DOCSLIB.ORG

Classification of Liptinite

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Classification of Liptinite International Journal of Coal Geology 169 (2017) 40–61 Contents lists available at ScienceDirect International Journal of Coal Geology journal homepage: www.elsevier.com/locate/ijcoalgeo Classification of liptinite – ICCP System 1994 W. Pickel a,⁎,J.Kusb, D. Flores c,S.Kalaitzidisd, K. Christanis d,B.J.Cardotte,M.Misz-Kennanf,S.Rodriguesg, A. Hentschel g,M.Hamor-Vidoh,P.Crosdalei,N.Wagnerj, ICCP 1 a 4/38-3302 Darling Street, Balmain, NSW 2041, Australia b Federal Institute for Geosciences and Natural Resources (BGR) in Geozentrum Hannover, Stilleweg 2, D-30655 Hannover, Germany c Faculdade de Ciências da Universidade do Porto and Instituto de Ciências da Terra - Polo da Universidade do Porto, Rua do Campo Alegre, 687, 4169-007 Porto, Portugal d Department of Geology, University of Patras, 26504 Rio-Patras, Greece e Oklahoma Geological Survey, 100 E. Boyd Street, Suite N131, Norman, OK 73019, USA f University of Silesia, Faculty of Earth Science, ul. Będzińska 60, 41-200 Sosnowiec, Poland g School of Earth Science, Steele Bldg 3, University of Queensland, St. Lucia, Qld. 4072, Australia h Geological and Geophysical Institute of Hungary, 1442 Budapest, Pf 106, Hungary i Energy Resources Consulting Pty Ltd, ERC Technologies Pty Ltd, 4/55 Clarence St, Coorparoo, Qld. 4151, Australia j Department of Geology, University of Johannesburg, Auckland Park, Johannesburg, South Africa article info abstract Article history: The liptinite maceral group has been revised by ICCP in accordance with the ICCP System 1994. After the revision Received 4 November 2016 of the classifications of vitrinite (ICCP, 1998), inertinite, (ICCP, 2001) and huminite (Sykorova et al., 2005) this Accepted 6 November 2016 liptinite classification completes the revised ICCP maceral group classifications. These classifications are collec- Available online 29 November 2016 tively referred to as the “ICCP System 1994”. In contrast to the previous ICCP Stopes Heerlen (ICCP, 1963, 1971, 1975, 1993) this new classification system is applicable to coal of all ranks and dispersed organic matter. Keywords: The classification as presented here was accepted in the ICCP Plenary Session on September 11, 2015 at the ICCP Liptinite fi Cutinite Meeting in Potsdam. The decision to publish this classi cation in the recent form was accepted at the ICCP Plenary Suberinite Session on September 23, 2016 in Houston. Sporinite © 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license Resinite (http://creativecommons.org/licenses/by/4.0/). Exsudatinite Chlorophyllinite Alginite Liptodetrinite Bituminite Classification Contents 1. Introduction...............................................................43 2. Liptinite.................................................................43 2.1. Originofterm...........................................................43 2.2. Etymology............................................................43 2.3. Relatedterms...........................................................43 2.4. Definition.............................................................43 2.4.1. Comment.........................................................43 2.4.2. Note...........................................................43 2.5. Physicalproperties.........................................................43 2.5.1. Colour and reflectance...................................................43 2.5.2. Fluorescence.......................................................43 2.6. Chemicalproperties........................................................43 2.7. Derivation.............................................................43 ⁎ Corresponding author. E-mail address: [email protected] (W. Pickel). 1 Including text on alginite by Cook, A.C. Bituminite based on text by Teichmüller, M. http://dx.doi.org/10.1016/j.coal.2016.11.004 0166-5162/© 2016 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/). W. Pickel et al. / International Journal of Coal Geology 169 (2017) 40–61 41 2.8. Occurrence............................................................ 43 2.9. Practicalimportance........................................................ 43 3. Cutinite(seeFigs.1,2,3)......................................................... 44 3.1. Originofterm........................................................... 44 3.2. Etymology............................................................ 44 3.3. Relatedterms........................................................... 44 3.4. Definition............................................................. 44 3.4.1. Comment........................................................ 44 3.4.2. Note........................................................... 44 3.5. Physicalproperties........................................................ 44 3.5.1. Colour and reflectance................................................... 44 3.5.2. Fluorescence....................................................... 44 3.6. Chemicalproperties........................................................ 