四川会东新田金矿矿床地质特征及找矿远景  

Geological Characteristics and Prospecting Perspective of the Xintian Gold Deposit in Huidong County,Sichuan Province,Southwestern China

作　　者：周邦国[1] 王生伟[1] 孙晓明[2,3] 林明[1] 廖震文[1] 郭阳[1] 罗茂金[1] 沈战武[1] 

机构地区：[1]成都地质矿产研究所,四川成都610081 [2]中山大学地球科学系,广东广州510275 [3]中山大学海洋学院,广东广州510275

出　　处：《地质与勘探》2013年第5期872-881,共10页Geology and Exploration

基　　金：中国地质调查局项目(编号:1212010813066;1212010911064)资助

摘　　要：四川会东县新田金矿是本项目组在康滇中东部地区取得的重要找矿成果。在矿产资源调查评价时,已圈定2个铜金矿体,其中K1矿体控制长1200m,平均厚1.88m,矿石平均品位Au 2.53g/t,Cu 0.45%;K2矿体控制长400m,平均厚2.65m,矿石平均品位Au 4.56g/t,Cu 0.74%。初步估算(3341)金属量Au 5218 kg,Cu 1.27万t。本文详细介绍了新田金矿床成矿地质背景、矿床地质特征,通过对控矿因素的研究,认为新田金矿属于构造蚀变岩型金矿床,其成矿时代、矿床成因与紧邻的播卡金矿床类似,受喜山期南北向的韧性剪切带控制。结合区内化探异常成果,提出在新田矿区及外围地区,具有继续寻找同类型矿床的潜力。The Xintian gold deposit in I-Iuidong county, Sichuan province, southwestern China is an important exploration achievement of our project team in the central-east Kangdian area. Two Cu-Au ore bodies were delineated after the survey and evaluation of mineral resources, of which the K1 ore body is 1200m long and 1.88m thick on average with a mean ore grade of 2.53g/t for Au and 0.45% for Cu, and the K2 ore body is 400m long and 2. 65m thick, with an average ore grade of 4.56g/t for Au and 0.74% for Cu. The metal reserve （3341 ） of Au is about 5218 kg and Cu about 12.7 kg ac- cording to preliminary calculations. The mineralized geological background and characteristics of mineral deposits are presented in this paper. The Xintian gold deposit is considered as a gold deposit of the tectonic altered rock type through research on the ore-controlling factors, and its metallogenic epoch and ore genesis are similar to the adjacent Boka gold deposit which is controlled by the ductile shear zone trending north-south. This work suggests that there is a great potential for prospecting gold deposits of the same type in Xintian and adjacent areas.

关 键 词：新田金矿 平顶山组 播卡金矿 汤丹群 会东 

分 类 号：P617[天文地球—矿床学]