Hectorite

Hectorite is the common name for a relatively rare, naturally occurring clay and also the name of the active mineral in the clay.  Hectorite is a trioctahedral, magnesium based smectite clay.  The unique properties of the hectorite active mineral are very small platelet size, an elongated platelet structure with an inherent negative charge counterbalanced by exchangeable sodium (Na⁺) ions, light color with low iron content and high viscosifying ability in water.

Hectorite is used in applications that require lighter color, higher viscosity, and thermal stability.  Commercial applications include ceramics, cosmetics, high temperature organoclays for oil well drilling and paints/coatings.