当涂县中桥南铁矿地质特征及成矿规律

Geological Characteristics and Metallogenic Regularity of Zhongqiaonan Iron Mine in Dangtu County

中桥南铁矿位于钟姑铁矿田钟姑复式背斜东翼次一级褶皱白象山背斜南段,矿床成因类型为高温气液交代层控矿床,即玢岩铁矿之"白象山式"。在分析区域地质特征、矿区地质特征的基础上,对区内矿化特征、矿床成因以及成矿规律进行了详细分析。通过与白象山背斜处分布的其余3个铁矿床(龙塘湾、白象山、泉水湾铁矿床)进行构造分析,指出了沿白象山背斜存在铁矿远景的找矿方向。通过与勘查发现的白象山外围铁矿、杨庄铁矿、龙山铁矿(深部)和钟九铁矿进行对比分析,揭示了白象山背斜深部的成矿潜力,对于区内进一步开展铁矿找矿工作有一定的参考价值。

Zhongnanqiao iron mine is located in southern section of Baixiangshan anticline that is the secondary fold located in the eastern section of Zhonggu duplex anticline of Zhonggu iron ore filed,the deposit genesis is high temperature gas liquid metasomatism stratabound deposit,that is to say, Zhongqnanqiao iron deposit is belongs to the "Baixiangshan type"of porphyrite iron deposit.Based on an-alyzing the regional geological characteristics and geological characteristics of the mining area,the miner-alization characteristics,deposit genesis and metallogenic regularity of Zhognnanqiao iron deposit are dis-cussed in depth.The comparison of the tectonic characteristics of Zhongqiao iron deposit and the three de-posits (Longtangwan iron deposit,Baixiangshan iron deposit,Quanshuiwan iron deposit)that are located in the Baixiangshan anticline,the prospecting direction of the the Baixiangshan anticline with iron deposit prospecting prospective is proposed.The comparison analysis of Zhongqiaonan iron deposit of the iron de-posits (Baixiangshan peripheral iron deposit,Yangzhuang iron deposit,Longshan iron deposit (deep)and Zhongjiu iron deposit)that has been found,the metallogenic potential of the deep of Baixiangshan anti-cline is revealed,the study results of the paper have some reference for the further prospecting work of i-ron deposit in the area.