青海东昆仑山四角羊地区铁多金属矿床的成矿地质特征

Mineralization characteristics of iron-polymetallic deposits in Sijiaoyang area, East Mt.Kunlun, Qinghai Province, China

摘要: 四角羊铁多金属矿床产在上石炭统缔傲苏组碳酸盐岩与岩体的接触部位，含矿岩系为热接触变质形成的矽卡岩。矿区内圈出45条铁多金属隐伏矿体，矿石类型复杂，且具有2期成矿的特征，早期以磁铁矿、磁黄铁矿、黄铁矿和黄铜矿为主，晚期以闪锌矿、方铅矿和黄铁矿组合为主。

Abstract: Iron-polymetallic deposits in Sijiaoyang area is hosted within the contact zone between its mother rock and upper Corboniferous Diaosu Group corbonate rocks. Ore-bearing rocks belong to skarns formed of thermal metamorphism cause. 45 hidden orebodies have been delinated within this area with various ore types. What’s more, it’s indicated that mineralization can be divided into two phases. Earlier phase is dominated by magnetite, phyrrhotite, pyrite and chalcopyrite, while the later one is dominated by sphalerite, galena and pyrite portfolio.