论文部分内容阅读
云南可划分11个锑(金)成矿带(区)。Sb-Au属同一成矿系列(Sb略晚),二者常相伴产出。滇东坡脚组(D1p)与滇西三合洞组(T3s),同为锑矿矿源层。滇东南与黔西区玄武岩喷溢早期的大厂层(P3d)、主期玄武岩组(P3β)、晚期龙潭组(P3l),三者含Sb、Au背景值远高于全球玄武岩,构成统一的Sb—Au矿源层(岩),在有利构造条件下,产出Sb矿(伴生Au)、Au矿(伴生Sb)或二者共存(广南堂上),其成因都与幔源玄武岩喷溢作用有关。
Yunnan can be divided into 11 antimony (gold) metallogenic belt (area). Sb-Au belong to the same metallogenic series (Sb slightly later), both often accompanied by output. The D1p of Triassic and Triassic Cave Group (T3s) in western Yunnan are the same source rocks for antimony. The early basalts (P3d), main basalts (P3β), and late Longtan formations (P3l) in the basalt spurting in southeastern Yunnan and western Guizhou all have Sb and Au background values much higher than those of the global basalts, forming uniform Sb -Au source rocks (rocks). Under favorable structural conditions, Sb ore (accompanying Au), Au ore (associated Sb) or both coexist (Guangnan Tang), and their origin is related to the mantle-derived basalt spurting .