44 3.7. Derivation............................................................ 45 3.8. Occurrence............................................................ 45 3.9. Practicalimportance........................................................ 45 4. Suberinite(seeFigs.4,5)......................................................... 45 4.1. Originoftheterm......................................................... 45 4.2. Etymology............................................................ 45 4.3. Relatedterms........................................................... 45 4.4. Definition............................................................. 45 4.4.1. Comment........................................................ 45 4.5. Physicalproperties........................................................ 46 4.5.1. Colour and reflectance................................................... 46 4.5.2. Fluorescence....................................................... 46 4.6. Chemicalproperties........................................................ 46 4.7. Derivation............................................................ 46 4.8. Occurrence............................................................ 46 4.9. Practicalimportance........................................................ 46 5. Sporinite(seeFigs.6,7,8)........................................................ 46 5.1. Originofterm........................................................... 46 5.2. Etymology............................................................ 47 5.3. Relatedterms........................................................... 47 5.4. Definition............................................................. 47 5.4.1. Comment........................................................ 47 5.5. Physicalproperties........................................................ 47 5.5.1. Colour and reflectance................................................... 47 5.5.2. Fluorescence....................................................... 47 5.5.3. Polishinghardness.................................................... 47 5.6. Chemicalproperties........................................................ 47 5.7. Derivation............................................................ 47 5.8. Occurrence............................................................ 47 5.9. Practicalimportance........................................................ 47 6. Resinite(seeFigs.9,10)......................................................... 48 6.1. Originofterm........................................................... 48 6.2. Etymology............................................................ 48 6.3. Relatedterms........................................................... 48 6.4. Definition............................................................. 48 6.4.1. Comment........................................................ 48 6.4.2. Note........................................................... 48 6.5. Physicalproperties........................................................ 49 6.5.1. Colour and reflectance................................................... 49 6.5.2. Fluorescence....................................................... 49 6.5.3. Polishinghardness.................................................... 49 6.6. Chemicalproperties........................................................ 49 6.7. Derivation............................................................ 49 6.8. Occurrence............................................................ 49 6.9. Practicalimportance........................................................ 49 7. Exsudatinite(seeFigs.11,12)....................................................... 49 7.1. Originofterm........................................................... 49 7.2. Etymology............................................................ 49 7.3. Relatedterms........................................................... 49 7.4. Definition............................................................. 49 7.4.1. Comment........................................................ 49 7.5. Physicalproperties........................................................ 49 7.5.1. Colour and reflectance................................................... 49 7.5.2. Fluorescence....................................................... 50 7.5.3. Polishinghardness.................................................... 50 7.6. Chemicalproperties.......................................................
Load more

Recommended publications
  • Petrographic and Vitrinite Reflectance Analyses of a Suite of High Volatile Bituminous Coal Samples from the United States and Venezuela
