值和流体包裹体温度249 ℃→97 ℃逐渐降低,~(206)Pb/~(204)Pb、~(207)Pb/~(204)Pb、~(208)Pb/~(204)Pb平均值和Os_总、Re、~(187)Re等含量逐渐增高。矿石黄铁矿Re-Os同位素等时线年龄303±33 Ma。地质地球化学特征反映峙门口铜—铁—金—硫矿床为海底热水喷流沉积成因。
Occidental copper-iron-gold-sulfur deposits develop upper and lower vein-shaped ore bodies. The δ ~ (34) S value of barite in the upper layered ore is + 14.10 ‰ ~ + 18.90 ‰. The δ ~ (34) S value of the upper layered ore pyrite and galena ranges from + 3.50 ‰ to + 5.84 ‰, while the δ ~ (34) S value of the pyrite from the lower vein ore is + 4.80 ‰ ~ + 6.80 ‰. The δ 18 O value of vein quartz in the lower vein ore is + 14.3 ‰ ~ + 1 8.5 ‰ and the δ ~ (30) Si value is -0.3% 0 ~ -0.2 ‰. The Re / Os ratio of pyrite in the lower vein ore is 78.342-175.540, and the Re / Os ratio of pyrite in the upper (top) strata ore is 62.298-169.545. The δ ~ (34) S value, Re / Os ratio and the fluid inclusions temperature gradually decrease from 249 ℃ → 97 ℃ from the lower vein ore to the upper layer ore, and the content of ~ (206) Pb / ~ (204) Pb, 207) Pb / ~ (204) Pb, ~ (208) Pb / ~ (204) Pb and the average values of Os_o, Re, ~ 187Re increased gradually. The ore-pyrite Re-Os isotope isochron age is 303 ± 33 Ma. The geological and geochemical characteristics reflect the origin of copper deposits in the Shumenkou copper-iron-gold-sulfur deposit.