拔茅山铜矿地质特征及成因

Geological Characteristics and Genesis of Bamaoshan Copper Mine

安徽省枞阳县拔茅山铜矿位于长江中下游铁、铜、金(硫)成矿带中段,庐—枞(庐江—枞阳)火山岩盆地矿集区南部,目前探明铜金属量13 549.84 t,平均品位0.98%,为一小型铜矿床。由于基础资料的限制,多年来该矿床的地质成因一直无法明确。为此,结合区内地质勘探成果,对成矿地质背景、矿区及矿床地质特征、矿床成因进行了分析,认为该矿床应属斑岩型铜矿床类型。在上述分析的基础上,系统总结了找矿标志,对于该区进一步开展地质勘探工作有一定的参考价值。

Bamaoshan copper mine is located in the middle section of the Yangtze river iron-coppergold( sulfur) metallogenic belt and the south part of the Lu-Zong( Lujiang-Zongyang) basin and lava area,where it is in Zongyang County,Anhui province. At present,the amount of proved copper reserves in the mining area is 13 549. 84 t,and the average grade is 0. 98% so,the Bamoshan copper deposit is regarded as the deposit with a small scale. Because of the lack of precise original back data and other materials,the geological genesis of this mine has not been found yet. So,analyzing the genesis of this mine and its prospecting indicators are of great significance for guiding the exploration of similar geological conditions in this area. Based on the geological prospecting results of the Bamaoshan copper mine,the regional metallogenic geological background,geological characteristics of the mining area and deposits,deposit genesis are discussed in depth,it is show that the Bamaoshan copper deposit is belongs to the porphyry copper deposit type. Based on the above analysis results,the prospecting indicators of the mining area are summarized systematically to provide some reference for the further prospecting work in the mining area.