吉林省舒兰市长安堡钼(铜)矿床成矿岩体地球化学特征及其地质意义  

GEOCHEMICAL CHARACTERISTICS AND GEOLOGICAL IMPLICATION OF THE ORE-FORMING ROCKS OF THE CHANGANPU Mo(-Cu)DEPOSIT IN JILIN PROVINCE

作　　者：张迪[1] 鞠楠[1] 张森[1] 寇林林[1] 顾玉超[1] ZHANG Di JU Nan ZHANG Sen KOU Lin-lin GU Yu-chao(Shenyang Institute of Geology and Mineral Resource, CGS, Shenyang 110034, China)

机构地区：[1]中国地质调查局沈阳地质调查中心(沈阳地质矿产研究所),辽宁沈阳110034

出　　处：《地质与资源》2017年第3期253-259,共7页Geology and Resources

基　　金：中国地质调查局项目"吉黑东部成矿预测及选区研究"(1212011085482);"东北地区铀矿地质调查与选区"(12120113098000)

摘　　要：为查明吉中地区典型斑岩型矿床矿化特征及成矿规律,对长安堡铜钼矿床地质特征和成矿岩体进行了研究.该矿床成矿岩体为黑云母二长花岗岩.岩石主量、微量及稀土元素组成特征为:高硅,全碱含量不高,富钾,Al2O3含量较高,Ti O2含量较低,贫Y和Yb,相对富集大离子亲石元素(LILE)和轻稀土元素(LREE),而高场强元素(HFSE)、重稀土元素含量(RREE)相对较低,具负Eu异常,(La/Yb)N值较高,2件未蚀变样品具有较低的(Rb/La)N值,与我国东北部地区岛弧钙碱性火成岩地球化学特征基本一致.To ascertain the metallogenic characteristics and regularity of the typical porphyry deposits in central Jilin Province,this paper studies the geological characteristics and ore-forming intrusive rocks of the Changanpu Cu-Mo deposit. The geochemical compositions of the metallogenic biotite monzogranite show the characteristics of high silicon,potassium and Al2O3,low total alkali,TiO2,Y and Yb contents,with relative enrichment in LILE and LREE,depletion in HFSE and HREE,negative Eu anomaly and high（La/Yb）Nvalue. Two unaltered samples of biotite monzogranite show relatively low（Rb/La）Nvalues. The characteristics of the rock bodies are similar to those of the island arc calcalkaline igneous rocks in Northeast China.

关 键 词：成矿岩体 地球化学特征 地质意义 吉林省 

分 类 号：P618.65[天文地球—矿床学] P618.41[天文地球—地质学]