【摘要】 论文对中国钨矿床近年来的研究成果进行了系统归纳和分析,结果显示:从成矿时代来看,燕山期是中国钨矿床最主要的成矿期,且绝大多数钨矿床的形成与岩浆岩相关,成矿作用与成岩作用具有同步性;从成矿作用过程来看,石英脉型与矽卡岩型钨矿床成矿作用均始于岩浆演化晚期经液态分异形成的浆液过渡态流体;从成矿流体特征来看,岩浆期后热液流体具有中-高温、中-低盐度、低密度的特点;从成矿流体来源来看,目前绝大多数研究成果表明矽卡岩型钨矿床成矿流体体系中既有岩浆水,又有大气降水,而石英脉型钨矿床成矿作用过程中是否存在大气降水仍存在较大争议;从成矿元素迁移及沉淀机制来看,钨在自然界中的迁移方式主要是∑WO42-,而引起钨的络合物发生分解、沉淀的主要原因有流体混合作用、流体不混溶作用、流体体系温度降低、水岩反应、富钙斜长石的蚀变分解等。更多还原

【Abstract】 The paper summarizes and analyzes the research results of tungsten deposits in China in recent years, and gets the following understanding. From the metallogenic epoch, Yanshan period is the most important metallogenic period of tungsten deposits in China, and the formation of most of the tungsten deposits in China is related to magmatic rocks, and the mineralization is synchronized with the diagenesis. With the metallogenic process, the mineralization of quartz vein and skarn type tungsten deposits began in the late magma evolution by liquid separation; about the characteristics of ore-forming fluid, the hydrothermal fluid has the characteristics of a medium to high temperature, medium low salinity and low density. To the source of metallogenic fluid, the research results of most scholars show that there are both magmatic water and atmospheric precipitation in the ore-formingfluid system of skarn type tungsten deposit. There are still a lot of controversy about whether there is precipitation in the metallogenic process of quartz vein type tungsten deposit. On the mechanism of metallogenic element migration and precipitation, the main migratory way of tungsten in nature is ∑WO42-, and the main causes of the decomposition and precipitation of the tungsten complex are fluid mixing and fluid immiscibility. The temperature of the fluid system is reduced. Water rock reaction and alteration of calcium rich plagioclase are decomposed.更多还原