青海蓄集铅(银)多金属矿床地质特征及成矿物质来源浅析
Primary analysis of geological characteristics and material source of Xuji Pb(Ag)poly metallic deposit in Qinghai province
李泽仁 1王利文 1水应东 1何学昭 1赵生辉1
作者信息
- 1. 青海省核工业放射性地质勘查院,西宁 810016
- 折叠
摘要
青海蓄集铅(银)矿区地处宗务隆山中段.本研究主要在前人对蓄集铅(银)矿区地质背景及矿床地质特征研究的基础上,从区域成矿地质背景分析入手,查明矿区出露地层为土尔根大坂组,矿床含矿岩系岩性有灰岩夹钙质绢云千枚岩、薄层状灰岩、厚层块状灰岩、绢云石英千枚岩等.矿体多呈层状,总体受EW向断裂控制.矿石的结构以它形粒状结构、半自形结构为主,主要构造为稀疏-稠密浸染状构造.金属矿物主要为方铅矿,脉石矿物主要为石英和方解石.通过矿床地质地球化学特征分析,推断矿区薄层状灰岩、角砾状灰岩、绢云千枚岩及底部岩体为该区多金属成矿提供了重要的物质来源.
Abstract
Xuji Pb(Ag)polymetallic deposit is located at the middle of Zongwulong mountain area.Based on the previous results this paper deals with regional geological background of the deposit.Tuergendaban formation is exposed in the area.The ore is hosted in limestone intercalated with calcareous sericite phl-lite,thin layered limestone,thick massive limestone,sericite-quartz phllite.Ore bodies are generally lay-ered and controlled by EW faults and the ore is with anhedral and semi-Herald texture and sparse-dense deseminated structure.Galena is the main metal mineral,and quartz and calcium gangue minerals.In-ferred by geological and geochemical characteristics of the deposit thin layered limestone,brecciated lime-stone,sericite phllite and rock bodies beneath provide ore materials for the deposit.
关键词
蓄集铅(银)多金属矿床/矿床地质特征/成矿物质来源/青海Key words
Xuji Pb(Ag)poly metallic deposit/geological characteristics of the deposit/ore material source/Qinghai province引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据