吉林烟筒砬子铂铜矿床矿物特征及成因浅析  

Mineralogy Characteristics and Genetic Analysis of Yantonglazi PGE-Cu Deposit,Jilin Province

作　　者：娄德波[1] 苏尚国[2] 

机构地区：[1]中国地质科学院矿产资源研究所,北京100037 [2]中国地质大学(北京)地球科学与资源学院,北京100083

出　　处：《西北地质》2011年第1期95-104,共10页Northwestern Geology

基　　金：中央公益性科研院所基本科研业务费专项资金项目(K0908);国家自然科学基金项目(41002119)

摘　　要：烟筒砬子矿床是吉林省东部新发现的铂铜矿床之一,其矿床特征国内外研究鲜有提及。通过对吉林省烟筒砬子铂铜矿床的地质特征、矿物学、矿相学以及电子探针分析发现,矿体主要赋存在辉长岩与五道沟群浅变质岩的内接触带,热液交代作用形成的石榴石化辉长岩是其主要赋矿围岩,由此认为热液交代对铂族元素富集成矿起到了决定性作用。Yantonglazi deposit is one of the newly discovered Ni-Cu-PGE sulfide deposits in eastern Jilin province,and its characteristics are seldom mentioned at home and abroad.We analyzed geological features,mineralogy,chalcography,and electron probe of Yantonglazi PGE-Cu deposit,the results indicate that ① the orebody occurs mainly in the inner contact belt between gabbro and the epi-metamorphic rock of Wudaogou group;and ②the wall rock is the garnetized gabbro formed by hydrothermal metasomatism.This article comes to a conclusion that the hydrothermal metasomatism is a crucial factor for metallization.

关 键 词：铂铜矿床 矿物特征 热液成因 烟筒砬子 吉林 

分 类 号：P618.53[天文地球—矿床学] P618.41[天文地球—地质学]