Features of the inorganic components of a Middle Jurassic coal from the Haiwan mine, Shenfu mining area, Ordos Basin, northern China: Emphasis on origins of sub-micron and micron-sized quartz

IF 3.2 2区 地球科学 Q1 GEOLOGY
Niande Shang , Jingjing Liu , Shifeng Dai , Ian T. Graham , David French , Qiuchan Han , Mengda Yao , Rongkun Jia , Yan Wang
{"title":"Features of the inorganic components of a Middle Jurassic coal from the Haiwan mine, Shenfu mining area, Ordos Basin, northern China: Emphasis on origins of sub-micron and micron-sized quartz","authors":"Niande Shang ,&nbsp;Jingjing Liu ,&nbsp;Shifeng Dai ,&nbsp;Ian T. Graham ,&nbsp;David French ,&nbsp;Qiuchan Han ,&nbsp;Mengda Yao ,&nbsp;Rongkun Jia ,&nbsp;Yan Wang","doi":"10.1016/j.oregeorev.2025.106620","DOIUrl":null,"url":null,"abstract":"<div><div>Fine quartz particles released by coal mining and combustion can be detrimental to human health, potentially causing permanent lung damage and even death. Therefore, research on the particle size distribution, modes of occurrence, and formation mechanisms of quartz in coal is essential for guiding safe and efficient coal mining as well as the safe utilization of coal resources. In this study, multiple analytical methods, including X-ray fluorescence, inductively-coupled-plasma − mass spectrometry, quantitative X-ray diffraction, optical microscopy, and scanning electron microscopy, were employed to determine the geochemical and mineralogical features of coal from the Haiwan mine located in the Ordos Basin, China. The Haiwan coal is a bituminous coal with low ash, low sulfur, and high volatile content. The inorganic constituents in the coals were derived from intermediate and felsic rocks of the Yinshan Orogenic Belt, as well as from multiple stages of authigenesis and fluid injections. Notably, quartz constitutes a high proportion of the low-temperature ashes of the coal, with an average proportion of 42.8 %. Authigenic quartz primarily occurs in the form of aggregates of sub-micron to micron-sized particles, typically closely coexisting with kaolinite and boehmite. This mineral assemblage resulted from precipitation of Si-rich solutions leached from the lithologies of the provenance area, along with the dissolution of terrigenous detrital feldspars and desiliconization of kaolinite. Most of the authigenic quartz particles (&lt;10 µm) with sharp edges in the coals, which are small enough to easily enter the respiratory tract, might do harm to lung tissue. Therefore, although the contents of SiO<sub>2</sub> (4.5 %) and quartz (5.41 %) are low on a whole coal basis, prolonged inhalation of these quartz particles may still pose health risks to humans, especially from the combustion products (i.e., coal ash) which contain much higher proportions of quartz.</div></div>","PeriodicalId":19644,"journal":{"name":"Ore Geology Reviews","volume":"181 ","pages":"Article 106620"},"PeriodicalIF":3.2000,"publicationDate":"2025-04-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ore Geology Reviews","FirstCategoryId":"89","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0169136825001805","RegionNum":2,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"GEOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Fine quartz particles released by coal mining and combustion can be detrimental to human health, potentially causing permanent lung damage and even death. Therefore, research on the particle size distribution, modes of occurrence, and formation mechanisms of quartz in coal is essential for guiding safe and efficient coal mining as well as the safe utilization of coal resources. In this study, multiple analytical methods, including X-ray fluorescence, inductively-coupled-plasma − mass spectrometry, quantitative X-ray diffraction, optical microscopy, and scanning electron microscopy, were employed to determine the geochemical and mineralogical features of coal from the Haiwan mine located in the Ordos Basin, China. The Haiwan coal is a bituminous coal with low ash, low sulfur, and high volatile content. The inorganic constituents in the coals were derived from intermediate and felsic rocks of the Yinshan Orogenic Belt, as well as from multiple stages of authigenesis and fluid injections. Notably, quartz constitutes a high proportion of the low-temperature ashes of the coal, with an average proportion of 42.8 %. Authigenic quartz primarily occurs in the form of aggregates of sub-micron to micron-sized particles, typically closely coexisting with kaolinite and boehmite. This mineral assemblage resulted from precipitation of Si-rich solutions leached from the lithologies of the provenance area, along with the dissolution of terrigenous detrital feldspars and desiliconization of kaolinite. Most of the authigenic quartz particles (<10 µm) with sharp edges in the coals, which are small enough to easily enter the respiratory tract, might do harm to lung tissue. Therefore, although the contents of SiO2 (4.5 %) and quartz (5.41 %) are low on a whole coal basis, prolonged inhalation of these quartz particles may still pose health risks to humans, especially from the combustion products (i.e., coal ash) which contain much higher proportions of quartz.

Abstract Image

鄂尔多斯盆地神府矿区海湾矿中侏罗统煤无机组分特征:重点研究亚微米级和微米级石英的成因
煤炭开采和燃烧释放出的细小石英颗粒会损害人体健康,可能造成永久性肺损伤甚至死亡。因此,研究煤炭中石英的粒度分布、出现方式和形成机理对于指导安全高效的煤炭开采和煤炭资源的安全利用至关重要。本研究采用多种分析方法,包括 X 射线荧光法、电感耦合等离子体质谱法、定量 X 射线衍射法、光学显微镜和扫描电子显微镜,测定了中国鄂尔多斯盆地海湾煤矿煤炭的地球化学和矿物学特征。海湾煤属于低灰、低硫、高挥发分的烟煤。煤中的无机成分来自阴山造山带的中熔岩和长熔岩,以及多个阶段的自生和流体注入。值得注意的是,石英在煤的低温灰烬中所占比例较高,平均比例为 42.8%。自生石英主要以亚微米至微米级颗粒聚集体的形式出现,通常与高岭石和沸石紧密共存。这种矿物组合是从产地岩性中沥滤出的富含硅的溶液沉淀而成,同时还有陆相碎长石的溶解和高岭石的脱硅作用。煤炭中大部分自生石英颗粒(10 微米)边缘锋利,体积小,容易进入呼吸道,可能对肺组织造成伤害。因此,尽管二氧化硅(4.5%)和石英(5.41%)的含量在整个煤炭中较低,但长期吸入这些石英颗粒仍可能对人体健康造成危害,尤其是燃烧产物(即煤灰)中的石英含量要高得多。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Ore Geology Reviews
Ore Geology Reviews 地学-地质学
CiteScore
6.50
自引率
27.30%
发文量
546
审稿时长
22.9 weeks
期刊介绍: Ore Geology Reviews aims to familiarize all earth scientists with recent advances in a number of interconnected disciplines related to the study of, and search for, ore deposits. The reviews range from brief to longer contributions, but the journal preferentially publishes manuscripts that fill the niche between the commonly shorter journal articles and the comprehensive book coverages, and thus has a special appeal to many authors and readers.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信