煤田地质与勘探2020，Vol.48Issue(1)：77-84,8.DOI:10.3969/j.issn.1001-1986.2020.01.011
广西晚二叠世典型聚煤盆地中锂、镓丰度及富集因素
Lithium and gallium abundance and enrichment factors in typical Late Permian coal-accumulating basin in Guangxi
摘要
Abstract
Through systematic sampling and testing of two typical Late Permian coalfields in Fusui and Xian'an, starting with the lithium and gallium abundance of the samples, and combining with the metallogenic geological background of the Late Permian coal-accumulating basin in Guangxi, the factors controlling the enrichment of lithium and gallium in coal are analyzed. The results show that lithium and gallium in coal of both coalfield have certain industrial prospect. Lithium is mainly concentrated in K1 coal seam, carbonaceous mudstone and bauxite section at the bottom of Heshan Formation, while gallium abundance in each lithology at the bottom of Heshan Formation is not significantly different. The intermediate-acid volcanic rocks in the Yunkai paleocontinent and its surrounding areas are the basic source of lithium and gallium in the Late Permian coal measures in Guangxi. The high-aluminium sedimentary rocks at the bottom of the Heshan Formation may be the direct source of lithium and gallium in the K1 coal seam of the Heshan Formation. The migration of gallium between rock bodies is relatively active, so the content level of provenance plays a leading role in many enrichment factors. Besides provenance, lithium enrichment is more obviously influenced by sedimentary environment and later geological processes. The study result provides a scientific basis for the exploration, prediction and comprehensive utilization of lithium and gallium resources in coal measures in Guangxi.关键词
锂/镓/丰度/富集因素/扶绥煤田/贤按煤田/晚二叠世Key words
lithium/gallium/abundance/enrichment factor/Fusui coalfield/Xian'an coalfield/Late Permian分类
天文与地球科学引用本文复制引用
廖家隆,张福强,韦梦蝶,梁兴东..广西晚二叠世典型聚煤盆地中锂、镓丰度及富集因素[J].煤田地质与勘探,2020,48(1):77-84,8.基金项目
中国煤炭地质总局科技项目(ZMKJ-2018-10) （ZMKJ-2018-10）
广西自然科学基金项目(2019GXNSFAA185062) （2019GXNSFAA185062）
