Clay Minerals最新文献

Morphological features of halloysite nanotubes (HNTs) as revealed by various microscopies 通过各种显微镜观察埃洛石纳米管（HNT）的形态特征

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2023-12-22 DOI: 10.1180/clm.2023.37

N. Gray-Wannell, P. Cubillas, Z. Aslam, P. Holliman, H. C. Greenwell, R. Brydson, E. Delbos, L-J. Strachan, M. Fuller, S. Hillier

引用次数: 0

The surface characteristics of natural heulandites/clinoptilolites with different extra-framework cations 具有不同框架外阳离子的天然海泡石/clinoptilolites的表面特征

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2023-12-22 DOI: 10.1180/clm.2023.34

F. Esenli, Bala Ekinci Şans, Burcu Erdoğan, Ahmet Sirkecioğlu

引用次数: 0

Characterisation of refractory bricks from selected Cameroonian kaolinites 喀麦隆部分高岭土耐火砖的特性分析

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2023-11-29 DOI: 10.1180/clm.2023.32

Pountouenchi Amadou, Njoya André, Mbey Jean Aimé, Mache Jacque Richard, Njoya Dayirou, Yongue Fouateu Rose, Njopwouo Daniel, N. Fagel, P. Pilate, Laurent Van Parys

引用次数: 0

Characterization of the clayey sediments in the environment of exposed mudflats on the western Dead Sea shore 死海西岸裸露泥滩环境中粘土沉积物的特征

IF 1.5 4区地球科学

Clay Minerals Pub Date : 2023-11-24 DOI: 10.1180/clm.2023.33

S. Shoval

引用次数: 0

Preparation of Phase-Change Microcapsules with Illite as Filler and Their Applications in Foaming Materials 伊利石填料相变微胶囊的制备及其在发泡材料中的应用

4区地球科学

Clay Minerals Pub Date : 2023-11-06 DOI: 10.1180/clm.2023.31

Ming Li, Shuhua Zhang, Weijun Liu, Binyan Liu, Yu Wang

引用次数: 0

The importance of Fe speciation on the humic acid stability of ternary Fe(III)-montmorillonite-humic acid systems 铁形态对铁(III)-蒙脱石-腐植酸三元体系腐植酸稳定性的重要性

4区地球科学

Clay Minerals Pub Date : 2023-11-06 DOI: 10.1180/clm.2023.30

Qinkai Lei, Yahui Lv, Chengshuai Liu, Wenpo Xu, Shujie Hu, Manjia Chen, Hongling Bu

引用次数: 0

Differential dissolution of interlayer, octahedral, and tetrahedral cations of vermiculite in oxalic acid 蛭石层间阳离子、八面体阳离子和四面体阳离子在草酸中的差异溶解

4区地球科学

Clay Minerals Pub Date : 2023-10-19 DOI: 10.1180/clm.2023.27

Yu Zhang, Hongjuan Sun, Tongjiang Peng, Liming Luo, Li Zeng

引用次数: 0

Changes in the basic structure and strength deterioration of clay minerals with different hydration degrees 不同水化程度下粘土矿物基本结构变化及强度劣化

4区地球科学

Clay Minerals Pub Date : 2023-10-06 DOI: 10.1180/clm.2023.29

Jiyu Lin, Daoyong Wu, Jiwei Jia, Jing Yan, Lingtong Cai

引用次数: 0

Microstructural observations of clay-hosted pores in black shales: Implications for porosity preservation and petrophysical variability 黑色页岩中粘土孔隙的微观结构观察:孔隙保存和岩石物理变异性的意义

4区地球科学

Clay Minerals Pub Date : 2023-10-05 DOI: 10.1180/clm.2023.28

Hongjian Zhu, Shuangjian Li, Zongquan Hu, Yiwen Ju, Yanyan Pan, Manping Yang, Yanjun Lu, Mingbo Wei, Weidong Qian

