北格陵兰希特伦峡湾铅锌矿研究进展  

New Research Progress on the Citronen Fjord Lead-Zinc Deposit,North Greenland

作　　者：逯文辉[1] 杨永强[1] 赵元艺[2] 

机构地区：[1]中国地质大学,北京100083 [2]中国地质科学院矿产资源研究所国土资源部成矿作用与矿产资源评价重点实验室,北京100037

出　　处：《地质科技情报》2013年第5期33-38,共6页Geological Science and Technology Information

基　　金：中国地质调查局项目"全球巨型成矿带区域构造与成矿地质背景对比研究"(1212011120326);中央地勘基金项目([2011]D3-09)

摘　　要：希特伦峡湾(Citronen Fjord)铅锌矿是处于储量扩展和可行性研究阶段的世界级原生铅锌矿床,也是目前所知世界上最北端的铅锌矿床。希特伦峡湾的褶皱和逆冲断层较发育,矿化区主要有迪斯卡弗里(Discovery)区、比奇(Beach)区和伊斯茹姆(Esrum)区,矿体呈NW-SE走向,主要赋存在晚奥陶世—早志留世泥岩和页岩中,主要的硫化物是黄铁矿、闪锌矿和方铅矿。硫化物δ34S值变化于+7‰^+35‰间(CDT),多数在+10‰^+25‰间,铅同位素具有放射铅成因特征。成矿流体温度在80~160℃之间,属中低温热液型。希特伦峡湾铅锌矿在成因上为喷流沉积型(SEDEX)矿床。格陵兰岛赋存和产出许多铅锌矿,尤其是北格陵兰古生代的富兰克林阶盆地,其东西向延伸超过2 500km,这个未充分开发的盆地将是勘探铅锌矿的优良靶区。The Citronen Fjord lead-zinc deposit, in reserve expansion and feasibility study stage by now, is a world-class protogenesis lead-zinc deposit. It is also known as the most northern lead-zinc deposit in the world. Both folds and thrust faults are well developed in the Citronen Fjord area and the lead-zinc ore deposit is generally a NW--SE striking trend, mineralization zone is mainly located in Discovery Zone, Beach Zone and Esrum Zone. The ore body is hosted by Upper Ordovician-Lower Silurian mudstone and shale, and the main sulphides include pyrite, sphalerite and galena. The δ34S values of sulphide minerals from the Citronen Fjord ore deposit range from ＋ 7‰ to -1- 35‰ （CDT）, with the bulk of analyses in the range from ＋ 10‰ to ＋ 25‰ while the lead isotope has radiogenic characteristic. The ore-forming fluid temperature are in epithermal, ranging from 80℃ to 160℃. The Citronen Fjord lead-zinc deposit is genetically a SEDEX deposit. Lead-zinc resources are abundant in Greenland, and in particular, abundant in the Palaeozoic Franklinian Basin of North Greenland which extends for more than 2,500 km E-W. This under-explored basin is believed to be an excellent target area for lead-zinc exploration in future.

关 键 词：希特伦峡湾 铅锌矿床 同位素特征 成矿流体温度 喷流沉积（SEDEX） 

分 类 号：P618.41[天文地球—矿床学] P618.42[天文地球—地质学]