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波龙铜矿床是多龙矿集区继多不杂斑岩铜矿床后发现的又一大型斑岩铜矿床。文章在详细的野外地质编录及室内镜下鉴定基础上,对波龙斑岩矿床蚀变与脉体系统进行系统梳理。结果表明,波龙矿床发育明显的蚀变分带,从深部(或核部)往浅部(或外侧)具有钾化带→黄铁绢英岩化带→泥化叠加黄铁绢英岩化带→角岩化带(或外侧的青磐岩化带)的蚀变分带特征。共识别出M、A、B、D 4种脉体类型,以A、B脉最为发育。与成矿关系密切的主要为钾化带、黄铁绢英岩化带及A、B脉。与国内外典型斑岩矿床蚀变特征相比,波龙矿床蚀变特征总体与“二长岩”模式相似,特征矿物组合与阿根廷Bajo de la Alumbrera矿床,国内驱龙铜矿、多不杂铜矿等都具有相似之处。但波龙矿床从钾化带至黄铁绢英岩化带都大量发育的稀疏-稠密浸染状及脉状磁铁矿是该矿床的独有特色。
The Porong copper deposit is another large-scale porphyry copper deposit discovered in the Duolong ore district following the multi-porphyry copper deposit. Based on the detailed field geology cataloging and indoor microscopic identification, the paper systematically combs the alteration and vein system of the Porong porphyry deposit. The results show that there is a clear alteration zoning in the Bolong deposit, ranging from the deep (or core) to the shallow (or the outer) zone with the potassic → yellow-pyroxenite → muddy superimposed pyrites → hornfels The alteration zoning characteristics of the belt (or outer Qinglian petrified belt). A total of 4 kinds of veins of M, A, B and D were identified, and the most developed were A and B veins. Closely related to metallogeny are potassic belt, pyrites, sericite belt and A and B veins. Compared with the alteration characteristics of typical porphyry deposits at home and abroad, the alteration characteristics of the Bolong deposit are generally similar to those of the “monzonite” model. The characteristic mineral assemblages are similar to those of the Bajo de la Alumbrera deposit in Argentina, Copper and other miscellaneous copper have similarities. However, the sparse-densely disseminated and vein-shaped magnetite with abundant development from the potassic belt to the yellow-ferri-serpentinite zone of the Bolong deposit is the unique feature of this deposit.