Members' Newsletter
April 2020
In this issue:
Creative clay (scientists)
Membership dues
Clay Minerals Society Annual Meeting - POSTPONED
Interview with leading clay scientists: Jock Churchman
International Clay Conference 2021, Istanbul
Clays and Clay Minerals: August 2019 issue
Clays and Clay Minerals: October 2019 issue
Clays and Clay Minerals: December 2019 issue
Creative clay (scientists)

The global pandemic has provided some colleagues with an opportunity to get creative.

Membership dues
Members, if you haven't already paid your dues for 2020, they are now overdue. Please contact Mary Gray in the CMS office in order to make the payment.
Clay Minerals Society Annual Meeting - POSTPONED

In response to increased COVID-19 health risks, we will not be able to hold the 2020 Clay Minerals Society Annual Meeting as scheduled on June 15-19, 2020.
After considering all of our options, the local organizing committee and the Clay Minerals Society leadership have decided to postpone the meeting until the week of October 25-30, 2020. 
The meeting will be held at the Discovery Hall on the campus of the Pacific Northwest National Laboratory, Richland, Washington, USA. 
Registrations for those who have already registered will be honored for the new dates set forth.
The option of presenting online will be available to colleagues who cannot attend the meeting in person. 
Please check back here for any further updates.
The local organizing committee and the Clay Minerals Society leadership team remain committed to achieving the goals of the meeting, such as communicating research findings, networking and exchanging ideas about current and future research, and mentoring of early career colleagues.
We hope to welcome you all here to Richland in October! 
CMS2020 Local Organizing Committee
Interview with leading clay scientists: Jock Churchman
Are there any particular scientific events – personal or public – that grabbed your attention and influenced your decision to go into science?
I began secondary school about the time that the Soviet Union launched Sputnik into space. This shocked the West (especially the US). A strong movement developed in the US - and its allies (I was in New Zealand) to invest in science education to try to catch up with "the Russians". Those of us who did well in our studies were encouraged to do science, and, although I was also interested in other academic fields, I chose to do a science degree.
How did you get interested in clay mineralogy?
I majored in Chemistry at University but was not completely convinced that I would make a career, or even do post-graduate studies, in pure Chemistry. There were no fees (!) at University then so I spent a year studying the humanities (leading to a degree in philosophy completed some 40 years later). I enjoyed the year but came to realise that I preferred the quantitative over the qualitative and there was a scholarship being offered by the New Zealand pottery and ceramics industry to study the clay mineral halloysite. This mineral was used in the New Zealand industry in lieu of kaolinite, which hardly appears in geologically young New Zealand, but the industry did not understand the quirks of halloysite. One aspect of Chemistry I had enjoyed was that of solid-state crystallography and this was important for clay mineralogy, so I applied and won a scholarhip.
If you had to tell us one success study and one which completely failed so far in your career, what would they be?
My PhD project was on the interlayer water in halloysite - essentially, why does halloysite contain interlayer water while kaolinite, otherwise similar chemically, does not. I did not solve this question during my PhD study - I found out something of how the interlayer water behaved, but not why it was present. My PhD was finished in 1970 and I continued to study halloysite - along with other clay minerals and their behaviour for all of my career. It was not until 2016 that I found, and published, a satisfactory answer to the question "why interlayer water?" It may not be the last word, but it was very satisfying for me. As to a failure, I became interested in the idea of modifying normally negatively-charged clays - minerals and soil clays - to become net positively-charged so that they would attract and trap environment pollutants, especially phosphates. With students, I did this quite succesfully in the laboratory and obtained funding to set up field trials with the modifying (non-toxic) organic chemical to test it out on real (dairy) pastures, where phosphates ran off and eutrophied stream and dams. Unfortunately, there was no effect in the field. I believe now that this is because the organic chemical is a ready food source for microbes.
How does your science influence society or how it will affect society in the future?
Halloysite is an interesting case. From being just a bulk raw material for ceramics, it has now become interesting as a nanomaterial, with many potential uses, such as for delivering drugs for e.g. cancer treatment, delivering pesticides, strengthening and fire-proofing plastics, forming scaffolds for broken bones, anti-inflammatory agents, and for water treatment, e.g. clean-up of spilled oil, among many other uses. Swelling clays are used for containing wastes as in landfills and especially for the containment of radioactive wastes. Clays are the most active inorganic component in soils where they form complexes with the vital organic matter.

