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在地壳中锆石是一种广泛分布而含量甚微的重矿物,它不仅是火成岩中一种最常见的副矿物,而且在变质岩和许多沉积岩中也都普遍可以见到。由于锆石的颗粒细小,硬度较大,化学性质稳定,耐高温,即使岩石遭受过强烈风化,变质蚀变,甚至熔融等地质作用之后,虽然其中部分锆石发生了不同程度的变化,但仍有相当一部分保存下来了。锆石的形成主要是在岩浆岩的结晶阶段,一般认为它的晶出多在主要造岩矿物结晶之前,可以反映出岩浆岩的某些特征成份和形成环境。在不同时间,不同条件下形成的锆石往往会在颗粒大小、颜色、
In the earth’s crust, zircon is a widely distributed and neglected heavy mineral that is not only one of the most common igneous minerals in igneous rocks, but also commonly found in metamorphic rocks and many sedimentary rocks. Due to its fine grain size, high hardness, stable chemical property and high temperature resistance, even though some of the zircons have changed to some extent even after the rocks were subjected to severe weathering, metamorphic alteration and even melting, A considerable part of preserved. The formation of zircon is mainly in the crystallization stage of magmatic rocks. It is generally believed that most of the crystalline outgrowths occur before the crystallization of the major rock-forming minerals and can reflect some of the characteristic components of the magmatic rocks and the formation environment. At different times, zircon formed under different conditions tend to have different sizes, colors,