Geochemical characteristicsof elements in coal seams 41and 42 of Heshan Coalfield,South China

Geochemical characteristicsof elements in coal seams 41and 42 of Heshan Coalfield,South China

Bibliografiska uppgifter
Parent link:Energy Exploration and Exploitation
Vol. 38, iss. 1.— 2020.— [P. 137-157]
Institutionell upphovsman: Национальный исследовательский Томский политехнический университет Инженерная школа природных ресурсов Отделение геологии
Övriga upphovsmän: Zhao Qiaojing, Niu Yongjie, Xie Zhizhong, Zhang Kuangming, Zhou Jinming, Arbuzov S. I. Sergey Ivanovich
Sammanfattning:Title screen
Coal seams 41 and 42 of the Heshan Coalfield belong to superhigh-organic-sulfur coals. In order to study the geochemical characteristics of the coals, 15 coal samples and 6 rock samples were collected from both coal seams and the roof/floor rocks. The samples were investigated by using conventional microscopy, inductively coupled plasma mass spectroscopy, X-ray diffraction, X-ray fluorescence, and scanning electron microscopy with an energy-dispersive X-ray spectroscopy. The results show that minerals in the coals are dominated by kaolinite and a mixed layer illite/ smectite and illite; small ratios of pyrite, quartz, chlorite, smectite, calcite, and dolomite are also present. Under the microscope, these pyrites occur as framboidal, euhedral, homogeneous, anhedral, nodular, and fine dissemination shapes. In Shicun Mine, the trace elements Li, Y, Zr, Sn, Sm, and Tb are enriched; Zn and Ba are depleted. However, in the Heliluoshan Mine, Mo is significantly enriched; Li, Zr, Cs, and U are enriched; and Co and Ba are depleted. The occurrence of Li and Ga is associated mainly with organic matter and sulfate minerals. U and Mo occur in silicate minerals, carbonate minerals, illite, I/S, and pyrite. A reducing environment is beneficial for the enrichment of V, Cr, Mn, Ni, Mo, Cd, and U. The abundances of sulfur in Heshan were controlled mainly by the degree of seawater influence and hydrothermal activities.
Режим доступа: по договору с организацией-держателем ресурса
Språk:engelska
Publicerad: 2020
Ämnen:
электронный ресурс
труды учёных ТПУ
superhigh-organic-sulfur coals
geochemistry
Heshan Coalfield
геохимия
Länkar:https://doi.org/10.1177%2F0144598719886188
Materialtyp: Elektronisk Bokavsnitt
KOHA link:https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=661624

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