OOIR: Observatory of International Research

Papers

(The H4-Index of International Journal of Coal Geology is 34. The table below lists those papers that are above that threshold based on CrossRef citation counts [max. 250 papers]. The publications cover those that have been published in the past four years, i.e., from 2022-05-01 to 2026-05-01.)

Article	Citations
Editorial of the special issue: The 2023 joint 74th ICCP and 39th TSOP meeting: Organic petrology in the energy transition era: Challenges ahead	288
Editorial Board	97
Effects of acid concentration on the recovery of rare earth elements from coal fly ash	88
Intelligent classification of coal structure using multinomial logistic regression, random forest and fully connected neural network with multisource geophysical logging data	70
Interlaboratory study: Testing reproducibility of solid biofuels component identification using reflected light microscopy	68
Component identification of solid biomass fuels using reflected light microscopy: Interlaboratory study 2	65
Organic petrography and geochemistry of the Lower-Carboniferous coals from the Ekibastuz Basin, Kazakhstan	65
Organic matter accumulation, paleoenvironment and kerogen structure of the Middle Jurassic Dameigou Formation, Qaidam Basin: Evidence from organic petrography and geochemistry	59
Organic matter accumulation mechanisms in the Wufeng-Longmaxi shales in western Hubei Province, China and paleogeographic implications for the uplift of the Hunan-Hubei Submarine high	58
Integrated stratigraphy of an Upper Miocene lignite-bearing succession based on wireline log, seismic and organic petrographic data in the Tiszapalkonya-1 core section, NE Hungary	58
Hydrothermal activity control on the Mid-Triassic palaeoenvironmental evolution and organic matter enrichment mechanisms in the Ordos Basin, North China Craton	56
Deep-basin gas generation via organic–inorganic interactions: New insights from redox-controlled hydrothermal experiments at elevated temperature	55
Implications of element enrichment in paralic coals from the Carboniferous in England	53
Scanning electron microscopic evaluation of broad ion beam milling effects to sedimentary organic matter: Sputter-induced artifacts or naturally occurring porosity?	52
The implementation of subterranean barriers with mine pre-drainage to reduce coal mine methane emissions from open-cut and underground metallurgical-coal mines	51
Editorial Board	50
Characterizing hydrocarbon-bearing fluid inclusions using CLSM-based microspectrometry with application to the Upper Permian rock salt in the Gorleben and Morsleben sites, Germany	48
The occurrence of elevated δ34S in dissolved sulfate in a multi-level coal mine water system, Glasgow, UK	48
Wood-degrading fungal origin of perylene in peatlands of southern Poland: A molecular and statistical approach	47
Ranking the oil contribution of individual layers in a lacustrine shale oil system based on non-hydrocarbon analysis by FT-ICR MS	47
Unraveling hiatuses in black shales: Mechanisms and implications from the Lower Silurian Longmaxi Formation, South China	46
Petrographic and geochemical signatures of the Upper Permian Gondwana coals: Newcastle Coal Measures, Northern Sydney Basin, Australia	44
Cooper Basin REM gas shales after CO2 storage or acid reactions: Metal mobilisation and methane accessible pore changes	44
Deposition of atmospheric polycyclic aromatic hydrocarbons in rural areas: Current data and historical record from an ombrotrophic peatland	42
Comparative metabolomic reveals chemotaxonomic markers of resin fossils for identification of botanical origins	41

Structure and morphology of chars and activated carbons obtained from thermal treatment of coal and biomass origin materials, including their wastes: Results from the ICCP Microscopy of Carbon Materia	41
Simultaneous enhanced oil recovery, CCUS and UHUS in shale oil reservoirs	40
Application of organic petrology and chemistry in forensic studies of solid waste sites	40
Effect of ScCO2-H2O treatment duration on the microscopic structure of coal reservoirs: Implications for CO2 geological sequestration in coal	39
Evaporite minerals from the coal mines of the Czech part of the Upper Silesian Basin, including a new mineral králíkite (BaCl2·2H2O)	37
Physicochemical characteristics and oxidative potential of size-segregated respirable coal mine dust: Implications for potentially hazardous agents and health risk assessment	37
Distribution of Li, Ga, Nb, and REEs in coal as determined by LA-ICP-MS imaging: A case study from Jungar coalfield, Ordos Basin, China	37
A comprehensive review of deep coalbed methane and recent developments in China	36
Uncertainty quantification for CO2 storage during intermittent CO2-EOR in oil reservoirs	34
Was coal metamorphism an influence on the minor element chemistry of the Middle Pennsylvanian Springfield (No. 9) coal in Western Kentucky?	34