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凡口铅锌矿是发育于碳酸盐岩建造中的海底喷溢沉积矿床 ,以“一大二富三集中”的特点和典型的地质地球化学特征吸引着中外矿床地质工作者。叠层状矿体发育于同沉积断裂的旁侧 ,矿层与灰岩呈沉积接触关系。矿石具沉积碎屑组构 ,黄铁矿、闪锌矿具外生特征。稀土元素组成和硫同位素组成反映矿床与同生作用有关。铅同位素组成具有壳源和下地壳来源铅的特征。矿区主要矿层经历海底热泉喷溢沉积—成岩的演化
Fankou lead-zinc mine is a submarine gritty sedimentary deposit developed in the construction of carbonate rocks. Geological workers in China and foreign countries are attracted by the characteristics of “one large, two, three and concentrated” and typical geological and geochemical characteristics. The laminated ore body is developed along the side of synsedimentary faults, and the deposit is in sedimentary contact with the limestone. Ore with sedimentary debris structure, pyrite, sphalerite with exogenous characteristics. The REE composition and sulfur isotopic composition reflect that the deposit is related to its symbiosis. Lead isotopic composition has the characteristics of crustal source and lead from the lower crust. The main ore deposit in the mining area undergoes the sediment-sedimentation-diagenetic evolution of the seafloor hot spring