摘要
浅成低温热液金矿指产于陆相火山岩系中或相邻岩石中,形成温度低于300℃(150~300℃),成矿流体是大气降水与岩浆热液形成的混合热液的一类金矿床。近几年对浅成低温热液金矿研究结果突破了浅成低温热液金矿只形成于中—新生代火山岩系中的概念,在石炭纪陆相火山岩中发现了浅成低温热液金矿。浅成低温热液矿床一般产于岛弧环境或大陆边缘环境的中—酸性陆相火山岩系及相邻岩石中。根据矿物组合及蚀变特征,浅成低温热液矿床可分为高硫型、低硫型和碱质型3类,按成矿地球化学条件及矿物组合分为明矾石-高岭石型和绢云母-冰长石型。
The epithermal gold deposit occurs in subaerial volcanic rock series or adjacent rocks, its formation temperature is less than 300 (150 ̄300), its oreforming fluid is the mixed hydrothermal solution formed by the mixing of magmatic solution with meteoric water. By studying epithermal gold deposits in recent years, some epithermal gold deposits are found in Carboniferous subaerial volcanic rock series. This breaks a traditional idea that the epithermal gold deposit only occurs in Mesozoic-Cenozoic subaerial volcanic rock series. Epithermal gold deposits are generally hosted by intermediate-acid is subaerial volcanic rock series and adjacent rocks in island arc or continental margin evironment. Epithermal gold deposits can be divided into three types according to the features of mineral assemblage and alteration:high sulfur type, low sulfur type and alkali type. On the basis of mineral assemblage and metallogenic geochemical conditions, epithermal gold depoists are divided into two types:alunitekaolin
出处
《黄金地质》
1995年第3期34-38,共5页
Gold Geology
关键词
金矿床
低温
热液
成矿
矿床模型
deposit type, epithermal gold depositite type and sericiteadularia type.