华南地质2025，Vol.41Issue(3)：511-528,18.DOI:10.3969/j.issn.2097-0013.2025.03.004
南岭成矿带香花岭地区鸡脚山超大型锂多金属矿地质特征及找矿启示
Geological Characteristics and Prospecting Implication of the Jijiaoshan Super-large Lithium Polymetallic Deposit in the Xianghualing Area,Nanling Metallogenetic Belt
摘要
Abstract
The Jijiaoshan deposit,located in the central part of the Xianghualing Sn-Li polymetallic ore field within the central segment of the Nanling metallogenic belt,is a newly discovered super-large granite-type lithium polymetallic deposit.The measured and inferred resources total 1.313 million tons of Li2O,along with associated resources of 915,000 tons of Rb2O,34,000 tons of Ta2O5,48,000 tons of Nb2O5,95,000 tons of WO3,and 53,000 tons of Sn.Within the mining area,the Tongtianmiao granite exhibits a vertical lithological sequence from top to bottom as follows:greisen(zone I),zinnwaldite granite(zone II)and lepidolite granite(zone III).Among these,the greisen and zinnwaldite granite(including muscovite granite)in zone I and zone II constitute the main lithium polymetallic ore bodies.In this study,the analysis of major,trace,and rare earth elements(REE)in the greisen,zinnwaldite granite,muscovite granite,and lepidolite granite indicates that all four granite types belong to the high-K calc-alkaline series and are weakly to strongly peraluminous.Trace element characteristics show enrichment in Rb,Th and U and significant depletion in Ba,Sr,Ti and P.The REE patterns exhibit pronounced negative Eu anomalies and a M-type tetrad effect,indicative of highly fractionated granite evolution.With decreasing K/Rb ratios,from greisen to lepidolite granite,the contents of ore-forming elements(Li,Ta,Rb)gradually increase,while the total REE content(∑REE)decreases.The decrease in K/Rb and Zr/Hf ratios,coupled with the obvious REE tetrad effect,could be interpreted as results of interaction between melt and F-rich fluids during the late stage of magmatic evolution.Changes in geochemical conditions likely played a key role in the enrichment and mineralization of Li,Nb,Ta,and other elements in granites in the late stage of magmatic evolution.The combined mineralization features of the granite-hosted lithium polymetallic deposit and the structurally controlled hydrothermal vein-type W-Sn polymetallic mineralization around the pluton in the Jijiaoshan mining area provide important implications for regional exploration of rare matal and W-Sn polymetallic deposits.关键词
锂矿/花岗岩/铁锂云母/鸡脚山矿床/香花岭/南岭成矿带Key words
lithium/granite/zinnwaldite/Jijiaoshan ore deposit/the Xianghualing area/Nanling Metallogenetic Belt分类
地质学引用本文复制引用
陈志强,文春华,侯茂松,胡玉灵,杨齐智,黄文海,黄建中,许以明..南岭成矿带香花岭地区鸡脚山超大型锂多金属矿地质特征及找矿启示[J].华南地质,2025,41(3):511-528,18.基金项目
国家重点研发项目(编号:2023YFC2906405) （编号:2023YFC2906405）
湖南省科技厅重点联合基金(编号:2025JJ804405) （编号:2025JJ804405）
湖南省自然资源厅科技计划项目(编号:湘自资科20230102DZ) （编号:湘自资科20230102DZ）
湖南省地质院科研项目(编号:HNGSTP202462) （编号:HNGSTP202462）
