Characterization of physical, chemical and microstructure properties in the soft clay soil of the paddy field area by Muhammad Rendana, Wan Mohd Razi Idris, Sahibin Abdul Rahim, Zulfahmi Ali Rahman, Tukimat Lihan

“…The soft clay soil was largely governed by kaolinite minerals, and it had less compact structures with many large voids among soil aggregates. …”
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Distribution and Concentration of Heavy Metals and Polyaromatic Hydrocarbons in Surface Sediments of Kuala Sepetang, Perak, Malaysia by Ismail, Roslan

“…X-ray diffractometry analysis showed dominant presence of kaolinite (7.26A, 3.57 A) and quartz (4.26 A, 3.33 A) in the sediment. …”
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Lithological and alteration mineral mapping in poorly exposed lithologies using Landsat-8 and ASTER satellite data: North-eastern Graham Land, Antarctic Peninsula by Pour, A. B., Hashim, M., Hong, J. K., Park, Y.

“…Fractional abundance of alteration minerals such as muscovite, kaolinite, illite, montmorillonite, epidote, chlorite and biotite were detected in poorly exposed lithologies using target detection algorithms. …”

I‌N‌V‌E‌S‌T‌I‌G‌A‌T‌I‌O‌N A‌N‌D A‌N‌A‌L‌Y‌S‌I‌S O‌F T‌H‌E C‌O‌N‌E P‌U‌L‌L‌O‌U‌T T‌E‌S‌T R‌E‌S‌U‌L‌T‌S I‌N F‌I‌N‌E-G‌R‌A‌I‌N‌E‌D S‌O‌I‌L‌S A‌D‌H‌E‌S‌I‌O‌N... by A. Gharesheykhloo, A. C‌h‌e‌s‌h‌o‌m‌i, G‌h. K‌a‌z‌e‌m‌i, J. H‌a‌s‌s‌a‌n‌p‌o‌u‌r

“…A‌c‌c‌o‌r‌d‌i‌n‌g‌l‌y, l‌i‌n‌e‌a‌r r‌e‌l‌a‌t‌i‌o‌n‌s‌h‌i‌p‌s w‌e‌r‌e p‌r‌o‌p‌o‌s‌e‌d b‌e‌t‌w‌e‌e‌n s‌o‌i‌l m‌o‌i‌s‌t‌u‌r‌e c‌o‌n‌t‌e‌n‌t a‌n‌d t‌e‌n‌s‌i‌l‌e s‌t‌r‌e‌s‌s f‌o‌r m‌o‌n‌t‌m‌o‌r‌i‌l‌l‌o‌n‌i‌t‌e a‌n‌d k‌a‌o‌l‌i‌n‌i‌t‌e c‌l‌a‌y s‌o‌i‌l‌s. S‌l‌o‌p‌e o‌f t‌h‌e c‌u‌r‌v‌e m‌o‌i‌s‌t‌u‌r‌e c‌o‌n‌t‌e‌n‌t v‌e‌r‌s‌u‌s t‌e‌n‌s‌i‌o‌n s‌t‌r‌e‌s‌s f‌o‌r m‌o‌n‌t‌m‌o‌r‌i‌l‌l‌o‌n‌i‌t‌e c‌l‌a‌y s‌o‌i‌l a‌n‌d k‌a‌o‌l‌i‌n‌i‌t‌e c‌l‌a‌y s‌o‌i‌l a‌r‌e 1.25 a‌n‌d 0.82 r‌e‌s‌p‌e‌c‌t‌i‌v‌e‌l‌y. …”
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Numerical Modeling Study on Mineral Alteration and Sealing Performance for CO2 Geological Sequestration with Enhancing Water Recovery in Hydraulic Fractured Shale Reservoirs by Maosen Yan, Chi Ai, Xiaofei Fu, Jun Zhang, Xu Han, Ziyuan Cong, Fahao Yu, Wei Li, Yuwei Li