With the background that you have now, in what field of clay science would you go into if you had to envisage again a PhD?
I would concentrate on the links between clays and organic matter, including microbial life, in soils. Ultimately, soils will govern the fate of humanity and clays are important as their most reactive inorganic compound.
What do you hope our science will help humanity to understand/achieve in the next 10, 50, 100 years?
A better understanding of their role in soils will be necessary as the world attempts to feed 2-3 more billion people, while helping to control liquid wastes and the gases contributing to global warming. The incorporation of drugs for cancer into clays like halloysite needs to be developed, espcially to direct the drugs to tumours. The long-proposed origin of life on the surface of clays could be tested experimentally. As well, since most clay minerals include incorporated water and clay minerals have been identified on other planets, they could be used to provide water for future space exploration. The best applications of clays may remain to be found.
What gives you the greatest satisfaction in your life/career?
Learning the value of a scientific approach, especially its emphasis on truth and honesty - now more important than ever for meeting crises, including COVID-19 and also looming climate change. As well, the privilege of helping students and younger scientists and seeing them develop as independent thinkers and useful citizens, and also the international aspect of science - surely a good example for an otherwise divided world.
What would you tell a student starting a career in clay science?
The study of clays requires the integration of many aspects of science - chemistry, geology, geography, physics, biology, for some examples. It deals with ubiquitous - and generally inexpensive and non-toxic - materials that are very useful in a wide variety of aspects of life. These include waste management, engineering, medicine, pest control and environmental clean-up. However, there are many discoveries to be made about clays and their interactions, associations and applications. As vital components of soils, for instance, they help control our supplies of food, fibre and shelter and also the environment for all life.
International Clay Conference 2021, Istanbul
The Clay Science Society (Turkey) and The Clay Minerals Society (USA) have the great pleasure to announce co-hosting of the 17th International Clay Conference 2021 in Istanbul, Turkey July 12-16, 2021 ( Proposals are invited for Thematic Sessions. To propose a Thematic Session, please send an e-mail with “Thematic Session ICC 2021” in the subject line and include the following information:
(1) Title, a short description of the thematic section, potential journal(s) for paper publication, and keywords (max. 150 words),
(2) Name(s), Title, afilliation, and contact information of the organizers with a brief academic CV and statement of syngestic activities leading to the rationale and enthusiasm for the proposed theme.
The Scientific Committee will assess and select proposals relevant to the Conference theme “NEW INTERFACES: BRIDGING CONTINENTS AND CULTURES WITH CLAYS.” The deadline for the submission of thematic session proposals is July 31, 2020. The scientific committee will review the proposals and announce the decisions on September 2020.
Please submit your proposal to the ICC chairs e-mail ( on the conference homepage: Following the announcement of the sessions, abstracts can be submitted within each of the thematic sessions. The call for abstract submission will open October 15, 2020.
Note: Thematic Session Organiser(s) must attend the 17th ICC and will serve as the Chair for their Thematic Session and help wth the judging of student presentations. Unfortunately it will not be possible to waive registration fees for session chairs.
Prof. Dr. Selahattin Kadir
Conference General Chair
Eskişehir Osmangazi University, Eskişehir, Turkey
Prof. Dr. Paul A. Schroeder
Conference Co-Chair
University of Georgia, Athens, GA, United States
Prof. Dr. Asuman G. Türkmenoglu
AIPEA Conference Representative
Middle East Technical University, Ankara, Turkey
Clays and Clay Minerals:
August 2019 issue
We have three new issues of Clays and Clay Minerals!
The first of these is the August 2019 issue and it contains the following papers, all of which were originally presented during the World Forum on Industrial Minerals, held in Qing Yang, China, October 2018.
In order to view the full-text version, Clay Minerals Society members should go to and enter their
