Classification of huminite—ICCP System 1994

Sýkorová, Ivana; Pickel, W.; Christanis, Kimon; Wolf, Monika; Taylor, G.H.; Flores, Deolinda

doi:10.1016/j.coal.2004.06.006

Cited by 412 publications

(190 citation statements)

References 20 publications

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“…Corpohuminite and textinite formation has been demonstrated to begin within as little as five years in wood deployed in a moist seep (O'Keefe et al, 2011; their figure 13C). As rank increases, the tissue remnants are referred to as "huminite macerals" until they reach a reflectance of about 0.4% R r , and are referred to as "vitrinite macerals" from a reflectance of about 0.5% to 7.0% R r (ICCP, 1998;Sýkorová et al, 2005). This is a nomenclatural artifact, and NOT one maceral changing into another.…”

Section: Huminite/vitrinitementioning

confidence: 99%

“…This is a nomenclatural artifact, and NOT one maceral changing into another. This nomenclatural artifact, and thus confusion of coal rank and coal type, has been perpetuated by the ICCP in treating the macerals separately (ICCP, 1998;Sýkorová et al, 2005), rather than as a rank-driven continuum of aspects of the same material (Fig. 3).…”

Section: Huminite/vitrinitementioning

confidence: 99%

“…Woody and parenchymatous tissues and their components can form huminite macerals under a variety of pH and Eh conditions (Sýkorová et al, 2005) in both topogenous and ombrogenous mires. Corpohuminite and textinite formation has been demonstrated to begin within as little as five years in wood deployed in a moist seep (O'Keefe et al, 2011; their figure 13C).…”

Section: Huminite/vitrinitementioning

confidence: 99%

See 2 more Smart Citations

On the fundamental difference between coal rank and coal type

O’Keefe

Bechtel

Christanis

et al. 2013

International Journal of Coal Geology

274

104

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Section: Huminite/vitrinitementioning

confidence: 99%

Section: Huminite/vitrinitementioning

confidence: 99%

Section: Huminite/vitrinitementioning

confidence: 99%

See 1 more Smart Citation

On the fundamental difference between coal rank and coal type

O’Keefe

Bechtel

Christanis

et al. 2013

International Journal of Coal Geology

274

104

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“…Notes: 1 The official ICCP-System 1994 was published in three research articles concerning the maceral groups of huminite (Sýkorová et al, 2005), vitrinite (ICCP, 1998) und inertinite (ICCP, 2001. The Liptninte-group was not newly reviewed.…”

Section: 2mentioning

confidence: 99%

Modelling the relationship between carbon aromaticity of lignite pyrolysis chars and the process temperature with petrographic parameters

Gerschel

Schmidt

2016

IJOGCT

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For replacing the cost and time consuming 13 C DP-MAS NMR spectroscopy reliable models describing the development of the carbon aromaticity of pyrolysis chars with increasing process temperature should be evolved by means of the micropetrographic parameters reflection, remission, Vickers microhardness and content of semicoke. It has shown that componential constitution and remission is rather caused by the process temperature and depends therefore only indirectly on the aromaticity. The parameters' reflectance and microhardness, however, increase with increasing aromaticity due to the higher molecular ordering, even if the relationship is not linear. All obtained correlations are highly significant and well fitted, but the model concerning the reflectance leads to most appropriate results. [Received: October 29, 2014; Accepted: December 28, 2014] Keywords: 13 C DP-MAS NMR; aromaticity; char; lignite; Vickers microhardness; pyrolysis; reflection; remission; semicoke.Reference to this paper should be made as follows: Gerschel, H. and Schmidt, M. (2016) 'Modelling the relationship between carbon aromaticity of lignite pyrolysis chars and the process temperature with petrographic parameters', Int. J. Oil, Gas and Coal Technology, Vol. 11, No. 3, Biographical notes: Henny Gerschel holds an MSc in Depositional Geology of Fossil Fuels. Her current research interests include petrographic classification and analysis of pyrolysis residues. She is a scientific employee at the Technical University of Freiberg working on the research project DER in cooperation with RWE, Vattenfall, MIBRAG and ROMONTA. Modelling the relationship between carbon aromaticity 291Mirjam Schmidt holds a Diploma in Chemistry. Her current research interests include analytical molecular spectroscopy of solid and liquid fossil fuels. She is a scientific employee at the Technical University of Freiberg working on the research project DER in cooperation with RWE, Vattenfall, MIBRAG and ROMONTA. This paper is a revised and expanded version of a paper entitled 'Modelling the aromaticity of lignite pyrolysis chars with petrographic parameters in relation to the process temperature' presented at the 6th International Freiberg

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“…The line-to-line and point-topoint spacing was maintained at 0.4 mm and more than 600 counts were taken on each sample. The methodology given by Taylor et al (1998) was adopted; huminite macerals were termed and described as per ICCP-1994(Sýkorová et al 2005, liptinite macerals have been identified as per ICCP system-1994 (Pickel et al 2017) while ICCP (2001 was followed for the nomenclature of inertinite macerals. In the present study, the indices, gelification index (GI) and tissue preservation index (TPI), have been taken from Flores (2002) which is a modified version of Kalkreuth et al (1991), for brown coals and the calculations are as per the following formulae:…”

Section: Geology Of Cambay Basinmentioning

confidence: 99%

Petrographic characteristics and paleoenvironmental history of Eocene lignites of Cambay basin, Western India

Singh

et al. 2017

Int J Coal Sci Technol

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Lignite samples collected from Vastan, Rajpardi and Tadkeshwar lignite mines of Cambay basin (Gujarat) were subjected to organic petrographic investigations and geochemical analyses and the data, thus generated, is used to reconstruct the paleodepositional history of these lignite sequences. The lignites of Cambay basin dominantly comprise huminite maceral group (71.6%-86.3%) followed by liptinite (10.1%-19.3%) and inertinite (3.6%-11.0%) maceral groups. The mineral matter varies from 9.0% to 20.0%. The petrography based facies model indicates that these lignites have high values of gelification index (GI) and low tissue preservation index revealing a continuous wet condition in the basin and a relatively slower rate of subsidence during the decay of organic matter. On several occasions, during the formation of seams in Tadkeshwar, Rajpardi and Vastan mines, the value of GI exceeded 10 which indicates a forest permanently flooded and the cause of pronounced degree of degradation. However, few sections in Tadkeshwar seam had relatively drier spells of environmental conditions due to fluctuation in the water table as revealed by moderately high content of inertinite macerals. This is specially indicated by the occurrence of funginite which normally thrives in the upper oxygenated peatigenic layer and indicates prevalence of oxic conditions during plant deposition. Such conditions prevailed during a transgressive phase but there were intermittent fluvial activities also giving rise to supratidal flood plain as reflected in the form of associated carbonaceous shales in the basin.

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Classification of huminite—ICCP System 1994

Cited by 412 publications

References 20 publications

On the fundamental difference between coal rank and coal type

On the fundamental difference between coal rank and coal type

Modelling the relationship between carbon aromaticity of lignite pyrolysis chars and the process temperature with petrographic parameters

Petrographic characteristics and paleoenvironmental history of Eocene lignites of Cambay basin, Western India

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