我国境内变质岩系和有关岩类分布比较广泛(见图),西起帕米尔、昆仑,东至沿海山地、丘陵和台湾等岛屿,北自大、小兴安岭、蒙古高原、阿尔泰山,南至海南等岛。从变质岩系或变质岩所发生的变质时代看,包括了所有的地质时代,其中以前寒武系最为发育;而有些变质岩系,尤其是时代较老的,又往往经历了两期乃至两期以上的变质作用。它们的原岩建造与所经受变质作用的性质和变质程度,基本上包括了迄今已被人们所认识到的各种情况,构成了一些多样的变质杂岩和混合杂岩,蕴藏着多种矿产。主要的有铁、 The metamorphic rocks and related rock masses in China are widely distributed (see photo). From the west, there are Pamir and Kunlun Mountains to the coastal areas in the east, hills and islands in Taiwan, North Zizhu, Xiaoxing’an Mountains, Mongolia Plateau, Altai Mountains and Hainan Island. From the metamorphic age of the metamorphic rocks or metamorphic rocks, all the geological ages are included, of which the Precambrian is the most developed; while some metamorphic rocks, especially the older ones, often experience two or even two Period of metamorphism. The nature and metamorphism of their metamorphism and metamorphism of the original rock basically consist of the various situations that have been recognized so far and constitute a number of diverse metamorphic and mixed complexes that contain many kinds of minerals . The main iron,