青海兴海县某银铅矿床地质特征、成矿模式及找矿意义  

Geological characteristics and metallogenetic model of a silver lead deposit in Xinghai County,Qinghai and the exploration significance

作　　者：王小刚 刘松柏 杜武刚 WANG Xiaogang;LIU Songbai;DU Wugang(Regional Geological Survey Academe of Shaanxi Geology and Mining Group Co.,Ltd.,Xianyang 712000,Shaanxi,China;Shaanxi Geological and Mineral Third Team Co.,Ltd.,Baoji 721000,Shaanxi,China)

机构地区：[1]陕西地矿区研院有限公司,陕西咸阳712000 [2]陕西地矿第三地质队有限公司,陕西宝鸡721000

出　　处：《矿产与地质》2025年第1期56-64,共9页Mineral Resources and Geology

摘　　要：青海省兴海县某银铅矿区发现铅锌矿化构造蚀变带多条,长百余米至上千米,宽几米至几十米。初步圈出银铅(锌)、铅、金矿体10余条,以银铅矿为主,矿体长50~650 m,平均厚0.9~1.65 m;Ag平均品位47.15×10^(-6)~225.59×10^(-6),最高1720×10^(-6);Pb平均品位0.39%~5.74%,最高22.7%;Zn平均品位0.24%~2.78%。矿(化)带(体)主要受断裂构造控制,初步将该银铅矿划分为岩浆期后热液+构造叠加改造期和表生氧化期两个主成矿期。对K5主矿体进行了找矿预测和工程验证,主矿体找矿预测效果显著。最后,文章探讨了该银铅多金属矿的成矿模式及找矿意义。Multiple lead zinc mineralization structural alteration zones have been discovered in a silver lead mining area in Xinghai County,Qinghai Province,with a length of over a hundred meters to about one kilometer and a width of several meters to tens of meters.More than 10 silver lead(zinc),lead,and gold ore bodies have been preliminarily identified,and silver lead orebodies are the main type.The ore body is 50-650 meters long and has an average thickness of 0.9-1.65 meters.The average grade of Ag is 47.15×10^(-6)-225.59×10^(-6),with a maximum of 1720×10^(-6).The average grade of Pb is 0.39%-5.74%,with the highest being 22.7%.The average grade of Zn is 0.24%to 2.78%.The mineralization zone(body)is mainly controlled by fault structures.The silver lead deposit is preliminarily divided into two main mineralization periods,the post magmatic hydrothermal+structural superimposed transformation period and the surface oxidation period.Prospecting and engineering verification are conducted on the K5 main ore body,and the prospecting prediction effect of the main orebody is significant.Explored the ore-forming model and prospecting significance of silver lead polymetallic deposits.Finally,the paper explores for the mineralization model and prospecting significance of the silver lead polymetallic deposit.

关 键 词：银铅锌矿 地质特征 成矿模式 找矿意义 青海兴海 

分 类 号：P618.42[天文地球—矿床学] P618.52[天文地球—地质学]