| 石再平,赵远由,周国臣,杨仕江,黄忠洪.黔北含铝岩系中锂富集规律[J].矿产勘查,2025,(1):120-128 |
| 黔北含铝岩系中锂富集规律 |
| The enrichment regulation of lithium in aluminum-bearing rock series, northern Guizhou, China |
| 投稿时间：2024-07-17 |
| DOI：10.20008/j.kckc.202501011 |
| 中文关键词: 含铝岩系 锂资源 富集 黔北中图分类号:P622 P577文献标志码:A文章编号:1674-7801(2025)01-0120-09 |
| 英文关键词: aluminum-bearing rock series lithium resources lithium enrichment northern Guizhou |
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| 中文摘要: |
| 二叠系船山统大竹园组为一套富锂的高铝岩石，在黔北地区分布广泛。本文通过对含铝岩系的岩性组合、矿物组成、化学组分的研究，发现锂在含铝岩系的上部相对富集，锂富集于致密状铝土岩或低品位的铝土矿中。锂含量与一水硬铝石含量呈负相关关系，而与绿泥石含量呈正相关关系，表明锂的富集可能与绿泥石黏土矿物的吸附有关。锂集中分布于 Al2O3含量为 30%～50%、Fe2O3含量小于 10%的铝土岩 |
| 英文摘要: |
| The Lower Permian Dazhuyuan Formation widely distributed in the northern part of Guizhou is a setof high aluminum rocks with high lithium concentration. By studying the lithological assemblage, mineral composi.tion, and chemical components of the aluminum-bearing rock series, it was found that lithium is relatively enrichedin the upper part of the aluminum-bearing rock series. The lithium is mainly enriched in the compact bauxite orlow-grade bauxite. The lithium content is negatively correlated with boehmite, and positively correlated with chlo. rite, indicating that the lithium enrichment may be related to the adsorption of chlorite clay minerals. Lithium is con.centrated in bauxite (ore) with 30% to 50% Al2O3 and less than 10% Fe2O3. The aluminum-bearing rock series fromsouth to north can be divided into the weathering-denudation zone, the weathering-transport near-sedimentationzone, and the weathering-transport far-sedimentation zone. Strong and thorough weathering oxidation effects, aswell as weak weathering oxidation effects, are both unfavorable for lithium enrichment. Lithium enrichment oc.curred after source rocks of the aluminum-bearing rock series underwent strong weathering, and the weathering-transport near-sedimentation zones are prospect areas for lithium exploration. |
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