A preparation technique for TEM specimens; application to synthetic Mg-chlorite
Ferrow, Embaie; Roots, Madis
European Journal of Mineralogy Volume 1 Number 6 (1989), p. 815 - 820
published: Dec 21, 1989
manuscript accepted: Sep 6, 1989
manuscript received: Jan 18, 1989
ArtNo. ESP147050106007, Price: 29.00 €
Abstract A technique for preparing TEM specimens of synthetic sheet silicates has been developed using combined pressing and embedding of the crystallites in LR White hard resin. The specimen is relatively insensitive to atom- and electron-beam exposure and can be readily thinned by atom milling. This technique gives large thin areas suitable for TEM study. A specimen of synthetic Mg-chlorite was prepared using the technique. Lattice fringe images of this chlorite show the talc-like and brucite-like layers distinctly. Remnant 7 Å lizardite within the 14 Å chlorite as well as different polytypes of lizardite are visible. There are also missing talc-like and brucite-like layers within the chlorite resulting in areas with local deviation from ideal chlorite composition.