云南新平县大红山铜矿床Ⅰ号矿带成矿模式探讨  

A PROBE INTO THE METALLOGENESIS MODEL OF METALLOGENETIC ZONE 1 OF DAHONGSHAN CU DEPOSIT IN XINPING,YUNNAN

作　　者：沈忠义 韩艳伟 王崇军 

机构地区：[1]中国有色金属工业昆明勘察设计研究院,云南昆明650051

出　　处：《云南地质》2017年第2期214-220,共7页Yunnan Geology

摘　　要：大红山铜矿床Ⅰ号矿带赋存于曼岗河组第三岩性段内,含铜岩石主要为火山碎屑沉积变质的变钠质凝灰岩、钠长黑云片岩和火山喷流沉积的电气石硅质岩。含矿层岩性水平分带特征明显,由北向南可分为火山喷出岩相带→火山碎屑沉积岩相带→正常碎屑沉积岩相带,铜矿化与火山碎屑沉积岩相带关系密切。曼岗河上旋回酸性火山喷发及其碎屑沉积是该矿带形成的主导因素,3期火山喷发—沉积旋回分别形成了矿带内的3个主要铜矿体群初始矿层,后经区域热变质作用进一步富集成矿。The metallogenesis zone 1 of Dahongshan Cu deposit is in Manganghe Formation 3rdlithologic member. The Cu-bearing rock is mainly the meta-soda tuff,albite biotite schist and exhalative sedimentary tourmaline silicolites of pyroclast sedimentation metamorphism. The horizontal zonation of ore-bearing bed is clear,which can be divided into the volcanic effusive rock facies zone→pyroclast rock facies zone→normal clastic sedimentary rock facies zone from N to S. The Cu metallogenesis is in close relation to the pyroclast rock facies zone. Manganghe upper cycle acid volcanic effusive and pyroclast are the principal factor of the formation of this metallogenesis zone.The 3 volcanic effusive—sedimentation cycles form separately the primitive ore bedof 3 principal Cu ore body groups,then the further metallogenesis and concentration is in the regional thermal metamorphism.

关 键 词：火山沉积矿床 成矿模式 云南大红山 

分 类 号：P611[天文地球—矿床学]