    Petrographic and vitrinite reflectance analyses of a suite of high volatile bituminous coal samples from the United States and Venezuela Open-File Report 2008-1230 U.S. Department of the Interior U.S. Geological Survey U.S. Department of the Interior Dirk A. Kempthorne, Secretary U.S. Geological Survey Mark D. Myers, Director U.S. Geological Survey, Reston, Virginia 2008 For product and ordering information: World Wide Web: http://www.usgs.gov/pubprod Telephone: 1-888-ASK-USGS For more information on the USGS—the Federal source for science about the Earth, its natural and living resources, natural hazards, and the environment: World Wide Web: http://www.usgs.gov Telephone: 1-888-ASK-USGS Suggested citation: Hackley, P.C., Kolak, J.J., 2008, Petrographic and vitrinite reflectance analyses of a suite of high volatile bituminous coal samples from the United States and Venezuela: U.S. Geological Survey Open-File Report 2008-1230, 36 p., http://pubs.usgs.gov/of/2008/1230. Any use of trade, product, or firm names is for descriptive purposes only and does not imply endorsement by the U.S. Government. Although this report is in the public domain, permission must be secured from the individual copyright owners to reproduce any copyrighted material contained within this report. ii Contents Introduction ........................................................................................................................................................................1 Methods ..............................................................................................................................................................................1
    [Show full text]
  • Chemical and Physical Structural Studies on Two Inertinite-Rich Lump
    CHEMICAL AND PHYSICAL STRUCTURAL STUDIES ON TWO INERTINITE-RICH LUMP COALS. Nandi Malumbazo A thesis submitted in fulfilment of the requirements for the degree of Doctor of Philoso- phy in the School of Chemical and Metallurgical Engineering at the University of the Witwatersrand. Johannesburg, 2011 DECLARATION I, Nandi Malumbazo, declare that the thesis entitled: “CHEMICAL AND PHYSICAL STRUCTURAL STUDIES ON TWO INER- TINITE-RICH LUMP COALS” is my own work and that all sources I have used or quoted have been indicated and ac- knowledged by means of references. Signature: ……………………………………………………………….. Date:………………………………………………………………………… Page i ABSTRACT ABSTRACT Two Highveld inertinite-rich lump coals were utilized as feed coal samples in order to study their physical, chemical structural and petrographic variations during heat treat- ment in a packed-bed reactor unit combustor. The two feed lump coals were selected as it is claimed that Coal B converts at a slower rate in a commercial coal conversion process when compared to Coal A. The reason for this requires detailed investigation. Chemical structural variations were determined by proximate and coal char CO2 reactiv- ity analysis. Physical structural variations were determined by FTIR, BET adsorption methods, XRD and 13C Solid state NMR analysis. Carbon particle type analysis was con- ducted to determine the petrographic constituents of the reactor generated samples, their maceral associations (microlithotype), and char morphology. This analysis was undertaken with the intention of tracking the carbon conversion and char formation and consumption behaviour of the two coal samples within the reactor. Proximate analysis revealed that Coal A released 10 % more of its volatile matter through the reactor compared to Coal B.
    [Show full text]
  • Evaluating the Extent to Which Wildfire History Can Be Interpreted From
    International Journal of Coal Geology 89 (2012) 13–25 Contents lists available at ScienceDirect International Journal of Coal Geology journal homepage: www.elsevier.com/locate/ijcoalgeo Evaluating the extent to which wildfire history can be interpreted from inertinite distribution in coal pillars: An example from the Late Permian, Kuznetsk Basin, Russia V. Hudspith a,⁎, A.C. Scott a, M.E. Collinson a, N. Pronina b, T. Beeley c a Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey TW20 0EX, UK b Geology Department, Moscow State University, Vorobyovy Gory, 119992 Moscow, Russia c Fuels and Combustion, RWE Npower, Windmill Hill Business Park, Whitehill Way, Swindon, Wiltshire SN5 6PB, UK article info abstract Article history: Inertinite (charcoal) distributions in two randomly sampled in situ coal pillars (seams 78 and 88) from the Late Received 15 January 2011 Permian Kuznetsk Basin, Siberia, were analysed using petrographic techniques to determine palaeowildfire Received in revised form 25 July 2011 histories (fire occurrence, type and return interval). In situ coal pillars are judged to be essential for this type of Accepted 29 July 2011 research as they retain information on the original inertinite distribution and maceral clast size ranges which Available online 4 August 2011 can never be obtained from the crushed coals typically used for petrographic analysis. The seams represent an ombrotrophic mire (seam 78) and mire with mire lake (seam 88) depositional Keywords: fi Coal petrography settings but both environments show the same pattern of re history. Charcoal is present in all lithotype Charcoal units in both pillars. Both pillars contain episodic charcoal horizons representing local surface fires within the Mire peat-forming environment, interspersed with frequent regional background fire events (as shown by small Fire return interval scattered inertinite).