“…Numerical results showed that the presence of CO2 can lead to the dissolution of k-feldspar, oligoclase, chlorite, and dolomite and the precipitation of clay minerals such as kaolinite, illite, and smectite (Ca-smectite and Na-smectite). …”
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Lithium Isotopic Compositions of Mesozoic and Cenozoic Basalts From South-Eastern China: Implications for Extremely Low δ7Li of Continental-Type Eclogites by Cheng-Long Yu, Yilin Xiao, Yilin Xiao, Yang-Yang Wang, Olivier Nadeau, He Sun, He Sun, Hong-Qiong Wan, Dong-Yong Li, Xiao-Xia Wang, Dong-Bo Tan

“…Subsequently, continental weathering acted on chlorite-bearing basalts, as evidenced by the occurrence of minor kaolinite and illite and weathering trend of δ7Li values in these basalts. …”
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Metal occurrence and textural-compositional properties in bottom sediments from right margin tributaries of the lower del Plata basin by Alicia Ronco, Cecilia Camilión, Marcelo Manassero

“…Illite is the main clay component in all streams. Smectite and kaolinite levels are also high in streams flowing to the Río de la Plata. …”
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Identifying and Mapping Alteration Minerals Using HySpex Airborne Hyperspectral Data and Random Forest Algorithm by Shanshan Wang, Shanshan Wang, Shanshan Wang, Shanshan Wang, Kefa Zhou, Kefa Zhou, Kefa Zhou, Jinlin Wang, Jinlin Wang, Jinlin Wang, Jinlin Wang, Jie Zhao

“…By comparing the features of the HySpex hyperspectral data and standard spectra data from the United States Geological Survey database, endmember pixels of spectral signatures for most alteration mineral assemblages (goethite, hematite, jarosite, kaolinite, calcite, epidote, and chlorite) were extracted. …”
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Main controlling factors and development model of tight reservoirs in the Shihezi Formation-Shanxi Formation in the Ordos Basin: Taking the Binchang area as an example by Song LI, Liyuan MA, Ruyue WANG, Jie DENG, Yudong LI, Xiaoyuan QUAN, Rong JIANG

“…Intermittent volcanic tuff is transformed into kaolinite in acidic strata and altered into chlorite sheaths in alkaline strata, which inhibits quartz overgrowth and calcite cementation and protects the reservoir space. …”
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Evolução geoquímica e mineralógica em perfis de alteração sobre rochas serpentinizadas no sudoeste de Minas Gerais Geochemical and mineralogical evolution in alteration profiles on... by Pablo Vidal-Torrado, Rosa Calvo, Felipe Macias, Sebastião G. Carvalho, Alexandre Christofaro Silva

“…However the most weathered phases observed in well-drained positions, tended to monosialitization with kaolinite formation of variable crystallinity degree. …”
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Inorganic and organic geochemical fingerprinting of sediment sources and ocean circulation on a complex continental margin (São Paulo Bight, Brazil) by M. M. de Mahiques, T. J. J. Hanebuth, R. H. Nagai, M. C. Bícego, R. C. L. Figueira, S. H. M. Sousa, L. Burone, P. Franco-Fraguas, S. Taniguchi, A. B. Salaroli, G. P. Dias, D. M. Prates, M. E. F. Freitas

“…Potassium, here expressed as ln(K ∕ Sc) and ln(K ∕ Al) ratios used as proxies of illite–kaolinite variations, proved to be an important parameter, especially because it allowed us to decipher the imprint of the northward flow of the Intermediate Western Boundary Current (IWBC) in comparison to the southward flows of the Brazil Current (BC) and Deep Western Boundary Current (DWBC). …”
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Vanadium mineralization at Los Chihuidos sediment-hosted Cu–V deposit, Neuquén Basin, Argentina: An approach to vanadium ore forming processes by Ana L. Rainoldi, Daniel Beaufort, Marta B. Franchini, Adolfo Giusiano, Sabine Petit, Patricia Patrier, M. Josefina Pons

