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北秦岭地区光石沟铀矿床是我国著名的伟晶岩型铀矿床,是丹凤地区铀矿找矿勘探的重点矿床。铀矿床主要发育在灰池子岩体南部的二长花岗岩和大毛沟碱性长石花岗岩与黑云母伟晶岩的外接触带上。前人对该矿床及相关花岗岩开展了许多研究,得到了许多重要的认识,但对于花岗岩的源区特征、形成时代及成岩背景等方面还存在的争议,特别是对大毛沟碱长花岗岩的相关认识还较为薄弱。本次研究选择矿床相关的灰池子南部二长花岗岩和大毛沟碱长花岗岩为研究对象,开展了系统的
Guangxigou uranium deposit in North Qinling area is a well-known pegmatite-type uranium deposit in China and is a key deposit for uranium prospecting and exploration in Danfeng area. The uranium deposits are mainly developed on the outer contact zones of monzonitic granite and big-furrow alkaline feldspar granite and biotite pegmatite in the south of the Huichizi granite. Many previous studies on this deposit and related granite have obtained many important understandings. However, there are still controversies about the characteristics of the source area, age of formation and diagenetic background of granite, especially for the Da-Furou Alkaline Long Granite Knowledge is still relatively weak. In this study, we selected the granitoids in the southern part of the Huichizi area associated with the deposit as the research object and carried out a systematic