1. The optical absorption spectra of iron in six-coordinate sites in chlorite, biotite, phlogopite and vivianite.;Faye;Some aspects of pleochroism in the sheet silicates. Can. Miner.,1968
2. The effect of charge transfer processes on the colour and pleochroism of amphiboles.;Faye;Can. Miner.,1970
3. Optical absorption spectra of clay minerals.;Karickhoff;Clays Clay Miner.,1973
4. Ferrousferric ratio and C.E.C. changes on deferration of weathered micaceous vermiculites.;Roth;Isr. J. Chem.,1968
5. Reduction and oxidation of Fe3+ in dioctahedral smectite - 1: reduction with hydrazine and dithionite.;Rozenson;Clays Clay Miner.,1976