云南省马厂箐铜钼金多金属矿床地质特征及成矿规律  

Geological Features and Mineralization Rules of the Machangqing Cu-Mo-Au Multiple-Metallic Deposit,Yunnan Province

作　　者：王治华[1] 郭晓东[1] 喻万强[1] 邹依林[1] 徐涛[1] 张勇[1] 

机构地区：[1]武警黄金地质研究所,河北廊坊065000

出　　处：《地质与勘探》2010年第2期214-223,共10页Geology and Exploration

基　　金：973国家重点基础研究发展计划(2009CB421008);武警黄金指挥部专项基金(编号:HJ09-03)资助

摘　　要：马厂箐铜钼金多金属矿床位于云南省祥云、弥渡、大理三市县接壤部位,是金沙江-哀牢山构造带上典型的与喜马拉雅期富碱斑岩有关的矿床之一。富碱斑岩体内发育斑岩型铜钼矿化,岩体与围岩接触带产出接触交代型铜钼矿化,围岩地层中则产出浅成低温热液型金、铅、锌矿化。下奥陶统向阳组一套碎屑岩和下泥盆统康郎组灰岩与铜钼金成矿关系密切。铜钼矿的成矿物质主要来源于地幔或岩浆流体,金矿成矿物质由岩浆和围岩地层共同提供。区内喜马拉雅期的富碱斑岩与铜钼金成矿成矿关系密切,不仅提供了成矿金属物质,而且还提供了成矿流体和成矿动力。伴随马厂箐岩体侵入而形成的一套岩浆侵入接触构造体系是矿区的主要控矿构造。富碱斑岩体与围岩的北接触带和东接触带是铜钼矿找矿的主攻区域;下奥陶统向阳组碎屑岩和下泥盆统康郎组灰岩中构造破碎带,是找金矿的主要方向。The Machangqing multiple-metallic deposit is located in the adjoining area of Dali city,Midu and Xiangyun counties.This deposit is one of the typical deposits associated with the alkaline-rich porphyry in the Jinshajiang-Ailaoshan tectonic belt of the Himalayan epoch.Three kinds of spatial mineralization,porphyry-,contact-metasomatism-Cu-Mo mineralization and epithetrmal-type Au-Pb-Zn mineralization,occur in the body of porphyry on the contact between porphyry and surrounding rocks and in the country-rock strata,respectively.There is close genetic relationship between a series of clastic rocks of Lower Ordovician Xiangyang formation,limestone of Lower Devonian Kanglang formation and Cu-Mo-Au mineralization.The mineralization material of the Cu-Mo deposit was originated from mantle or magmatic fluid,and that of Au is from magma and country rocks.Alkaline-rich porphyry in the Himalayan epoch has a close relationship with the Cu-Mo-Au deposit,providing not only mineralizing material but also ore-forming fluids and mineralization power.The dominant ore-controlling structure in the mining field is contact structure which formed in the process of Machangqing rock intrusion.The northern and eastern contact zones between magmatic rocks and country rocks are the promising areas for Cu-Mo deposit exploration,and structural fragmentation belts in the clastic rocks of Lower Ordovician Xiangyang formation and limestone of Lower Devonian Kanglang formation are the favorable areas for seeking Au deposits.

关 键 词：多金属矿床 成矿规律 成矿物质 控矿构造 云南马厂箐 

分 类 号：P618.65[天文地球—矿床学]