    [Show full text]
  • Characteristics of Early Cretaceous Wildfires in Peat-Forming Environment, NE China Shuai Wang, Long-Yi Shao*, Zhi-Ming Yan, Ming-Jian Shi and Yun-He Zhang
    Wang et al. Journal of Palaeogeography (2019) 8:17 https://doi.org/10.1186/s42501-019-0035-5 Journal of Palaeogeography ORIGINAL ARTICLE Open Access Characteristics of Early Cretaceous wildfires in peat-forming environment, NE China Shuai Wang, Long-Yi Shao*, Zhi-Ming Yan, Ming-Jian Shi and Yun-He Zhang Abstract Inertinite maceral compositions in coals from the Early Cretaceous Erlian, Hailar, and Sanjiang Basins in NE China are analyzed in order to reveal palaeowildfire events and palaeoclimate variations. Although huminite is the dominant maceral group in the studied basins, the inertinite group, as a byproduct of palaeowildfires, makes up a considerable proportion. Occurrence of inertinite macerals indicates that wildfires were widespread and frequent, and supports the opinion that the Early Cretaceous was a “high-fire” interval. Inertinite contents vary from 0.2% to 85.0%, mostly within the range of 10%–45%, and a model-based calculation suggests that the atmospheric oxygen levels during the Aptian and Albian (Early Cretaceous) were around 24.7% and 25.3% respectively. Frequent fire activity during Early Cretaceous has been previously related to higher atmospheric oxygen concentrations. The inertinite reflectance, ranging from 0.58%Ro to 2.00%Ro, indicates that the palaeowildfire in the Early Cretaceous was dominated by ground fires, partially reaching-surface fires. These results further support that the Cretaceous earliest angiosperms from NE China were growing in elevated O2 conditions compared to the present day. Keywords: Inertinite, Coal, Wildfire, Palaeo-atmospheric oxygen level, Angiosperm, Early Cretaceous, NE China 1 Introduction 2004;Bowmanetal.2009). The minimum oxygen content As a byproduct of peatland evolution under the common that can support combustion in nature is 15% (Belcher influence of geological conditions including palaeoclimate, and McElwain 2008).
    [Show full text]
  • On the Fundamental Difference Between Coal Rank and Coal Type
    International Journal of Coal Geology 118 (2013) 58–87 Contents lists available at ScienceDirect International Journal of Coal Geology journal homepage: www.elsevier.com/locate/ijcoalgeo Review article On the fundamental difference between coal rank and coal type Jennifer M.K. O'Keefe a,⁎, Achim Bechtel b,KimonChristanisc, Shifeng Dai d, William A. DiMichele e, Cortland F. Eble f,JoanS.Esterleg, Maria Mastalerz h,AnneL.Raymondi, Bruno V. Valentim j,NicolaJ.Wagnerk, Colin R. Ward l, James C. Hower m a Department of Earth and Space Sciences, Morehead State University, Morehead, KY 40351, USA b Department of Applied Geosciences and Geophysics, Montan Universität, Leoben, Austria c Department of Geology, University of Patras, 265.04 Rio-Patras, Greece d State Key Laboratory of Coal Resources and Safe Mining, China University of Mining and Technology, Beijing 100083, China e Department of Paleobiology, Smithsonian Institution, Washington, DC 20013-7012, USA f Kentucky Geological Survey, University of Kentucky, Lexington, KY 40506, USA g School of Earth Sciences, The University of Queensland, QLD 4072, Australia h Indiana Geological Survey, Indiana University, 611 North Walnut Grove, Bloomington, IN 47405-2208, USA i Department of Geology and Geophysics, College Station, TX 77843, USA j Department of Geosciences, Environment and Spatial Planning, Faculty of Sciences, University of Porto and Geology Centre of the University of Porto, Rua Campo Alegre 687, 4169-007 Porto, Portugal k School Chemical & Metallurgical Engineering, University of Witwatersrand, 2050, WITS, South Africa l School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia m University of Kentucky, Center for Applied Energy Research, 2540 Research Park Drive, Lexington, KY 40511, USA article info abstract Article history: This article addresses the fundamental difference between coal rank and coal type.
