西秦岭温泉钼矿床矿化特征与蚀变分带  

Mineralization characteristics and alteration zoning of Wenquan molybdenum deposit in West Qinling

作　　者：周俊烈[1] 韩海涛[2,3] 

机构地区：[1]甘肃有色地质勘查局天水总队,甘肃天水741025 [2]中南大学地学与环境工程学院,长沙410083 [3]甘肃省有色地质调查院,兰州730000

出　　处：《世界地质》2010年第2期248-255,共8页World Geology

基　　金：甘肃北秦岭温泉及其外围铜钼矿调查评价(1212010631006)

摘　　要：西秦岭温泉斑岩型钼矿位于北秦岭加里东褶皱带西北。经光片及薄片鉴定、X--衍射分析、岩矿石化学全分析和稀土元素分析等研究,石英脉中的辉钼矿化、黄铁矿化及黄铜矿化是矿床的主要矿化;围岩蚀变主要是硅化、沸石化及红色泥化。根据矿床地质、围岩蚀变和地球化学特征等,将围岩蚀变分为3个带,即砖红色沸石化蚀变带(Ⅰ)、强硅化蚀变带(Ⅱ)和弱硅化蚀变带(Ⅲ),其中Ⅰ、Ⅱ带为主要找矿标志。Wenquan porphyry molybdenum deposit of West Qinling is located in northwestern Caledonian fold belt of North Qinling. The identification of polished section and slides,X--diffraction analysis,chemical total analysis of rocks and minerals and REE analysis show that molybdenite,pyrite and chalcopyrite mineralizations in quartz vein are the main types of mineralization in the deposit; while silicification,laumontite and red argillation are the main types of wall-rock alteration. According to the characteristics of deposit geology,wall-rock alteration and geochemistry,the wall-rock alteration can be divided into three zones,including brick red zeolitization （gradeⅠ）, strong silification （gradeⅡ） and weak silification （gradeⅢ）,in which the gradeⅠand Ⅱ zones are the main indicators for prospecting.

关 键 词：温泉斑岩型钼矿 矿化特征 围岩蚀变 找矿标志 西秦岭 

分 类 号：P614[天文地球—矿床学] P618.65[天文地球—地质学]