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Geochemistry, Petrology, and Palynology of the Princess No. 3 Coal, Greenup County, Kentucky

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Geochemistry, Petrology, and Palynology of the Princess No. 3 Coal, Greenup County, Kentucky University of Kentucky UKnowledge Center for Applied Energy Research Faculty Publications Center for Applied Energy Research 12-2020 Geochemistry, Petrology, and Palynology of the Princess No. 3 Coal, Greenup County, Kentucky Madison M. Hood University of Kentucky, [email protected] Cortland F. Eble University of Kentucky, [email protected] James C. Hower University of Kentucky, [email protected] Shifeng Dai China University of Mining and Technology, China Follow this and additional works at: https://uknowledge.uky.edu/caer_facpub Part of the Geology Commons, and the Mining Engineering Commons Right click to open a feedback form in a new tab to let us know how this document benefits ou.y Repository Citation Hood, Madison M.; Eble, Cortland F.; Hower, James C.; and Dai, Shifeng, "Geochemistry, Petrology, and Palynology of the Princess No. 3 Coal, Greenup County, Kentucky" (2020). Center for Applied Energy Research Faculty Publications. 34. https://uknowledge.uky.edu/caer_facpub/34 This Article is brought to you for free and open access by the Center for Applied Energy Research at UKnowledge. It has been accepted for inclusion in Center for Applied Energy Research Faculty Publications by an authorized administrator of UKnowledge. For more information, please contact [email protected]. Geochemistry, Petrology, and Palynology of the Princess No. 3 Coal, Greenup County, Kentucky Digital Object Identifier (DOI) https://doi.org/10.1007/s40789-020-00298-0 Notes/Citation Information Published in International Journal of Coal Science & Technology, v. 7, issue 4. © The Author(s) 2020 This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit https://creativecommons.org/licenses/by/4.0/. This article is available at UKnowledge: https://uknowledge.uky.edu/caer_facpub/34 Int J Coal Sci Technol https://doi.org/10.1007/s40789-020-00298-0 Geochemistry, petrology, and palynology of the Princess No. 3 coal, Greenup County, Kentucky 1,2,6 3 1,2 4,5 Madison M. Hood • Cortland F. Eble • James C. Hower • Shifeng Dai Received: 21 November 2019 / Revised: 3 January 2020 / Accepted: 7 January 2020 Ó The Author(s) 2020 Abstract The high volatile C bituminous-rank, Bolsovian-age Princess No. 3 coal, a correlative of the heavily-mined Hazard No. 7 coal and the Peach Orchard and Coalburg Lower Split coals, was investigated three sites at a mine in Greenup County, Kentucky. The coal exhibits a ‘‘dulling upwards’’ trend, with decreasing vitrinite and a greater tendency towards dull clarain and bone lithotypes towards the top of the coal. The relatively vitrinite-rich basal lithotype is marked by a dominance of lycopod tree spores. The palynology transitions upwards to a middle parting co-dominated by tree fern and small lycopod spores and an upper bench dominated by tree ferns with contributions from small ferns, cordaites, and calamites. The lithotypes generally have a moderate- to high-S content with a variable ash yield. Sulfur, Fe2O3, and certain siderophile elements are highest near the top of the coal. As observed in other coals, uranium and Ge are enriched at the top and bottom margins of the coal. The rare earth chemistry at the top of the coal has a significantly lighter distribution (higher LREE/HREE) than at the base of the coal. Keywords Maceral Á Rare earth elements Á Lanthanides Á Coal lithology 1 Introduction & James C. Hower [email protected] The Bolsovian age (Westphalian C, Middle Pennsylvanian) Princess No. 3 coalbed in the Argillite 7.50 quadrangle in Madison M. Hood [email protected] Greenup County, Kentucky (Fig. 1), is approximately correlative to the lower split of the Peach Orchard or Cortland F. Eble [email protected] Coalburg and the Hazard No. 7 coals (among other names), which have been mined extensively elsewhere in the Shifeng Dai [email protected] eastern Kentucky and southern West Virginia coalfields (based on compilations of coal names by the Kentucky 1 Center for Applied Energy Research, University of Kentucky, Geological Survey and the Center for Applied Energy 2540 Research Park Drive, Lexington, KY 40511, USA Research in the 1980s). In northeastern Kentucky, the 2 Department of Earth and Environmental Sciences, University Princess No. 3 coal, with an estimated original resource of Kentucky, Lexington, KY 40506, USA estimate of approximately 200 Mt, occurs about 60-m 3 Kentucky Geological Survey, Lexington, KY 40506, USA below the Princess No. 7 coal bed. 4 State Key Laboratory of Coal Resources and Safe Mining, The