CMS username (email address) and password. Contact Mary Gray at the CMS office for assistance.
Photocatalytic activity of La-containing mixed-metal oxides derived from layered double hydroxides to degrade methylene blue in the presence of H2O2
Minhong Xu, Mengxia Qian, Guoxiang Pan,Yuhua Guo, and Tao Wu
Preparation of a hierarchical pore zeolite with high-temperature calcination and acid-base leaching
Chengdong Wang, Jinhong Li,Xiang Wang, Zhiwei Yang, and Kaiyue Huang
Synthesis of magneitic Fe3O4 nanorings for BSA protein adsorption
Xiaonan Liu, Youkui Zhang, Liang Bian, and Jinshan Li
Surface-modified sepiolite nonofibers as a novel lubricant additive
Fei Wang, Peizhang Gao, Jinsheng Liang, Baizeng Fang, Tingting Zhang, and Huimin Liu
Competitive adsorption of uranyl and toxic trace metal ions at MFe2O4 (M = Mn, Fe, Zn, Co, or Ni) interfaces
Xiaoqiang Jiang, Jianan Nie, Liang Bian, Faqin Dong, Mianxin Song, Yi He, Huichao He, Zhiqin Zheng, Tingting Huo, Bowen Li, Nelson Belzile, Shuhui Sun, and Hao Zou
Preparation and characterization of high-viscosity montmorillonite
Limei Wu, Xiaolong Wang, Mingyu Zhao, Fei Gao, Lili Gao,  Guocheng Lv, Li Yin, and Changwei Xu
Simultaneous immobilization of Zn(II) and Cr(III) in spinel crystals from beneficial utilization of waste brownfield-site soils
Fei Wu, Yuanyuan Tang, Xingwen Lu, Chengshuai Liu, Yahui Lv, Hui Tong, Zengping Ning, Changzhong Liao, and Fangbai Li
Synthesis and adsorption desulfurization performance of modified mesoporous silica materials M-MCM-41 (M = Fe, Co, Zn)
Yu-Hua Guo, Guo-Xiang Pan, Min-Hong Xu, Tao Wu, and Yong-Ya Wang
Effects of black liquor-montmorillonite complexes on the mechanical and thermal properties of epichlorohydrin rubber
Zhipeng Yu, Yating Tan, Qionglin Luo, Xi Wang, and Shengpei Su
Photocatalytic degradation of Methylene Blue over layered double hydroxides using various divalent metal ions
Guoxiang Pan, Minhong Xu, Kai Zhou, Yue Meng, Haifeng Chen, Yuhua Guo, and Tao Wu
Photo-assisted catalytic removal of NOx over La1–xPrxCOO3/palygorskite nanocomposites: Role of Pr doping
Kenian Wei, Xiangyu Yan, Shixiang Zuo, Wei Zhu, Fenqin Wu, Xiazhang Li, Chao Yao, and Xiaoheng Liu
Effect of calcination temperature on the structure of chitosan-modified montmorillonites and their adsorption of aflatoxin B1
Chi Lian, Gaofeng Wang, Wenqiang Lv, Zhiming Sun, and Shuilin Zheng
Enver Murad - Obituary
Clays and Clay Minerals:
October 2019 issue
Geology, mineralogy, geochemistry, and genesis of bentonite deposits in Miocene volcano-sedimentary units of the Baliskesir region, western Anatolia, Turkey
Selahattin Kadir, Tacit Kulah, Hulya Erkoyun, George E. Christidis, and Raffi Arslanyan
Improved matrix methodology for calculating diffraction intensity profiles from interstratified phyllosilicates
Hongji Yuan and David L. Bish
Influence of octahedral cation distribution in montmorillonite on interlayer hydrogen counter-ion retention strength via first-principles calculations
Yayu W. Li, Cristian P. Schulthess, Kevin Co, Sanjubala Sahoo, and S. Pamir Alpay
The effects of oxyanion adsorption on reactive oxygen species generation by titanium dioxide
Mary R. Arenberg and Yuji Arai
Characterization of altered mica from Sokli, northern Finland
M. Rama, O. Eklund, S. Fröjdö, J.-H. Smätt, M. Lastusaari, and T. Laiho
atom: A MATLAB package for manipulation of molecular systems
Michael Holmboe
Enhancement of amorphous silica dissolution by interaction with six-membered ring heterocyclic compounds
Motoharu Kawano and Jinyeon Hwang
Clays and Clay Minerals:
December 2019 issue

Synthesis, structure, and ferroelectricity of a kaolinite-p--aminobenzamide intercalation compound
Shun-Ping Zhao, Yu Guo, Miao-Miao Zhu, Jie Wang, Xiao-Liang Feng…
Bentonite/Magnetite Composite for Removal of Nitrofurazone
Olga V. Alekseeva, Anna N. Rodionova, Andrew V. Noskov…
Giant Multistep crystalline vs. osmotic swelling of synthetic hectorite in aqueous acetonitrile
Raphael Kunz, Sonja Amschler, Andreas Edenharter, Lina Mayr…
Arsenic-bearing serptentine-group minerals: Mineral synthesis with insights for the arsenic cycle
P. C. Ryan, F.J. Huertas, L. N. Pincus, W. Painter
Crystallization variations in clay minerals with latitude in Jilin Province, China: A climate perspective
Yating Chen, Qing Wang, Yan Han, Mengxia Han, Jiejie Shen…
On the thermodynamic stability of illite and I-S minerals.
Stephen U. Aja
Photoreduction of Methylviologen in Saponite Clay: Effect of Methylviologen Adsorption Density on the Reaction Efficiency
Takuya Fujimura, Tetsuya Shimada, Ryo Sasai, Shinsuke Takagi
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