{"title":"Microstructural observations of clay-hosted pores in black shales: Implications for porosity preservation and petrophysical variability","authors":"Hongjian Zhu, Shuangjian Li, Zongquan Hu, Yiwen Ju, Yanyan Pan, Manping Yang, Yanjun Lu, Mingbo Wei, Weidong Qian","doi":"10.1180/clm.2023.28","DOIUrl":"https://doi.org/10.1180/clm.2023.28","url":null,"abstract":"Abstract Typical unconventional gas/liquid plays of China were studied using field-emission/focused ion beam scanning electron microscopy (SEM) for clay mineralogy and microstructural development. The SEM microstructural investigations of clay-rich shale and mudstone reservoirs provided significant information about clay mineral type, size, distribution and aggregates, which allows for interpretations regarding porosity preservation and petrophysical variability. The major clay-hosted porosity types are interparticle clay pores, intraparticle clay pores and aggregate pores. Interparticle clay pores occur in open spaces of the clay aggregates and include four subtypes: (1) elongated pores, (2) packed pores, (3) jagged pores and (4) card-house pores. Intraparticle clay pores are present within clay particles and have mostly secondary origin. These pores are diagenesis dependent and are restricted to secondary illite particles during the transformation of clay minerals from smectite to illite. Intraparticle clay pores constitute only isolated porosity and could not contribute to hydrocarbon molecule storage and migration. Aggregate pores were predominantly encountered in association with organic–clay and pyrite–clay aggregates. In places, organic–pyrite–clay aggregates can also display polymerization, but they do not contribute significantly to overall porosity and permeability. Combining SEM morphological analyses with the software ImageJ is critical in clay microstructure and porosity analyses via semi-quantitative characterization of the 3D pore surface, 2D pore profile, pore quantity, pore size, areal porosity, etc . These visual and semi-quantitative results highlight the significance of jagged pores and pyrite–clay aggregate pores in shale gas/liquid reservoirs because they may be important facilitators of gas storage and transmission.","PeriodicalId":10311,"journal":{"name":"Clay Minerals","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134947471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Chemical and mineralogical reactions of bentonites in geotechnical barriers at elevated temperatures – review of experimental evidence and modelling progress 高温下土工屏障中膨润土的化学和矿物学反应——实验证据和模型进展综述

4区地球科学

Clay Minerals Pub Date : 2023-09-11 DOI: 10.1180/clm.2023.26

S. Kaufhold, R. Dohrmann, I. Wallis, Ch. Weber

{"title":"Chemical and mineralogical reactions of bentonites in geotechnical barriers at elevated temperatures – review of experimental evidence and modelling progress","authors":"S. Kaufhold, R. Dohrmann, I. Wallis, Ch. Weber","doi":"10.1180/clm.2023.26","DOIUrl":"https://doi.org/10.1180/clm.2023.26","url":null,"abstract":"Abstract Bentonites are proposed to be used as buffers in high-level radioactive waste repositories. The elevated temperatures in repositories may, however, affect bentonites’ desired properties. For instance, heating under dry conditions can cause cation fixation, potentially affecting swelling properties. The kinetics of mineral dissolution and precipitation reactions will equally be influenced by temperature. Redistributions of Ca-sulphates and -carbonates have been observed, as well as illitization of smectite. Illitization, however, has only been observed in laboratory experiments at large solution/solid ratios, whereas it has not yet been unambiguously identified in large-scale experiments. In many large-scale tests, cation exchange is the first observable geochemical reaction. In addition, an enrichment of Mg close to the heater is found in many such tests. The thermal gradient and (incongruent) smectite dissolution are suspected to play a role with respect to the Mg enrichment, but the underlying mechanism has not been unravelled so far. To predict the long-term performance of a bentonite buffer, numerical modelling is required in order to be able to simulate the reactions of all accompanying mineral phases. Smectites, which dominate the bentonite composition, are therefore particularly difficult to characterise, as their dissolution is often observed to be non-stoichiometric. Various model approaches exist to simulate smectite reactions, mostly based on kinetic rate reactions, ideally considering the effect of pH (congruent or incongruent dissolution), temperature and the degree of saturation of the solution. Reassessing and improving the thermodynamic/kinetic data of smectites are prerequisites for improving long-term buffer performance assessment.","PeriodicalId":10311,"journal":{"name":"Clay Minerals","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135981354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0