Clays and Clay Minerals aims to present the latest advances in research and technology concerning clays and other fine-grained minerals, including but not limited to areas in agronomy, ceramics, colloid chemistry, crystallography, environmental science, foundry engineering, geochemistry, geology, medicinal chemistry, mineralogy, nanoscience, petroleum engineering, physical chemistry, sedimentology, soil mechanics, and soil science. Clays and Clay Minerals exists to disseminate to its worldwide readership the most recent developments in all of these aspects of clay materials. Manuscripts are welcome from all countries. Clays and Clay Minerals is the official publication of The Clay Minerals Society. The Editor-in-Chief is Professor Joseph W. Stucki. Contact him at jstucki@illinois.edu Find out about Open Access publishing at https://www.springer.com/journal/42860/open-access-publishing. Springer has ‘Institutional Open Access Agreements’ in place in many countries. This may mean that you are entitled to publish your paper Open Access without direct cost to you. For further information see https://www.springernature.com/gp/open-research/institutional-agreements.