摘要
花岗伟晶岩型锂矿是锂资源的重要矿产类型,目前随着勘查程度的提高,发现地表出露的伟晶岩型锂矿资源的几率越来越小,下一步的勘查重点应放到找寻隐伏型锂矿资源。近年来,深穿透地球化学勘查手段在隐伏矿勘查中发挥了重要作用。其中土壤微细粒分离测量技术能有效探测深部异常信息,已在多种景观覆盖区进行了试验,并取得了显著的效果。本文以四川甲基卡X03号隐伏锂矿脉为研究对象,利用土壤微细粒分离测量技术,开展深穿透地球化学勘查技术对隐伏锂矿脉探测的试验研究,并分析了成矿及伴生元素组合特征,结果表明:Li、Be、Rb、Cs、Sn、Nb、Ta、Bi、Pb、U等元素具有较好的相关性,富集程度高,异常明显,异常峰值显著;其中,Li-Be-Bi-Cs-Rb-Pb-U元素组合与研究区X03号矿脉成矿元素组合具有良好的耦合性;利用土壤微细粒分离测量技术取得的元素高异常范围与已知隐伏矿体具有较好的对应关系,可以将上述元素作为该区域寻找锂矿的指示元素。以上结果证实了深穿透地球化学勘查技术能有效指示深部隐伏锂矿体,可以将深穿透地球化学勘查技术应用于西部高寒山区景观覆盖区地球化学找矿勘查中。
The granitic pegmatite type lithium deposit is an important type of lithium resource. At present with increased exploration, the chances of finding pegmatite-type lithium deposits on the surface are becoming scarce. The next step in exploration should focus on concealed lithium resources. Deep-penetrating geochemical exploration has played an important role in concealed ore exploration in recent years. Among them, fine-grained soil prospecting method can effectively detect anomalous information indicating deep concealed mines, which has been tested in a variety of landscape covered areas and achieved remarkable results. In this paper, we took Jiajika X03 concealed lithium vein in Sichuan Province as the research object, and used fine-grained soil prospecting method to carry out the experimental study on the detection of concealed lithium vein by deep-penetrating geochemical exploration technology, and analyzed the characteristics of mineralization and associated elements combination. The results show that Li, Be, Rb, Cs, Sn, Nb, Ta, Bi, Pb and U are characterized by good correlation and high enrichment. Among them, the Li-Be-Bi-Cs-Rb-Pb-U association is consistent with the ore-forming element combination of X03 vein in the study area. The high anomaly range of elements obtained by fine-grained soil prospecting method has a good correspondence with the known concealed ore bodies, and consequently the elements associations can be used as indicators of lithium explorations in this area. The above results confirm that deep penetration geochemical exploration technology can effectively indicate deep concealed lithium ore bodies and can be applied to geochemical exploration in landscape covered area of western alpine mountains.
作者
鲁岳鑫
张必敏
刘汉粮
迟清华
窦备
刘福田
王强
谢明君
呼延钰莹
LU Yuexin;ZHANG Bimin;LIU Hanliang;CHI Qinghua;DOU Bei;LIU Futian;WANG Qiang;XIE Mingjun;HUYAN Yuying(Key Laboratory of Geochemical Exploration,Institute of Geophysical and Geochemical Exploration,Langfang,Hebei 065000,China;UNESCO International Center on Global-Scale Geochemistry,Langfang,Hebei 065000,China;School of Earth Science and Resources,Chang'an University,Xi'an,Shaanxi 710054,China)
出处
《地质学报》
EI
CAS
CSCD
北大核心
2023年第1期291-305,共15页
Acta Geologica Sinica
基金
国家自然科学基金项目(编号41573044)
国家重点研发计划项目(编号2016YFC0600600)
应用地球化学领域国家重点实验室培育基地建设项目(编号JYYWF201834)联合资助的成果。
