Determination of the orientation of OH bond axes in layer silicates by infrared absorption
It is observed that, among the micas and related crystallizations, trioctahedral compositions exhibit an OH bond axis normal to the cleavage flake, with an infrared absorption frequency near 3700 cm.-1, but that dioctahedral compositions exhibit OH bond axes near the plane of the cleavage flake and of lesser absorption frequencies.
Journal of Physical Chemistry↗