“…The spatial transition of V and /or Cu bearing clay minerals observed through the mineralized redox front at Los Chihuidos deposit (kaolinite → smectite → illite/smectite → corrensite-type → di- trioctahedral -chlorite → tri- trioctahedral -chlorite) and the related variation of V–Cu concentrations in bulk rock are indicative of increasing pH and decreasing Eh of resident solutions from red to white sandstones during the hypogene mineralization process. …”
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Iron minerals inhibit the growth of <i>Pseudomonas brassicacearum</i> J12 via a free-radical mechanism: implications for soil carbon storage by H.-Y. Du, G.-H. Yu, G.-H. Yu, F.-S. Sun, F.-S. Sun, M. Usman, M. Usman, B. A. Goodman, W. Ran, Q.-R. Shen

“…Here, using a series of cultivation experiments and biological, chemical and synchrotron-based spectral analyses, we showed that kaolinite, hematite, goethite and ferrihydrite had a significant inhibitory effect on the growth of the model bacteria <i>Pseudomonas brassicacearum</i> J12, which was more prominent with a concentration of 25&thinsp;mg&thinsp;mL<span class="inline-formula">⁻¹</span> than it was with either 10 or 5&thinsp;mg&thinsp;mL<span class="inline-formula">⁻¹</span>. …”
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Óxidos de ferro de solos formados sobre gnaisse do Complexo Bação, Quadrilátero Ferrífero, Minas Gerais Iron oxides of soils formed on gneiss of the Bação Complex geodomain, Quadri... by Múcio do Amaral Figueiredo, José Domingos Fabris, Angélica Fortes Drummond Chicarino Varajão, Paulo Rogério da Costa Couceiro, Ivan Soares Loutfi, Izabel de Souza Azevedo, Vijayendra Kumar Garg

“…All samples have similar mineralogical composition, with a general occurrence corresponding to the sequence quartz >> gibbsite > kaolinite > goethite. From the 4.2 K-Mössbauer results, the coexistence of goethite (major) and hematite is confirmed. …”
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Sedimentary sources and processes in the eastern Arabian Sea: Insights from environmental magnetism, geochemistry and clay mineralogy by Kumar Avinash, P. John Kurian, Anish Kumar Warrier, R. Shankar, T.C. Vineesh, Rasik Ravindra

“…Clay minerals such as illite (24–48.5%), chlorite (14.1–34.9%), smectite (10.6–28.7%) and kaolinite (11.9–27.5%) dominate the sediments of shallow and deep-sea regions and may have been derived from different sources and transported by fluvial and aeolian agents. …”
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Mineralogical Characteristics of Two Clay-type Lithium Resources in Yuxi, China, and Nevada, the United States of America by ZHU Li, YANG Yong-qiong, GU Han-nian, WEN Han-jie, DU Sheng-jiang, LUO Chong-guang

“…However, the clay-type lithium resource samples from the two investigated regions showed large differences in chemical composition, mineral composition, microscopic morphology, and lithium occurrences. (1) YM-1 and YM-2 had similar SiO2 and Al2O3 content, with the total amount of silicon and aluminum oxides exceeding 80%, whereas Ame-1 contained 60.39% SiO2 and Ame-2 comprised 42.30% CaO. (2) YM-1 and YM-2 were composed of kaolinite and montmorillonite, whereas Ame-1 and Ame-2 were composed of quartz, nontronite, stevensite, or calcite. (3) YM-1 and YM-2 were stacked in a layered structure with flat surfaces and had round edges and a relatively uniform size, whereas Ame-1 and Ame-2 were mainly represented by massive mineral aggregates of different sizes. (4) Montmorillonite in YM-1 and YM-2 served as the lithium source, whereas lithium in Ame-1 and Ame-2 originated from smectite minerals or illite. …”
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Soil properties and not inputs control carbon : nitrogen : phosphorus ratios in cropped soils in the long term by E. Frossard, N. Buchmann, E. K. Bünemann, D. I. Kiba, F. Lompo, A. Oberson, F. Tamburini, O. Y. A. Traoré

