青海大柴旦镇尕日力根砾岩型金矿成矿特征研究  

Metallogenic characteristics of the Gariligen conglomerate type gold deposit in Dachaidan Town,Qinghai Province

作　　者：童海奎 龙灵利[2,3] 马永胜 仓索南尖措 吴鸿梅 TONG Haikui;LONG Lingli;MA Yongsheng;CANG Suonanjiancuo;WU Hongmei(Geological Survey Bureau of Qinghai Province,Xining 810001,Qinghai,China;Beijing Institute of Geology for Mineral Resources Co.,Ltd.,Beijing 100012,China;Technic Research Center for Deep Resources Exploration in Non-ferrous Metal Mines,Beijing 100012,China;The Fourth Institute of Geology Exploration of Qinghai Province,Xining 810001,Qinghai,China)

机构地区：[1]青海省地质调查局,青海西宁810001 [2]北京矿产地质研究院有限责任公司,北京100012 [3]有色金属矿山深部资源勘查工程技术研究中心,北京100012 [4]青海省第四地质勘查院,青海西宁810001

出　　处：《矿产勘查》2021年第3期534-541,共8页Mineral Exploration

基　　金：青海省省级财政资金地质项目(编号:2019048001ky001)资助。

摘　　要：位于青海大柴旦镇境内的尕日力根金矿床是青海境内发现的砾岩型金矿床。其矿体主要赋存在下-中二叠统勒门沟组砾岩夹薄层砂岩中,矿体主要呈似层状、透镜状,且受地层控制明显;金主要富集在含矿砾岩的胶结物中,重砂实验中发现了原始砂金。矿区还发育辉锑矿脉、含金黄铁矿脉,石英中流体包裹体低盐度(4.01%~10.74%)、中低温(169.8~256.3℃)的特征均暗示研究区可能存在后期热液的扰动。该矿床成矿可划分为沉积成矿阶段和热液成矿阶段,其属于沉积成矿和热液叠加成矿复合成因。The Gariligen gold deposit located in Dachaidan Town,Qinghai Province,is the first conglomerate gold deposit discovered in Qinghai Province. The orebodies of the Gariligen deposit are mainly hosted in conglomerate alternating with thin sandstone of the Early-Middle Permian Lemengou Formation,and controlled by strata. The ore bodies assume stratoid and lenticular forms. Gold mineralization is mostly concentrated in the cement of the ore-forming conglomerate. The original placer gold was found in the heavymineral analysis of this deposit. The stibnite veins and auriferous pyrite veins developed in the mining area,and the fluid inclusions in quartz veins with low salinity( 4.01% ~ 10.74%),middle-low temperature( 169.8 ~ 256.3℃) suggested this deposit was affected by late hydrothermal disturbance. The mineralization of the deposit can be divided into sedimentary stage and hydrothermal stage. It belongs to the composite metallogenesis of sedimentary mineralization and hydrothermal superimposition.

关 键 词：砾岩型金矿 地质特征 矿床成因 尕日力根 青海 

分 类 号：P618.51[天文地球—矿床学]