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某岩体为一产铀的加里东期复式岩体。本文研究了该岩体中副矿物锆石的形态、包体和环带及其延长度、粒度的变化,将其与围岩中副矿物锆石进行对比并结合岩体中锆石的稀土元素地球化学特点,表明该岩体是区域上的沉积变质岩重熔交代的产物。笔者还从岩体中锆石的含铀性,ZrO_z/HfO_2值与岩石中Na_2O的关系探讨了成矿中铀和钠的来源,并从副矿物锆石的标型方面提出了产铀岩体的评价标志。
A rock for the production of uranium Caledonian compound rock mass. In this paper, the morphologies, inclusions and zonules of accessory minerals in this rock mass are studied. The changes of their length and grain size are compared with the zircons of the accessory minerals in the surrounding rock. Geochemical characteristics, indicating that the rock mass is metamorphic rocks on the area of remelting metamorphic products. The author also discusses the source of uranium and sodium in ore-forming from the relation between the uranium content of zircon in the rock mass, the value of ZrO_z / HfO_2 and the Na_2O in the rock, and puts forward the origin of uranium-bearing rock mass Evaluation mark.