“…At Saria, the soil is dominated by quartz and some kaolinite, has a coarse texture, a fragile structure, and a low nutrient content. …”
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TotBlocks: exploring the relationships between modular rock-forming minerals with 3D-printed interlocking brick modules by D. D. V. Leung, D. D. V. Leung, P. E. dePolo

“…The bricks can also be deconstructed into <span class="inline-formula"><i>T</i></span> and <span class="inline-formula"><i>O</i></span> layer modules to build other mineral structures such as the brucite, kaolinite–serpentine, and chlorite groups. Then, we use the <span class="inline-formula"><i>T</i></span>-<span class="inline-formula"><i>O</i></span>-<span class="inline-formula"><i>T</i></span> modules within these minerals to visually investigate trends in their properties, e.g., habit, cleavage angles, and symmetry/polytypism. …”
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Accumulation conditions of shale gas in transitional marine-continental coal measures of the Carboniferous-Permian in Henan Province by Shao Longyi, Zhang Liang, Zhang Jingkai, Wang Dewei, Shi Biao, Fu Yafei, Xu Lianli, Song Jianjun

“…The Carboniferous-Permian strata in Henan Province are a set of coal-bearing series of transitional marine-continental facies，of which the mudstones have potentials for shale gas exploration.The mudstones are characterized by a variable thickness of the individual effective mudstone layer and a huge accumulative thickness.In this paper，we utilized the outcrop and borehole core data and investigated the accumulation conditions and the reservoir characteristics of the shale gas in the Carboniferous and Permian coal-bearing strata of Henan Province.The total organic carbon(TOC)，organic matter types，thermal evolution degree，contents of brittle minerals and clay minerals，and pore morphological types of the mudstones were determined by the TOC analyzer，microscopic identification of kerogen，reflectance measurement of vitrinite，X-ray diffraction(XRD)，low temperature nitrogen gas adsorption，respectively.The results showed that the abundance of organic matters of the mudstones was relatively high，with the TOC contents in the mudstones of the Taiyuan，Shanxi and Xiashihezi Formations being 0.95% ～8.04%，0.78% ～9.41%and 0.2% ～ 2.13%，respectively.The types of organic matter were dominated by typeⅢ，followed by typeⅡ₂.The thermal evolution degree ranged from mature to over-mature stage which was favorable for the formation of dry gas.The maturity of the mudstones had a zoned distribution，with the highest maturity being distributed along the Jiaozuo-Zhoukou belt and the lower maturity being distributed towards the south and north from this belt.The XRD analysis showed that the clay minerals of the mudstones could account for 62.0%while the brittle minerals only accounted for 34.1%，indicating that the mudstones had a higher gas adsorption capacity but were difficult for hydraulic fracturing.The clay minerals were mainly composed of 57.1%of illite/smectite mixed layer and 23.5%of kaolinite，which were beneficial to the formation of pore space.The porosity of the mudstones ranged from 1.0%to 4.5%，and the permeability varied between 0.003 and 0.032 mD.The experiment of low temperature nitrogen gas adsorption revealed that the morphological types of the pores included the parallel plate-slit pores and the inclined plate-slit pores.The meso-pores provided the vast majority of specific surface area and total pore volume.The gas contents could reach 1.0 ～3.0 m³/t which is suitable for the condition of shale gas reservoir.It was concluded that the siliciclastic member in the middle Taiyuan Formation(H₁)and the basal part of the Shanxi Formation(H₂)have a higher hydrocarbon potential.The major favorable exploration areas are those having a good preservation condition or a less serious influence from the regional thermal events.…”
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Interaction of sinking behaviour of Saharan dust and lithogenic and biogenic fluxes in the Canary Basin by Maite Báez-Hernández, Noemí García, Inmaculada Menéndez, Alfredo Jaramillo, Isora Sánchez-Pérez, Ángelo Santana, Ignacio Alonso, José Mangas, Santiago Hernández-León

“…The mineralogy of the lithogenic particles included illite, calcite, hematite quartz, barite and kaolinite. The biogenic matter was composed of chitin, transparent exopolymer particles, and carbonates from foraminifera and gastropod shells. …”
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