OOIR: Observatory of International Research

Papers

(The median citation count of Clays and Clay Minerals is 2. 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 2021-11-01 to 2025-11-01.)

Article	Citations
Rare Earth and Critical Element Chemistry of the Volcanic Ash-fall Parting in the Fire Clay Coal, Eastern Kentucky, USA	41
Comparison of Epithermal Kaolin Deposits from the Etili Area (Çanakkale, Turkey): Mineralogical, Geochemical, and Isotopic Characteristics	40
Stability of Gaomiaozi bentonite: Interlayer hydration structure and aggregation morphology	40
Calcined Palygorskites as Supplementary Cementitious Materials	26
Review of secondary phases formed under natural alkaline conditions at low temperatures and implications for cement–bentonite interactions in radioactive waste repositories	21
Effects of occurrence form of soil organic matter on the Atterberg limits and thermal conductivity of clays	18
Highly efficient TiO₂-pillared smectite clay with Ni and Co doping for Rhodamine B removal: kinetics of adsorption and photodegradation	17
Tungstate intercalated Mg-Al layered double hydroxide and its derived mixed metal oxide: preparation, characterization, and investigation of optical, electrical, and dielectric properties	16
Low-cost membrane supports for wastewater treatment made from local clay and calcite mixtures	15
The making of kaolinite suspension time-dependent in the structural rejuvenation mode – the face charge hypothesis	13
On the Unusual Temperature Dependence of Kaolinite Intercalation Capacity for N-methylformamide	12
Development and Characterization of Sintered Zeolite and Zeolite-Kaolin Wick Structure for Thermosiphon Heat-Pipe Application	12
Synthesis and Characterization of Non-leaching Inorgano- and Organo-montmorillonites and their Bactericidal Properties Against Streptococcus Mutans	10
A machine learning technique for estimating the zeta potential of clay minerals under various brine conditions	10
Experimental Peloid Formulation Using a Portuguese Bentonite and Different Mineral-Medicinal Waters Suitable for Therapeutic and Well-being Purposes	9
Influence of pH on the Hydrothermal Synthesis of Al-Substituted Smectites (Saponite, Beidellite, and Nontronite)	9
Multidisciplinary insights into zeolite and clay formation in hydrothermally altered volcanic rocks of Çubuk, Turkey	9
Effects of Metal-Polycation Pillaring and Exchangeable Cations on Aflatoxin Adsorption by Smectite	8
Rare-Earth Minerals in Kaolin Ore, Mine Tailings, and Sands – Central Georgia, Upper Coastal Plain	8
Intercalation of the natural pigments, betalains, in a Tunisian smectitic clay: a green synthesis	8
Montmorillonite as an Anti-Tuberculosis Rifampicin Drug Carrier: DFT and Experimental Study	8
Characterization Study of some Bauxite Deposits in Northern Brazil	7
Microstructure and Time-Dependent Behavior of STx-1b Calcium Montmorillonite Suspensions	7
Occurrence of Iron in the Minerals of Carboniferous Coal Gangue of the Pingshuo Open-pit Mine, North China	7
In Memoriam: Selahattin Kadir 1956–2025	7

