辽宁西部肖家营子钼矿地球化学找矿模型  

A TENTATIVE DISCUSSION ON THE GEOCHEMICAL PROSPECTING MODEL FOR THE XIAOJIAYINGZI MOLYBDENUM DEPOSIT IN WESTERN LIAONING PROVINCE

作　　者：温德娟 滕寿仁 刘长纯 乌爱军 

机构地区：[1]辽宁省地质矿产调查院,辽宁沈阳110031

出　　处：《物探与化探》2013年第6期998-1002,1007,共6页Geophysical and Geochemical Exploration

基　　金：地质大调查项目"全国矿产资源潜力评价"(1212011121004)

摘　　要：通过对辽宁西部肖家营子钼矿地质矿产特征及所处区域、矿区的地球化学特征分析及总结,初步建成了肖家营子斑岩—矽卡岩型钼矿的地质—地球化学找矿模型:地质条件以出露地层为雾迷山组含燧石条白云岩和含燧石结核白云岩,岩浆活动十分强烈且成矿前断裂构造发育为特征;区域地球化学异常表现为出现Mo、W、Au、Cu、Pb等异常,且各单元素高值区内的浓集中心显著;成矿局部表现为岩体、接触带及地层分布的元素组分分带性显著,且以Mo、W、Cu、Au为近矿指示元素组合。矿床地质—地球化学找矿模型的建立,可以为寻找同类型矿床开展的预测远景区圈定、找矿靶区挑选、资源量估算等工作提供重要依据。According to an analysis and sumarization of the geological,mineral resources and geochemical characteristics of the Xiaojiayingzi molybdenum ore district,the authors tentatively established a geological-geochemical prospecting model for porphyry-skarn type molybdenum ore deposits: the geological conditions are characterized by exposed strata of Wumishan chert bands-bearing dolomite and chert nodule-bearing dolomite,strong magmatic activity,and development of fractures before mineralization; the regional geochemical anomaly finds expression in the anomalies of Mo,W,Au,Cu,Pb and other elements,and each single element has its significant concentration center in the high value region; mineralization is partly expressed as significant zonation of elemental composition among ore body,contact zone and stratigraphic distribution,with Mo,W,Cu,Au serving as near- ore indicator elements combination. The establishment of the geological- geochemical prospecting model provides an important basis for the prospecting for the same type of deposits,the delineation of prospective areas,the selection of prospecting targets and the estimation of resources.

关 键 词：肖家营子钼矿 斑岩-矽卡岩型 地球化学特征 找矿模型 

分 类 号：P632[天文地球—地质矿产勘探]