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中国北方超大型热水沉积硫化物矿床产于秦岭中段和阴山西段两区，主要类型为多金属及硫铁矿床。地质地球化学特征与世界中元古界和古生界（ 主要为泥盆系） 中的ＳＥＤＥＸ 硫化物矿床基本相同：成矿时代为１－４ ～１－２ Ｇａ 和０－４ ～０－３ Ｇａ， 均产于克拉通边缘盆地中；矿体延长达千米以上，具多层性特征；富硫化物矿石为块状条带状，矿物组合简单，有显著分带性；硫同位素组成为海相硫酸盐型，铅同位素为混合程度较高的均匀性铅等。研究表明，中国北方的ＳＥＤＥＸ 矿床与世界同类矿床有相似的形成条件，即形成于大陆边缘演化中的破裂晚期至聚合初期，受地热异常岩浆侵入冷却退变质作用系统控制。同生期热水沉积成矿形成了矿床的基本规模。后生期成矿元素的活化富集及矿体的加厚作用，对于形成巨大规模和高品位矿石的超大型矿床是重要的。
The ultra-large hydrothermal sedimentary sulphide deposits in northern China are produced in two areas, namely the middle part of Qinling and the western part of Yinshan. The main types are polymetallic and pyrite deposits. Geological and geochemical characteristics and the world in the Proterozoic and Paleozoic (mainly Devonian) SEDEX sulfide deposits are basically the same: the mineralization age of 1-4 ~ 1-2 Ga and 0-4 ~ 0-3 Ga, are all produced in the edge of the craton basin; ore body extension of up to kilometers, with multi-layered features; sulfide-rich ores are massive strip, mineral assemblage simple, significant zonation; sulfur isotopic composition For the marine sulfate type, lead isotopes for a higher degree of homogeneity of lead and so on. The study shows that the SEDEX deposit in northern China has similar formation conditions with the similar deposits in the world, that is, from the late rupture to the early stage of polymerization in the evolution of the continental margins, controlled by the system of geothermal anomaly-magmatic intrusive-cooling degeneration and metamorphism. The same period hydrothermal sedimentary mineralization formed the basic size of the deposit. The activation and enrichment of metazoan ore-forming elements and the thickening of the ore bodies are important for the formation of very large deposits of large-scale and high-grade ore.