CAJ | 학술논문

对云南个旧矿田的典型控矿地带---老卡岩体凹陷带内的矿化特征、岩相学及矿相学特征和流体包裹体进行分析，进一步研究花岗岩凹陷带的成矿机理。研究认为变玄武岩中普遍发育的金云母化是导致变玄武岩型矿床中锡矿化与金属硫化物伴生的原因之一，凹陷带内带所见的金云母化和绢云母化都与成矿有着密切的关系。花岗岩凹陷带的成矿作用经历了花岗岩侵位、花岗岩叠加改造玄武岩内的“矿胚”、花岗岩蚀变、矿化沉淀这四个过程。
대운남개구광전적전형공광지대---로잡암체요함대내적광화특정、암상학급광상학특정화류체포과체진행분석，진일보연구화강암요함대적성광궤리。연구인위변현무암중보편발육적금운모화시도치변현무암형광상중석광화여금속류화물반생적원인지일，요함대내대소견적금운모화화견운모화도여성광유착밀절적관계。화강암요함대적성광작용경력료화강암침위、화강암첩가개조현무암내적“광배”、화강암식변、광화침정저사개과정。
This research deals with the metallogenic mechanism of the depression zone of Laoka granite in the Gej iu tin-polymetallic orefield,Yunnan province based on the analysis of the characteristic of mineralization, mineral and lithological features and fluid inclusions.It is shown that the alteration of widely developed phlogopite in altered basalt is one of the reasons for the association of tin with metal sulfides.Both the alter-ation of phlogopite and sericitization in the granite depression zone have a close relationship with mineraliza-tion.The mineralization of the granite depression zone underwent four processes:granite invasion,overlay and reform of the"ore embryo"in basalt by the granite,granite alteration and ore precipitation.