Synthesis of a Composite Aerogel of Reduced Graphene Oxide Supported by Two-Dimensional Montmorillonite Nanolayers for Methylene Blue Removal	7
Adsorption Behavior of Asphaltene on Clay Minerals and Quartz in a Heavy Oil Sandstone Reservoir with Thermal Damage	7
Correction: Extraction of ⁴⁰Ar-³⁹Ar ages from a multicomponent mixture: a case study from the Tatra Mountains, Poland	6
Molecular Dynamics Simulation of Pore-Size Effects on Gas Adsorption Kinetics in Zeolites	6
Application of an improved TEM-EDS protocol based on charge balance for accurate chemical analysis of sub-micrometric phyllosilicates in low-grade metamorphic rocks	6
Smectite–brine–CO₂ interactions: effects of interlayer chemistry, brine concentration, CO₂ pressure, and temperature	6
Mobility of essential macro- and micro-elements in interaction between artificial sweat and potential peloids of some saline lakes in Mongolia	6
Characterization and Assessment of Natural Amazonian Clays for Cosmetics-Industry Applications	6
Creep Mechanical Properties and Constitutive Model of Hard Brittle Mud Shale	6
Comparative study of the adsorption of tetracycline on clay minerals with various nanostructures: allophane, halloysite, and montmorillonite	6
Determining the stoichiometric composition of Wyoming montmorillonite using improved transmission electron microscopy-energy dispersive X-ray (TEM-EDX) techniques	6
Ionic dissolution and structural evolution of chrysotile and lizardite at the mineral–water interface: reactions in sulfuric acid solution	5
Porewater Content, Pore Structure and Water Mobility in Clays and Shales from NMR Methods	5
Compressibility Behavior of Bentonites by Stern Theory based on Constant Surface Charge Conditions	5
Aflatoxin Adsorption by Natural and Heated Sepiolite and Palygorskite in Comparison with Adsorption by Smectite	5
Variation in the structural order of kaolinite in regolith as an effective indicator of REE mineralization	5
Electrochemical Study of Methoxykaolinite Interactions with Cations and Application to Trace-Level Detection of Pb(II) in Various Aqueous Media	5
Development of a Nanostructured Film Containing Palygorskite and Dermaseptin 01 Peptide for Biotechnological Applications	5
Preparation and Corrosive Anion-curing Capability of Layered Double Hydroxide (LDH)/Montmorillonite Composites	5
Minerals for wastewater purification: a case study	5
Role of clay cation exchange capacity, location of charge, and clay mineralogy on potassium availability in Indian Vertisols	5
Tracing Organic-Inorganic Interactions by Light Stable Isotopes (H, Li, B, O) of an Oil-Bearing Shale and its Clay Fraction During Hydrous Pyrolysis	5
Methods for Determination of the Layer Charge of Smectites: A Critical Assessment of Existing Approaches	5
Preparation and Characterization of Porous Palygorskite/Carbon Composites through Zinc Chloride Activation for Wastewater Treatment	4
Microscopic observations of smectite cation exchange in the absence of free water: implications for the evolution of Mars sediments	4
Ceramics Properties of Indurated-Shale Quarry Wastes from Abakaliki, Southeastern Nigeria: Application as Raw Materials in Roofing-Tile Production	4
Super-efficient Reduction of 4-nitrophenol Using Raw Pelagic Clays as Catalysts	4
Investigating clay swelling and permeability impairment in sandstone formations during steam flooding	4
Enhanced quality control and smectite quantification for bentonites in the Bavarian mining district based on layer charge measurement with the O-D method	4
Crystallization between (100) Goethite and (001) Orientation of Hematite – A Review	4
Unlocking the potential of V/Ti-AAC: a promising eco-friendly catalyst for cyclohexene epoxidation	4
Aflatoxin B₁ Sorption and Safety of Dietary Sodium Bentonite in Sprague-Dawley Rats	4
Effect of a Water Phase on the Swelling Pressure and Water Retention of an Unsaturated Bentonite–Sand Mixture with Insignificant Osmotic Suction	4
Effects of the Inclusion of Ce and Ni Species on Ti for Modification of K10-Clay by Sol-Gel and their Use as Catalysts in the Liquid-Phase Esterification Systems	4
Correction to: Formation of Humboldtine During the Dissolution of Hematite in Oxalic Acid – Density Functional Theory (DFT) Calculations and Experimental Verification	4
Thermal Analysis and Thermal Reactions of Smectites: a Review of Methodology, Mechanisms, and Kinetics	4
Extraction of ⁴⁰Ar-³⁹Ar Ages from a Multicomponent Mixture: A Case Study From the Tatra Mountains, Poland	4
Mobility patterns of rare earth elements in diagenetically altered vitric tuff shaped by illite-smectite	3
Genesis of Smectites associated with a Coal Seams Succession in the Neogene Orhaneli and Keles Coal Deposits (Bursa), NW Turkey	3
Effect of the SiO₂/Al₂O₃ Molar Ratio on the Microstructure and Properties of Clay-based Geopolymers: A Comparative Study of Kaolinite-based and Halloysite-based Geopol	3
Boron and Lithium Isotopic Signatures of Nanometer-Sized Smectite-Rich Mixed-Layers of Bentonite Beds From Campos Basin (Brazil)	3
Composite Nanoarchitectonics of LaNi_0.95Fe_0.05O₃/Muscovite for Enhanced Photocatalytic Activity	3
Interfacial X-Ray Scattering From Small Surfaces: Adapting Mineral-Fluid Structure Methods for Microcrystalline Materials	3
Functional Montmorillonite/Polymer Coatings	3
Synthesis and Evaluation of Betaine Copolymer Filtrate Reducer for Drilling Mud	3
Effect of pre-treatments on analcime synthesis from abundant clay-rich illite	3
Aqueous Solubility of Zn Incorporated into Mg-Al-Layered Double Hydroxides	3
Characterization of Iron-Rich Phyllosilicates Formed at Different Fe/Si Ratios	3
Modification of the cation exchange population and CEC values of reacted bentonites of the third retrieved package of the alternative buffer material (ABM-5) experiment operated at up to 250°C	3
Effect of temperature on the synthesis of g-C₃N₄/montmorillonite and its visible-light photocatalytic properties	3

