摘要
在前人资料的基础上通过野外勘察和室内分析,对老挝国万象省纳勐铜多金属矿床地质背景进行总结,并对从该区采集的矽卡岩样品开展了地球化学特征研究,进而探究该矿床的成因及规律.主要侵入体岩性为黑云母二长花岗岩,地球化学研究表明,过铝质钙碱性花岗岩对成矿有利,Pb、Co、Sn、Mo、Ba等成矿元素可能来源于侵入体,但花岗岩并不是理想的成矿母岩.岩浆岩具有多期的特征,大部分属于I型岛弧花岗岩.岩浆活动具有一定的规律.
By collecting previous documents, analyzing data from field exploration and major/minor elements test, this study summarizes the geological settings of mineralization of Namueng Cu - Polymetallic Ore Deposits in Xaysomboun District Vientiane Province Lao PDR, analyzes the geochemical features of granite and skarn samples collected from the area, and researches into metallogenesis and enrichment rules of Namueng Ore District. The intrusive body are largely made up of biotite adamellite. According to geochemical analysis, peraluminous, ealc - alkali granite are favorable for mineralization. Pb, Co, Sn, Mo, Ba in the ores are likely derived from granite, but the intrusive body might not be the perfect place for metallogenic elements enrichment. Mineralization mainly happened during medium and low temperature type hydrothermal period.
出处
《南方金属》
CAS
2014年第2期18-23,共6页
Southern Metals
