any of the organic units that constitute coal: equivalent to any of the mineral constituents of a rock
Word origin
C20: from Latin mācerāre to macerate
Examples of 'maceral' in a sentence
maceral
The maceral composition of liptinite was determined by a fluorescence measurement.
Sýkorová Ivana, Verbich Frantiek, Machajová Zlatica 2000, 'The geology and petrography composition of coal from Handlová deposit', Acta Montanistica Slovacahttp://actamont.tuke.sk/pdf/2000/n3/11machajova.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
Vitrinite reflectance, mercury injection, and maceral statistical analysis are used to characterize the coal.
Shangbin Chen, Yanming Zhu, Wu Li, Hui Wang 2012, 'Influence of magma intrusion on gas outburst in a low rank coal mine', International Journal of Mining Science and Technologyhttp://www.sciencedirect.com/science/article/pii/S2095268612000560. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
These include the internal structure of coal, its structural properties, and its maceral composition.
Marta Skiba 2016, 'The influence of the discrepancies in the observers' decisions on the process of identificationof maceral groups using artificial neural networks', Journal of Sustainable Mininghttp://www.sciencedirect.com/science/article/pii/S2300396017300046. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The maceral assemblages show an abundance of collotelinite, telinite, vitrodetrinite, fusinite, and semifusinite.
James C. Hower, Cortland F. Eble, Jennifer M. K. O'Keefe, Shifeng Dai, Peipei Wang,Panpan Xie, Jingjing Liu, Colin R. Ward, David French 2015, 'Petrology, Palynology, and Geochemistry of Gray Hawk Coal (Early Pennsylvanian, Langsettian)in Eastern Kentucky, USA', Mineralshttp://www.mdpi.com/2075-163X/5/3/0511. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
The maceral ulminite and densinite contributes to the high huminite content.
Kupka Daniel, Èurillová Dana, Sýkorová Ivana, Machajová Zlatica 2000, 'Petrographical and mineralogical analysis of coal after biological leaching', Acta Montanistica Slovacahttp://actamont.tuke.sk/pdf/2000/n3/10machajova.pdf. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
It was found that char morphology depended on coal rank and maceral composition.
Diana Vargas, Deisy Chaves Sanchez, Maria Patricia Trujillo Uribe, Jorge Luis PiñeresMendoza, Juan Manuel Barraza Burgos 2013, 'Beneficiated coals' char morphology', Ingeniería e Investigaciónhttps://revistas.unal.edu.co/index.php/ingeinv/article/view/37660. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
And the composition of coal petrography, maceral and microlithotype are the most frequentlyused parameters.
Shuo Feng, Jing He, Jijun Tian, Xingyu Lu, Bo Yang 2019, 'The characteristic and evolution of coal-forming swamp in Hanshuiquan district, SantanghuCoalfield, Xinjiang, NW China, during the Middle Jurassic: evidence from coal petrography,coal facies and sporopollen', International Journal of Coal Science & Technologyhttp://link.springer.com/article/10.1007/s40789-018-0230-5. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This would further help in evaluating the distribution and chemical character of the mineral matter occurring within the maceral types.
Vivek Mishra, K. N. Singh 2017, 'Microstructural relation of macerals with mineral matter in coals from Ib valley andUmaria, Son-Mahanadi basin, India', International Journal of Coal Science & Technologyhttp://link.springer.com/article/10.1007/s40789-017-0169-y. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)
This finding indicates that the coalification and maceral compositions have significant effects on the adsorption heat of coal for methane.
Yingke Liu, Jianhong Kang, Fubao Zhou, Yanming Fan, Haijian Li 2018, 'Effects of Maceral Compositions of Coal on Methane Adsorption Heat', Geofluidshttp://dx.doi.org/10.1155/2018/7596138. Retrieved from DOAJ CC BY 4.0 (https://creativecommons.org/licenses/by-sa/4.0/legalcode)