【摘要】 南岭地区燕山早期多阶段复式岩体中,第三阶段补充侵入的细粒花岗岩,是本区许多钨锡铌钽矿床形成的直接母岩。文中对它的地质产状形态、岩石学、岩石化学和交代蚀变作用等方面作了阐述。论述了成矿岩体矿化与否以及形成何种类型的矿化与岩体形态、气化热液蚀变作用的类型和强度、多阶段岩体成矿元素的演化和富集程度等有密切关系,探讨了成矿模式,并指出它对找矿勘探的现实意义.更多还原

【Abstract】 The fine-grain granites formed in the third stage complementary intrusion inthe polystage complex rock bodies during the early Yenshanian period in Nan-ling region are the direct mother rock that formes the deposits of W-Sn-Nb-Ta.This paper has described geologic occurrence and shape,petrology,petrochemi-stry and replace-alteration processes of the rock bodies.It is explained wheth-er metalogenic granite body is mineralized or not and what kind of mineraliza-tion is formed are closely related to shape of the rock body,type and strengthof the pneumato-hydrothermal alteration,metalogenic element evolutionand enrich degree of the polystage rock body.Metalogenic model has been pre-liminaryly studed.The actual significance for finding and prospecting mineralsis suggested.更多还原