High-temperature-resistant organoclay via quaternary ammonium salt and silane co-modification for oil-based drilling fluids	3
Raw Materials Used in Traditional Pottery from Northern Morocco: Possible Alternative Material for a Sustainable Future in the Fran Ali Area	3
A New Preparation Method for cis-1,4-polyisoprene/Na-montmorillonite Latex Composites by in situ Solution Emulsification	3
Design Approaches, Functionalization, and Environmental and Analytical Applications of Magnetic Halloysite Nanotubes: A Review	3
Factors affecting the bleaching performance of thermally activated palygorskite and palygorskite-smectite clays from the Ventzia Basin, west Macedonia, Greece	3
Duane M. (Dewey) Moore (1933–2024)	3
Efficacy of Two Texas Bentonites in Binding Aflatoxin B1 and in Reducing Aflatoxicosis in Broilers	3
The Composition and Growth Mechanism of Coexisting 4M₂ and 4A₈ Biotite Polytypes from Rhyolite of Long Valley Caldera, California	3
A molecular dynamics simulation study of paraquat intercalated montmorillonite	2
Dispersion and Swellability of Ternary Surfactant Co-Modified Montmorillonites	2
Tuning the Acidity of Montmorillonite by H₃PO₄-Activation and Supporting WO₃ for Catalytic Dehydration of Glycerol to Acrolein	2
A Review of the Reactivity of Phosphatase Controlled by Clays and Clay Minerals: Implications for Understanding Phosphorus Mineralization in Soils	2
Synthesis of Magnetic Sulfonated Carbon/Fe₃O₄/Palygorskite Composites and Application as a Solid Acid Catalyst	2
Development and characterization of organically grafted clay minerals for the removal of methylene blue from water	2
Formation of Humboldtine During the Dissolution of Hematite in Oxalic Acid – Density Functional Theory (DFT) Calculations and Experimental Verification	2
Development of Kinetic Parameters for Nitric Acid Leaching of Phlogopite and the Characterization of Solid Products	2
Phase-Transition Process in the Hydrothermal Zeolitization of Volcanic Ash into LTA and FAU Structures	2
Influence of force field on clay–water contact angle determination using molecular dynamics	2
Evolution of Alkali Release by an Illitic Rock for Use as Supplementary Cementitious Material	2
Preparation and Properties of Antibacterial Polyhexamethylene Biguanide/Palygorskite Composites as Zearalenone Adsorbents	2
Mineralogy, Chemistry, and Thermal and Surface Properties of Various Technological Types of K-Bentonite from the Dolná Ves Deposit (Kremnické vrchy Mts., Western Carpathians, Slovakia)	2
Physicochemical Variation of Clay Minerals and Enrichment of Rare Earth Elements in Regolith-hosted Deposits: Exemplification from The Bankeng Deposit in South China	2
Low-order kaolinite from bauxite mine tailings in the Amazon as a precursor for geopolymers: mineralogical and mechanical properties	2
Evaluation of the Hydraulic Conductivity of Geosynthetic Clay Liners	2
Iron Removal from Kaolin Waste Dumps by Chemical (Oxalic and Citric Acids) and Biological (Bacillus Strain) Leaching	2
The role of illite in the global cycle of elements	2