THE EFFECT OF LATTICE SUBSTITUTIONS ON THE DERIVATION OF QUANTITATIVE SITE POPULATIONS FROM THE MÖSSBAUER SPECTRA OF 2 : 1 LAYER LATTICE SILICATES B. A. GOODMANJ. Phys. Colloques, 37 C6 (1976) C6-819-C6-823DOI: https://doi.org/10.1051/jphyscol:19766172