湖南香花岭矿田中细晶岩型锂矿资源找矿潜力分析  

Prospecting potential of medium-fine-grained rock-type lithium resources in the Xianghualing orefield,Hunan Province,China

作　　者：宋之方 杨齐智 朱真真 曹能文 SONG Zhi-Fang;YANG Qi-Zhi;ZHU Zhen-Zhen;CAO Neng-Wen(Mineral Resources Investigation Institute of Hunan Province,Changsha410129,China;State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing100029,China)

机构地区：[1]湖南省矿产资源调查所,湖南长沙410129 [2]中国科学院地质与地球物理研究所岩石圈演化国家重点实验室,北京100029

出　　处：《物探与化探》2024年第2期366-374,共9页Geophysical and Geochemical Exploration

基　　金：湖南省自然资源厅重点项目“湖南省临武县香花岭地区锂矿资源靶区优选勘查”(2022010)。

摘　　要：为探究锂元素在中细晶岩中的分布特征和赋存规律,及与钨、锡、铌、钽、铍、铷等矿产的共伴生关系,对香花岭矿田有色—稀有金属的分布特征和成岩成矿过程进行了分析研究。以出露的花岗岩岩体为中心划分出了癞子岭—南吉冲、尖峰岭—香花铺、通天庙—瑶山里等3个稀有金属锂的成矿区段,且已在癞子岭—南吉冲和尖峰岭—香花铺成矿区段的中细晶岩中发现有富锂矿化体赋存。锂元素在中细晶花岗质岩体的内部、顶部及高侵位岩枝、岩脉前锋部位和边缘相等处的自变质蚀变作用部位,或在与富含硅质的围岩体接触带处的富硅石英脉封闭的区域中汇聚并富集成矿,划分这些矿化蚀变地段是香花岭矿田探获中细晶岩型锂矿体的一个重要思路。This study aims to explore the distribution characteristics and occurrence patterns of lithium in medium-fine-grained rocks and its paragenetic or associated relationship with minerals such as tungsten,tin,niobium,tantalum,beryllium,and rubidium.Hence,it analyzed the distribution characteristics and diagenetic and metallogenic processes of nonferrous-rare metals in the Xianghualing orefield.With the exposed granitic rock masses as the center,this study divided three ore-forming sections of rare metal lithium,i.e.,the Laiziling-Nanjichong,Jianfengling-Xianghuapu,and Tongtianmiao-Yaoshanli ore-forming sections.Moreover,lithium-rich mineralized bodies were discovered in the medium-fine-grained rocks of the former two ore-forming sections.Lithium converges and accumulates in the interior and top of medium-fine-grained granitic rock masses,at the automorphism and alteration positions of high-emplacement apophyses and vein fronts and edges,or in the areas enclosed by silicon-rich quartz veins at the contact zone with silicon-rich surrounding rocks.Dividing these mineralization and alteration sections serves as a crucial approach for exploring medium-fine-grained rock type lithium ore bodies in the Xianghualing orefield.

关 键 词：中细晶岩型 稀有金属 锂矿资源 找矿潜力分析 香花岭矿田 

分 类 号：P612[天文地球—矿床学] P618[天文地球—地质学]