    [Show full text]
  • Early Paleogene Wildfires in Peat-Forming Environments at Schöningen, Germany
    Robson, B. E., Collinson, M. E., Riegel, W., Wilde, V., Scott, A. C., & Pancost, R. D. (2015). Early Paleogene wildfires in peat-forming environments at Schöningen, Germany. Palaeogeography, Palaeoclimatology, Palaeoecology, 437, 53-62. https://doi.org/10.1016/j.palaeo.2015.07.016 Publisher's PDF, also known as Version of record License (if available): CC BY Link to published version (if available): 10.1016/j.palaeo.2015.07.016 Link to publication record in Explore Bristol Research PDF-document This is the final published version of the article (version of record). It first appeared online via Elsevier at http://www.sciencedirect.com/science/article/pii/S0031018215003764. Please refer to any applicable terms of use of the publisher. University of Bristol - Explore Bristol Research General rights This document is made available in accordance with publisher policies. Please cite only the published version using the reference above. Full terms of use are available: http://www.bristol.ac.uk/red/research-policy/pure/user-guides/ebr-terms/ Palaeogeography, Palaeoclimatology, Palaeoecology 437 (2015) 53–62 Contents lists available at ScienceDirect Palaeogeography, Palaeoclimatology, Palaeoecology journal homepage: www.elsevier.com/locate/palaeo Early Paleogene wildfires in peat-forming environments at Schöningen, Germany Brittany E. Robson a,⁎, Margaret E. Collinson a, Walter Riegel b,VolkerWildec, Andrew C. Scott a, Richard D. Pancost d a Department of Earth Sciences, Royal Holloway University of London, Egham, Surrey, TW20 0EX, UK b Geowissenschaftliches
    [Show full text]
  • Pore-Fractures of Coalbed Methane Reservoir Restricted by Coal Facies in Sangjiang-Muling Coal-Bearing Basins, Northeast China
    energies Article Pore-Fractures of Coalbed Methane Reservoir Restricted by Coal Facies in Sangjiang-Muling Coal-Bearing Basins, Northeast China Yuejian Lu 1,2 , Dameng Liu 1,2,*, Yidong Cai 1,2, Qian Li 1,2 and Qifeng Jia 1,2 1 School of Energy Resources, China University of Geosciences, Beijing 100083, China; [email protected] (Y.L.); [email protected] (Y.C.); [email protected] (Q.L.); [email protected] (Q.J.) 2 Coal Reservoir Laboratory of National Engineering Research Center of Coalbed Methane Development & Utilization, Beijing 100083, China * Correspondence: [email protected]; Tel.: +86-10-82323971 Received: 17 January 2020; Accepted: 4 March 2020; Published: 5 March 2020 Abstract: The pore-fractures network plays a key role in coalbed methane (CBM) accumulation and production, while the impacts of coal facies on the pore-fractures network performance are still poorly understood. In this work, the research on the pore-fracture occurrence of 38 collected coals from Sangjiang-Muling coal-bearing basins with multiple techniques, including mercury intrusion porosimetry (MIP), micro-organic quantitative analysis, and optic microscopy, and its variation controlling of coal face were studied. The MIP curves of 38 selected coals, indicating pore structures, were subdivided into three typical types, including type I of predominant micropores, type II of predominant micropores and macropores with good connectivity, and type III of predominant micropores and macropores with poor connectivity. For coal facies, three various coal facies were distinguished, including lake shore coastal wet forest swamp, the upper delta plain wet forest swamp, tidal flat wet forest swamp using Q-cluster analysis and tissue preservation index–gelification index (TPI-GI), and wood index–groundwater influence index (WI-GWI).
    [Show full text]
  • RESEARCH Evidence of Widespread Wildfires in a Coal Seam from The
    RESEARCH Evidence of widespread wildfires in a coal seam from the middle Permian of the North China Basin Yuzhuang Sun1,*, Cunliang Zhao1, Wilhelm Püttmann2, Wolfgang Kalkreuth3, and Shenjun Qin4 1KEY LABORATORY OF RESOURCE EXPLORATION RESEARCH OF HEBEI, HEBEI UNIVERSITY OF ENGINEERING, HANDAN 056038, HEBEI, CHINA 2INSTITUTE OF ATMOSPHERIC AND ENVIRONMENTAL SCIENCES, GOETHE-UNIVERSITY FRANKFURT AM MAIN, ALTENHÖFERALLEE 1, D-60438 FRANKFURT AM MAIN, GERMANY 3INSTITUTO DE GEOCIÊNCIAS, UNIVERSIDADE FEDERAL DO RIO GRANDE DO SUL, AVENIDA BENITO GONÇALVES, 9500, 91501-970 PORTO ALEGRE, RIO GRANDE DO SUL, BRAZIL 4HEBEI COLLABORATIVE INNOVATION CENTER OF COAL EXPLOITATION, HEBEI UNIVERSITY OF ENGINEERING, HANDAN 056038, HEBEI, CHINA ABSTRACT The North China Basin is the largest coal-bearing basin in China, and has an areal extent of 800,000 km2. We analyzed 138 coal samples and in situ pillar coal samples of the middle Permian from this basin by macropetrography, microscope, scanning electron microscope, gas chromatography, and gas chromatography–mass spectrometer in order to study wildfires. High contents of inertinite (charcoal) and natural coke particles observed in coal samples indicate that vegetation in precursor mires and peats of the middle Permian coal from north China was exposed to far-ranging wildfires. In addition, high-molecular-weight polycyclic aromatic hydrocarbons were detected in the coal samples. These aromatic compounds were formed under high temperatures and provide further evidence of wildfire. These wildfires would have dis- charged significant CO and CO2 gases into the atmosphere and affected the paleoclimate and paleoecosystem. LITHOSPHERE; v. 9; no. 4; p. 595–608 | Published online 18 May 2017 doi:10.1130/L638.1 INTRODUCTION fossils in the sandstones of the uppermost Permian section in north China.
