Provenance of debris in lithium-rich coal seam: A case study of Taiyuan group coal seam in Anjialing Coal Mine, Pingshuo mining area

被引：0

作者：

Cheng X. ^{[1
,3
]}

Sun B. ^{[1
,3
]}

Liu C. ^{[1
,3
]}

Zeng F. ^{[1
,3
]}

Xie X. ^{[2
,3
]}

Chang X. ^{[1
,3
]}

机构：

[1] Department of Earth Science and Engineering, Taiyuan University of Technology, Taiyuan

[2] Institute of Geology and Mineral Resources of Shanxi Province, Taiyuan

[3] Shanxi Key Laboratory of Coal and Coal Measure Gas Geology, Taiyuan University of Technology, Taiyuan

来源：

Meitan Xuebao/Journal of the China Coal Society | 2021年 / 46卷 / 07期

关键词：

Anjialing Coal Mine; Geochemical characteristics; Lithium-rich coal seam; Pingshuo mining area; Provenance;

D O I：

10.13225/j.cnki.jccs.2021.0071

中图分类号：

学科分类号：

摘要：

The enrichment of beneficial elements such as Li and Al in the Taiyuan Formation of Anjialing coal mine, Pingshuo mining area, are mainly affected by terrigenous clastics.In order to clarify the prove-nance, thin section, ICP-OES and ICP-MS were used to analyze the petrological and geochemical charac-teristics of roof, floor and gangue of No.4, 8, 9 and 11 coals.The petrological results show that the clastic components in the samples are mainly quartz and rock debris, the content of miscellaneous bases is low, and the type of cementation is mainly calcareous cement.Geochemical results show that the main components of the samples are SiO2 and Al2O3, and the content of other elements is relatively low.The enrichment coefficient of the trace element Li in the roof and floor and the gangue of each coal seam varies greatly.Among them, the No.11 coal seam sample has the highest concentration of Li, the No.9 coal seam sample is relatively enriched, and the No.8 coal seam sample is relatively depleted, in the 3 samples of No.4 coal seam, only the gangue sample is enriched, and the roof and floor samples are not enriched.The remaining trace elements relatively enriched are Th, Hf, Zr, and Nb, while Co, Sc, Cr, Ni, V, Rb, Cs, and Ga are relatively depleted.According to geochemical parameters, such as element ratios and SiO2-TiO2, Hf-La/Th, ∑REE-La/Yb, Dickinson diagrams and DF(A-P)MT diagrams, combined with the regional geological background, they are interpreted that the debris in the Li-rich and non-Li coal seams in the study area are mainly originated from the Inner Mongolia uplift of the northern margin, North China.The source rock types of the roof, floor and gangue samples are mainly felsic igneous rocks.Compared with the roof, floor, and gangue of the Li-rich samples, there are more sedimentary rocks debris in the source rock of the non-Li coal seam. © 2021, Editorial Office of Journal of China Coal Society. All right reserved.

引用

页码：2346 / 2359

页数：13

共 47 条

[1]

LIU Dongna, ZENG Fangui, ZHAO Fenghua, Et al., Status and prospect of research for three type coal-associated rare earth resources in coal measures in Shanxi Province, Coal Geology and Exploration, 46, 4, pp. 1-7, (2018)

[2]

LIU Bangjun, LIN Mingyue, CHU Guangchen, Distribution law and enrichment mechanism of Ga in No.4 coal seam in Pingshuo mining area in Shanxi Province, China Coal, 40, 11, pp. 25-29, (2014)

[3]

YI Shu, WANG Jinxi, Lithium occurrences and enrichment factors law in No.9 coal seam of Anjialing Mine, Coal and Chemical Industry, 37, 9, pp. 7-10, (2014)

[4]

SUN Yuzhuang, ZHAO Cunliang, ZHANG Jianya, Et al., Concentrations of valuable elements of the coals from the Pingshuo Mining District, Ningwu Coalfield, Northern China, Energy Exploration, 31, 5, pp. 727-744, (2013)

[5]

LIU Weiyang, FAN Jingsen, WANG Jinxi, Et al., Study on geochemical characteristics of rare earth elements from coal in Ningwu coalfield, Coal Science and Technology, 48, 4, pp. 237-245, (2020)

[6]

WANG Jinxi, Sedimentary control of Lithium enrichment in Permo-Carboniferous coals from Ningwu basin, Shanxi, China, pp. 33-110, (2019)

[7]

LIU Bangjun, WANG Junyan, HE Hongtao, Et al., Geochemistry of carboniferous coals from the Laoyaogou mine, Ningwu coalfield, Shanxi Province, northern China: Emphasis on the enrichment of valuable elements, Fuel, 279, (2020)

[8]

LI Hongyan, XU Yigang, HUANG Xiaolong, Et al., Activation of northern margin of the north China craton in late Paleozoic: Evidence from U-Pb dating and Hf isotopes of detrital zircons from the upper carboniferous Taiyuan formation in the Ningwu-Jingle Basin, Chinese Science Bulletin, 54, 5, pp. 632-640, (2009)

[9]

ZOU Yu, Mesozoic sedimentary-Tectonic evolution and its Late eeformation in Ningwu-Jingle Basin, pp. 7-16, (2017)

[10]

LI Zhenhong, DONG Shuwen, QU Hongjie, Et al., Geochemistry of jurassic detrital rocks and geological significance in Ningwu Jingle Basin, Geological Review, 59, 4, pp. 637-655, (2013)

← 1 2 3 4 5 →