黑龙江铁力兴安一带斑岩型钼矿资源潜力预测  

Metallogenic Prognosis of Porphyry Style Molybdenum Mineralization Potential in Xing'an Area,Tieli City,Heilongjiang Province

作　　者：韩振哲[1,2,3] 赵海玲[1,2] 李娟娟 罗建 张文龙 李文龙 

机构地区：[1]中国地质大学地质过程与矿产资源国家重点实验室,北京100083 [2]中国地质大学岩石圈构造、深部过程及探测技术教育部重点实验室,北京100083 [3]黑龙江省地质调查研究总院齐齐哈尔分院,齐齐哈尔161005

出　　处：《地质与勘探》2009年第3期253-259,共7页Geology and Exploration

基　　金：国家自然科学基金项目(编号:40672088);黑龙江省兴安矿业公司项目(编号:0100000610092)联合资助

摘　　要：黑龙江省铁力市兴安地区发育晚三叠世-早侏罗世的细粒二长花岗斑岩的U—Ph锆石LA—ICPMS年龄为195～201Ma，钼矿（化）体产于斑岩体的顶部或外接触带的中细粒似斑状二长花岗岩中，斑岩体的岩石学、矿化及围岩蚀变、地球化学异常特征，均显示出斑岩型矿床的特征。另外，在花岗质火山-侵入杂岩体中也见钼矿化，其异常模式虽显示出中温火山热液有关的特征，但从区域成矿演化特征来看，可能与晚三叠世-早侏罗世细粒二长花岗斑岩具有统一的构造-岩浆-成矿体系，具“同源不同环境、部位和同位、不同成矿期次”的特征．A number of late Triassic-early Jurassic fine grained monzonitie granite porphyry bodies are distributed in Xing An area of Tie Li City, Heilongjiang Province. The U-Pb isotopic dating of zircon by using LA-ICPMS analysis returned the age of 195-201Ma for these porphyry bodies. , The Mo mineralization are mostly occurred in the top of the porphyry bodies or outer contact zones. The mineralization is of typical porphyry style which is indicated by the features of porphyry lithology, mineralization, alteration and geochemical anomalies： Besides, there is Mo mineralization in granitic volcano-intrusive complexes, which shows some characters of mesothermal style. From the study of regional metallogenical evolution, it is believed that the porphyry and mesothermal mineralization are controlled by the same structure-magmatism-mineralization system, having the character of ＂different environment and space with the same sources, the same ore body with different stages of mineralization＂.

关 键 词：二长花岗斑岩 花岗质火山-侵入杂岩体 斑岩型钼矿 资源潜力预测 

分 类 号：P624[天文地球—地质矿产勘探]