ABSTRACT
Sepiolite and palygorskite clay minerals have received very less attention than other clay minerals. This neglect partly reflects the fact that these clay minerals are less common than the layer phyllosilicates (Singer and Galán, 1984). Despite this, however, these minerals have been known for centuries because of their many and useful properties. Their unusual crystal structure is mainly responsible for their unique physicochemical properties and important characteristics related to surface area, porosity, dehydration, and sorption active centers.