original investigation of the coal was part of a study China University of Mining and Technology, Beijing, China of methods for the enhanced recovery of coal from aban- 5 School of Resources and Geosciences, China University of doned surface mine highwalls. Highwall mining is a hybrid Mining and Technology, Xuzhou 221116, China of surface and underground mining, mining coal from a 6 Present Address: Department of Geosciences, Baylor surface exposure, such as a contour mining operation, University, Waco, TX 76798, USA 123 M. M. Hood et al. County, the correlative of the Princess No. 3 coal (Esterle et al. 1992), few detailed studies of northeastern Kentucky coals have been undertaken. As such, this investigation is an opportunity to further examine coals in a part of eastern Kentucky that is geologically more akin to the settings found in Ohio, northern West Virginia, and southwestern Pennsylvania than it is to the remainder of eastern Kentucky. 2 Methods The coal was collected in lithotype intervals from two cores and one mine face site at a single mine site (Figs. 2, 3a). The underlying Princess No. 3 leader coalbed was sampled a short distance from the mine face, at a point overlying a drainage pond (Fig. 3b). Petrology was conducted at the University of Kentucky Center for Applied Energy Research (CAER) on epoxy- bound particulate pellets prepared to final 0.05-lm alumina polish. Optical microscopy was conducted on a Leitz Orthoplan microscope with polarized reflected-light, oil- immersion optics at a final magnification of 500 9. Vitri- nite reflectance was done with the incoming light polarized at 45° and the reflected light passing through a 546-nm bandwidth filter on the path to the photomultiplier. The photomultiplier was standardized using glass standards of known reflectance. Maceral identification was based on nomenclature from the International Committee for Coal and Organic Petrology (1998, 2001) and Pickel et al. (2017). For the basic coal analyses performed at the CAER, proximate analysis followed ASTM Standards D3173/ Fig. 1 Stratigraphic section after Sheppard and Ferm (1962). The D3173M-17a (2017), D3175-18 (2018b), and D3174-12 interval thickness is approximately 55 m (2018a); total sulfur and forms of sulfur analyses followed ASTM Standards D4239-18e1 (2018c) and D2492-02 utilizing a continuous miner cutting head. No mining per- (2012), respectively; and the ultimate analysis and heating sonnel are required to go underground. In the case of the value determinations were performed based on ASTM study, the remaining coal was to be mined using a highwall Standards D3176-15 (2015) and D5865/D5865M-19 miner (ADDCAR 2019), with a circulating fluidized bed (2019), respectively. Ash chemistry at the CAER was fly ash grout pumped into the horizontal mine slots, sta- analyzed by X-ray fluorescence on a Phillips PW2404 bilizing the roof so that the pillars could be mined on a X-ray spectrometer following procedures outlined by second pass. Because of logistics, including unsafe mining Hower and Bland (1989). Inductively coupled plasma mass conditions due to the highwall lithology, the experiment spectrometry (X series II ICP-MS), in pulse counting mode was not conducted at this site and the test was conducted (three points per peak), was used to determine trace ele- elsewhere in eastern Kentucky (Robl et al. 1998). ments in the coal samples (samples from 1155 to 117) at In this study, the geochemistry, with an emphasis on the China University of Mining and Technology, Beijing Ge and Rare Earth Element concentrations; organic and (CUMTB). For ICP-MS analysis, samples were digested inorganic petrology; and the palynology of the Princess No. using an UltraClave Microwave High Pressure Reactor 3 coal in a small area of Greenup County, Kentucky, are (Milestone) (after Dai et al. 2011). Arsenic and Se were investigated. With the exceptions of a regional investiga- determined by ICP-MS using collision cell technology tion of whole-channel samples from cores (Hower and (CCT) in order to avoid disturbance of polyatomic ions (Li Wild 1981) and the study of the Mudseam coal in Elliot et al. 2014). Multi-element standards (Inorganic Ventures: 123 Geochemistry, petrology, and palynology of the Princess No. 3 coal, Greenup County, Kentucky Fig. 2 Location of Greenup County (arrow), Kentucky, with inset of sampling locations. Simplified lithologic profiles of the three sampling sites are shown on the local-area map CCS-1, CCS-4, CCS-5, and CCS-6; NIST 2685b and potassium hydroxide, repeatedly washed with distilled Chinese standard reference GBW 07114) were used for water, and concentrated with zinc chloride (specific gravity calibration of trace element concentrations.
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