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一、前言蓝晶石类矿物※原料对发展现代工业和尖端技术具有重要意义。自1978年开始进行蓝晶石类矿物资源的普查工作以来,国内已发现多处蓝晶石产地。在成因上,它们几乎都属于前寒武纪区域变质类型,以片岩——片麻岩型为主,石英岩型较少,“伟晶岩型”罕见。据目前所知,吉林柳树沟石英岩型蓝晶石矿,是国内唯一属动力变质成因的蓝晶石矿。它在成因、成矿时代、原岩、变质矿物组合及成矿作用等方面,具有同区域变质类型明显不同的特点。这些特点,在已有矿床学和变质作用论著中,尚未得到明确阐
First, the preface kyanite minerals ※ raw materials for the development of modern industry and cutting-edge technology is of great significance. Since the beginning of the census of kyanite mineral resources in 1978, a large number of kyanite origins have been discovered in China. In genesis, they belong to almost all Precambrian metamorphic types, mainly schist-gneiss type, quartz rock type is less, “pegmatite type” rare. As far as we know, Jilin willow ditch quartzite type kyanite quarry, is the only genesis of dynamic metamorphic kyanite. It is in the origin, the mineralization age, the original rock, metamorphic mineral assemblages and mineralization, with the characteristics of the same type of metamorphism. These features have not been clearly elucidated in the literature on the existing mineralogy and metamorphism