...(Association International pour 1 'etude des Argiles), the word "clay" refers to "a naturally occurring material composed primarily of fine-grained minerals,...water contents and will harden when dried or fired. Although clay usually contains phyllosilicates, it may contain other materials that impart plasticity...

...a particle size <4um [1], although the modern tendency is to define clays as a naturally occurring material composed primarily of finegrained minerals, which is generally plastic at appropriate water content and will harden with dried or fire [2]. Clays have been one of the most important minerals...

...diameter, (ii) A soil textural class, (iii) In reference to clay mineralogy, a naturally occurring material composed primarily of fine-grained minerals,...water contents and will harden when dried or fired. Although clay usually contains phyllosilicates, it may contain minerals with other structures. clay...

...clavi. clay Iclay seil A naturally occurring material composed primarily of fine-grained minerals. It is generally plastic at appropriate water contents and will harden when dried or fired (Guggenheim and Martin, 1995). clay [eng] A term used to describe cohesive particles having diameters...