Factors determining the structure of the interlamellar layer of saturated vermiculites by divalent cations
Facteurs determinant la structure de la couche interlamellaire des vermiculites saturees par des cations divalents
Clay Minerals (September 1980) 15 (3): 239-248
The structure of the interlayer space of vermiculites is examined as a function of: (i) the nature of the cation (Mg, Ni, Ca, Sr, Ba) and its hydration state (two-layers, monolayer, anhydrous) and (ii) the nature of the silicate layer (magnitude and location of the lattice charge). The main factor influencing the extent of 'ordering' within the interlayer space is the exchangeable cation, in particular its size and degree of hydration. The silicate layer charge is of secondary importance inasmuch as it limits the size of the 'ordered' interlamellar regions.