丹平铝土矿(中国贵州北部)及伴生锂的成因:含铝矿物的 LA-ICP-MS 分析证据

IF 3.4 2区 地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS Journal of Geochemical Exploration Pub Date : 2024-04-11 DOI:10.1016/j.gexplo.2024.107464
Bing Liu , Peiwen Chen , Tianshun Wang , Guotao Sun , Mingfei Duan , Kejun Hou , Qingdong Zeng , Yong Fu
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引用次数: 0

摘要

锂(Li)作为绿色新能源技术的重要元素,是一种全球性战略资源。沉积锂主要与铝土矿伴生,局部品位达 1000 ppm,具有巨大的利用前景。然而,细小的颗粒限制了对锂存在的研究。位于中国贵州北部的丹平铝土矿床伴生着大量的锂资源。本研究采用激光烧蚀-电感耦合等离子体质谱法进行了原位元素浓度分析。分析结果表明,锂主要富集在含铝岩系的底部和顶部,且顶部的锂含量较高(615.98-3289.98 ppm)。锂含量与镁和铁含量呈正相关,表明绿泥石是一种潜在的含锂矿物。钾含量为 10000 ppm,钾含量与锂含量呈正相关,表明伊利石也可能是一种含锂矿物。由蒙脱石转化而来的高岭石也可能具有较高的锂含量。镓含量始终与铝含量呈正相关,表明镓主要存在于透辉石中。铝土矿的 Nb/Ta 和 Zr/Hf 比值与下伏韩家店地层页岩相似,且具有相同的正 Ce 异常(黄龙地层为负异常),表明丹平的成矿物质主要来自下伏韩家店地层。
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Genesis of Danping bauxite (Northern Guizhou, China) and associated lithium: Evidence from LA-ICP-MS analysis of Al-bearing minerals

Lithium (Li), as an essential element of green new energy technology, is a global strategic resource. Sedimentary Li is primarily associated with bauxite, with a local grade of >1000 ppm, and has a huge utilization prospect. However, fine particles limit the study of the occurrence of Li. The Danping bauxite deposit, located in northern Guizhou, China, which accompanying considerable Li resources. In this study, in situ elemental concentration analyses were conducted by laser ablation-inductively coupled plasma-mass spectrometry. The analysis results show that Li is mainly enriched at the bottom and top of the aluminiferous rock series, and the Li content at the top is higher (615.98–3289.98 ppm). Li content is positively correlated with Mg and Fe content, indicating that chlorite is a potential Li-bearing mineral. K content of <10,000 ppm, K content is positively correlated with Li content, indicating that illite may also be a Li-bearing mineral. Kaolinite, transformed from montmorillonite, may also have a high Li content. Ga content is always positively correlated with Al content, indicating that Ga mainly occurs in diaspores. Bauxite has similar Nb/Ta and Zr/Hf ratios to the underlying Hanjiadian Formation shale, as well as the same positive Ce anomalies (negative anomalies in Huanglong Formation), indicating that the ore-forming material of Danping is primarily derived from the underlying Hanjiadian Formation.

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来源期刊
Journal of Geochemical Exploration
Journal of Geochemical Exploration 地学-地球化学与地球物理
CiteScore
7.40
自引率
7.70%
发文量
148
审稿时长
8.1 months
期刊介绍: Journal of Geochemical Exploration is mostly dedicated to publication of original studies in exploration and environmental geochemistry and related topics. Contributions considered of prevalent interest for the journal include researches based on the application of innovative methods to: define the genesis and the evolution of mineral deposits including transfer of elements in large-scale mineralized areas. analyze complex systems at the boundaries between bio-geochemistry, metal transport and mineral accumulation. evaluate effects of historical mining activities on the surface environment. trace pollutant sources and define their fate and transport models in the near-surface and surface environments involving solid, fluid and aerial matrices. assess and quantify natural and technogenic radioactivity in the environment. determine geochemical anomalies and set baseline reference values using compositional data analysis, multivariate statistics and geo-spatial analysis. assess the impacts of anthropogenic contamination on ecosystems and human health at local and regional scale to prioritize and classify risks through deterministic and stochastic approaches. Papers dedicated to the presentation of newly developed methods in analytical geochemistry to be applied in the field or in laboratory are also within the topics of interest for the journal.
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