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基金项目:中国地质调查局地质调查项目“广东韶关诸广山岩体南部铀多金属矿整装勘查区矿产调查与找矿预测”(121201004000150017-65,121201004000160901-77),中国地质调查局地质调查二级项目(DD20160134,121201009000150007)
作者单位
赵佳楠,于玉帅 广东省核工业地质局二九一大队 
摘要:
      基于“三位一体”(成矿地质体、成矿构造与成矿结构面、成矿作用特征标志)找矿理论,结合年代学、岩石学、构造地质学、地球化学研究,综合分析并归纳粤北诸广整装勘查区城口矿床的成矿模式和控矿因素,认为城口矿床成矿地质体形成于145~160 Ma燕山早期(γ25),为具有硅化、赤铁矿化的面状蚀变花岗岩体,且具高硅、富碱、贫镁、铝过饱和的岩石地球化学特征;矿化点和异常点主要分布在NEE-SWW向断裂构造上,位于断裂构造交会处;成矿作用标志以蚀变特征为主,具蚀变分带现象,矿化与硅化、绢云母化、赤铁矿化关系密切,矿体主要赋存于强硅化、强绢云母化、强赤铁矿化的蚀变带中。结合成矿U元素“源-动-储-变”特征,提出U元素活化、活化U运移、活化U沉淀、铀矿沉淀储藏4阶段成矿模式,明确城口地区矿床的成矿因素,供该地区铀矿地质勘查工作参考。
关键词:诸广整装勘查区  铀矿  “三位一体”找矿模式  粤北城口
Abstract:
      Based on the ″trinity″ (metallogenic geological body, metallogenic structure and metallogenic structural surface, mineralization characteristic sign) prospecting theory, combined with chronology, petrology, tectonic geology, geochemical studies, this paper analyzed and concluded the metallogenic models and ore-controlling factors of Chengkou area in Zhuguang integrated exploration area, northern Guangdong. It is considered that the metallogenic geological body of Chengkou deposit was formed in early Yanshanian (145-160 Ma) period(γ25). It is a kind of granite rock mass with surface alteration of silicification and hematitization, and featured with high silica, rich alkali, poor magnesium and supersaturated aluminum. The mineralization points and anomaly points are mainly distributed on the NEE-SWW fault structure, located at the intersection of fault structures. Characterized by alteration, mineralization is closely related to silicification, sericitization and hematitization. The ore bodies are mainly deposited in the alteration belts of strong silicification, sericitization and hematitization. Combining the characteristics of ″source-dynamic-storage-change″of metallogenic uranium element, this paper presents the 4-stage metallogenic model: the uranium activation phase, activated uranium migration phase, activated uranium precipitation stage and uranium deposit storage stage. It identifies the metallogenic factors of the deposit in Chengkou area for reference in exploration and development of the area.
Keywords:Zhuguang integrated exploration area  uranium deposit  ″trinity″ prospecting model  Chengkou, northern Guangdong
赵佳楠,于玉帅.粤北诸广整装勘查区城口矿床“三位一体”成矿特征及成矿模式[J].地质学刊,2018,42(2):283-290