滇东北巧家县松梁铅锌矿床地质特征及成矿条件分析  

Geological characteristics and metallogenic geological conditions of the Songliang lead-zinc deposit,northeast of Yunnan

作　　者：李波[1,2,3] 顾晓春 韩润生[3] 文书明[3] 徐国端[4] 曹宇 吴昊 邹国富 盛蕊 

机构地区：[1]云南铜业(集团)有限公司 [2]中国有色金属工业昆明勘察设计研究院,昆明650051 [3]昆明理工大学国土资源工程学院,昆明650093 [4]有色金属矿产地质调查中心,北京100012 [5]华能集团澜沧江水电有限公司,昆明650051

出　　处：《矿产与地质》2012年第1期13-18,67,共7页Mineral Resources and Geology

基　　金：国家自然科学基金项目(40863002);云南铜业集团重点科技项目(20110103);云南铜业集团博士后基金联合资助

摘　　要：巧家松梁铅锌矿床位于小江深断裂和巧家-莲峰大断裂所夹持的"三角地带",矿体产于灯影组中、上段中-厚层硅质白云岩、硅质条带白云岩中。矿体产出严格受构造的控制,F5、F6断裂分别控制着①、②号矿体。矿石矿物简单,主要为闪锌矿、方铅矿和黄铁矿,脉石矿物以白云石为主,次为方解石、石英。文章分析了松梁铅锌矿床的成矿地质特征,认为铅锌成矿的潜力较大,矿床的深部及外围找矿前景良好。在此基础上,总结了成矿预测的标志:上震旦统灯影组强蚀变白云岩、硅质白云岩作为地层岩性标志;NW向压扭性断裂带及其光滑断面是构造标志;白云石化、方解石化等中、低温热液蚀变是地表重要的找矿标志;构造地球化学异常和低电阻、高极化率分别是深部找矿的地球化学和地球物理标志。The Songliang lead-zinc deposit which is located in the Sichuan-Yunnan-Guizhou lead-zinc minerali- zation district, is in control of fault strictly. Ore body hosted in siliceous dolomite of Dengying formation, the No. 1 and No. 2 ore body are respectively controlled by the F5 fault and F6 fault. The mineral composi- tion is simple, only with metallic minerals of sphalerite, galenite and pyrite, gangue minerals of dolomite, calcite and quartz. Metallogenic geological characteristics of Songliang lead-zinc deposit has been analyzed in this paper, it is suggested that this deposit has great metallogenic potential, the prospecting foreground of deep and periphery concealed mineral is well. Based on the study of geological characteristics, siliceous dolo- mite of Dengying formation, NW trending shearing compressional faults with a smooth breaking section, medium-low temperature hydrothermal alteration such as dolomitization and calcitization, tectono-geochem- istry anomalies and low resistance and high polarization, can be used as criteria for ore prospecting.

关 键 词：铅锌矿床 地质特征 成矿条件 找矿标志 滇东北 

分 类 号：P618.42[天文地球—矿床学] P618.43[天文地球—地质学]