    [Show full text]
  • Origin and Resources of World Oil Shale Deposits - John R
    COAL, OIL SHALE, NATURAL BITUMEN, HEAVY OIL AND PEAT – Vol. II - Origin and Resources of World Oil Shale Deposits - John R. Dyni ORIGIN AND RESOURCES OF WORLD OIL SHALE DEPOSITS John R. Dyni US Geological Survey, Denver, USA Keywords: Algae, Alum Shale, Australia, bacteria, bitumen, bituminite, Botryococcus, Brazil, Canada, cannel coal, China, depositional environments, destructive distillation, Devonian oil shale, Estonia, Fischer assay, Fushun deposit, Green River Formation, hydroretorting, Iratí Formation, Israel, Jordan, kukersite, lamosite, Maoming deposit, marinite, metals, mineralogy, oil shale, origin of oil shale, types of oil shale, organic matter, retort, Russia, solid hydrocarbons, sulfate reduction, Sweden, tasmanite, Tasmanites, thermal maturity, torbanite, uranium, world resources. Contents 1. Introduction 2. Definition of Oil Shale 3. Origin of Organic Matter 4. Oil Shale Types 5. Thermal Maturity 6. Recoverable Resources 7. Determining the Grade of Oil Shale 8. Resource Evaluation 9. Descriptions of Selected Deposits 9.1 Australia 9.2 Brazil 9.2.1 Paraiba Valley 9.2.2 Irati Formation 9.3 Canada 9.4 China 9.4.1 Fushun 9.4.2 Maoming 9.5 Estonia 9.6 Israel 9.7 Jordan 9.8 Russia 9.9 SwedenUNESCO – EOLSS 9.10 United States 9.10.1 Green RiverSAMPLE Formation CHAPTERS 9.10.2 Eastern Devonian Oil Shale 10. World Resources 11. Future of Oil Shale Acknowledgments Glossary Bibliography Biographical Sketch Summary ©Encyclopedia of Life Support Systems (EOLSS) COAL, OIL SHALE, NATURAL BITUMEN, HEAVY OIL AND PEAT – Vol. II - Origin and Resources of World Oil Shale Deposits - John R. Dyni Oil shale is a fine-grained organic-rich sedimentary rock that can produce substantial amounts of oil and combustible gas upon destructive distillation.
    [Show full text]
  • Geomechanical Properties of Coal Macerals; Applications Towards Modelling Swelling of Coal Seams During Carbon Sequestration
    Geomechanical Properties of Coal Macerals; Applications Towards Modelling Swelling of Coal Seams During Carbon Sequestration Thomas Fendera,, Mohamed Rouainiab, Cees Van Der Landa, David Martin Jonesb, Maria Mastalerzc, Jan d b e A. I. Hennissen , Samuel Graham , Thomas Wagner aSchool of Natural and Environmental Sciences, Newcastle University, Newcastle-Upon-Tyne, NE1 7RU, United Kingdom bSchool of Engineering, Newcastle university, Newcastle-Upon-Tyne, NE1 7RU, United Kingdom cIndiana Geological and Water Survey, Bloomington, Indiana, IN 47405, United States dBritish Geological Survey, Keyworth, Nottingham,NG12 5GG, United Kingdom eLyell Centre, Heriot Watt University, Edinburgh, EH14 4AS, United Kingdom Abstract Understanding the mechanical response of coal to CO2 injection is a key to determine the suitability of a seam for carbon capture and underground storage (CCUS). The bulk elastic properties of a coal, which determine its mechanical response, are controlled by the elastic properties of its individual components; macerals and minerals. The elastic properties of minerals are well understood, and attempts have been made to acquire maceral elastic properties (Young’s modulus) by means of Nanoindentation. However, due to the resolution of a nanoindent; the response is likely to be a combination of macerals. Here Atomic Force Microscopy is used for the first time to give a unique understanding of the local Y oung’s modulus of individual coal macerals, with a precision of 10nm in both immature and mature coals. The results at this length scale indicate that the mean and modal Young’s modulus values in all macerals is less than 10GPa. Thermally immature liptinite macerals have a lower modal modulus than the equivalent inertinites.
