龙首山地区芨岭矿床地质背景及地球化学特征分析

Analysis of geological background and geochemical characteristics of the Yuling deposit in the Longshoushan area

龙首山地区芨岭矿体多为金属矿化带,矿化信息丰富,已经探明多个矿床与大量的矿化点,在阐述芨岭矿床成矿地质背景及矿体特征、地质矿物形成条件、矿物质矿化特征基础上,结合龙首山地区矿床地球化学研究成果,矿物蚀变作用是一个去Si、K,增Na、Fe、Mg、Mn、Ca、Al的过程;微量元素分析表明蚀变地质矿物为磷亏损型,可能来自于亏损地幔源,地球化学分析也显示了明显的钠交代作用。

The Qinling ore bodies in Longshou Mountain area are mostly metal mineralization belts with abundant mineralization information.Many ore deposits and mineralization points have been identified.Based on the description of the geological background and ore body characteristics,geological mineral forming conditions and mineral mineralization characteristics of the Qinling ore deposit,combined with the results of geochemical research of the deposits in Longshou Mountain area,minerals are discussed.Alteration is a process of removing Si,K and increasing Na,Fe,Mg,Mn,Ca and Al.Trace element analysis shows that the altered geological minerals are phosphorus deficient,possibly from depleted mantle sources.Geochemical analysis also shows obvious sodium metasomatism.