    [Show full text]
  • Petrology, Rock-Eval and Facies Analyses of the Mcleod Coal Seam and Associated Beds, Pictou Coalfield, Nova Scotia, Canada
    ATLANTIC GEOLOGY 81 Petrology, Rock-Eval and facies analyses of the McLeod coal seam and associated beds, Pictou Coalfield, Nova Scotia, Canada J. Paul Geologisches Institut der Universitat Koln, Ziilpicherstr. 49 5 Koln 1, Germany W. Kalkreuth Institute of Sedimentary and Petroleum Geology, Geological Survey of Canada 3303-33rd Street N.W., Calgary, Alberta T2L 2A7, Canada R. Naylor and W. Smith Nova Scotia Department of Mines and Energy, 1701 Hollis Street Halifax, Nova Scotia B3J 2X1, Canada Date Received May 25,1988 Date Accepted December 15,1988 Coals, cannel coals and oil shales of the McLeod sequence from two boreholes in the Pictou Coalfield, Nova Scotia were analysed using methods of organic petrology and organic geochemistry. Petrographic composition was determined by maceral and microlithotype analyses. Within the McLeod coal seam, varying amounts o f alginite, vitrinite, inertinite, and mineral matter indicate significant changes in the environment of deposition. High amounts of lamalginite and minerals, i.e., clay minerals and pyrite at the base and top of the seam indicate a limnic depositional environment, whereas much dryer conditions are indicated for the middle portion of the seam by better tissue preservation, typical for a wet forest type of swamp. This is confirmed also by results from microlithotype analyses. In the oil shales the predominant maceral is alginite. Coals, cannel coals and oil shales vary significantly in TOC values and hydrocarbon potentials. Parameters such as hydrogen and oxygen indices and hydrocarbon potentials are in good agreement with results from petrographic analyses. Methods o f organic petrology and organic geochemistry define distinct types of organic matter in coals, cannel coals and oil shales which can be related to facies changes and environments of deposition.
    [Show full text]
  • Combined SEM and Reflected Light Petrography of Organic Matter in The
    International Journal of Coal Geology 184 (2017) 57–72 Contents lists available at ScienceDirect International Journal of Coal Geology journal homepage: www.elsevier.com/locate/coal Combined SEM and reflected light petrography of organic matter in the New MARK Albany Shale (Devonian-Mississippian) in the Illinois Basin: A perspective on organic pore development with thermal maturation ⁎ Bei Liua, , Juergen Schiebera, Maria Mastalerzb a Department of Earth and Atmospheric Sciences, Indiana University, Bloomington, IN 47405, USA b Indiana Geological and Water Survey, Indiana University, Bloomington, IN 47405-2208, USA ABSTRACT Organic-matter-hosted pores are an important aspect of pore systems in unconventional gas shale reservoirs. Along with thermal maturity, organic maceral type critically controls the development of secondary organic- matter-hosted pores. Three New Albany Shale samples (Devonian-Mississippian, kerogen type II sequence) having thermal maturities ranging from a vitrinite reflectance (Ro) of 0.55% to 1.42% were analyzed using a reflected light microscope and a field emission scanning electron microscope. Organic pores were examined in specific organic macerals and solid bitumen at different thermal maturities. Vitrinite and inertinite, derived from terrestrial woody materials, occur as discrete particles in this black shale. Within the resolution limits of the scanning electron microscope, these two macerals do not appear to display enhanced secondary pores associated with increases in thermal maturity. Cellular pores (0.2–10 μm) in inertinite were observed throughout the entire maturity range and were typically filled with authigenic quartz or solid bitumen. Because of thermal degrada- tion, amorphous organic matter was not observed at maturities greater than Ro 0.80%.
    [Show full text]