The effect of aluminium on the infra-red spectra of 7 Å trioctahedral minerals
- 1 March 1979
- journal article
- Published by Mineralogical Society in Mineralogical Magazine
- Vol. 43 (325) , 141-148
- https://doi.org/10.1180/minmag.1979.043.325.14
Abstract
Summary: The substitution of 2A13+ for Si4+ +M2+ (M = Mg or Ni) has been studied by infra-red spectroscopy in 7 Å trioctahedral minerals over the composition range from Al = 0.00 to Al = 2.00. Significant differences are observed in the infra-red spectra and these make possible an estimation of the amount of Al in tetrahedral coordination. The most striking effect of the substitution is observed in the stretching vibrations of the outer hydroxyl groups and that of the silicate anion.The aluminous Mg-serpentines can be readily distinguished from their analogues, the aluminous Niserpentines, by the absence of the Mg-OH absorption band between 570 and 615 cm−1 in the latter.Keywords
This publication has 11 references indexed in Scilit:
- The Layer SilicatesPublished by Mineralogical Society ,2015
- Hydroxyl-stretching frequencies of serpentine mineralsMineralogical Magazine, 1975
- The Relationship between the I.R. Spectra of Serpentines and Their StructuresClays and Clay Minerals, 1975
- Phase Equilibria in the System MgO-Al2O3-SiO2-H2O: Chlorites and Associated MineralsMineralogical Magazine, 1973
- SYNTHETIC Mg-CHLORITE IN RELATION TO NATURAL CHLORITEMineralogical Journal, 1972
- Replacement of OH by OD in layer silicates, and identification of the vibrations of these groups in infra-red spectraMineralogical Magazine, 1970
- Polytypism of Trioctahedral 1:1 Layer SilicatesClays and Clay Minerals, 1969
- Far infra-red absorption spectra of layer silicatesInorganica Chimica Acta, 1967
- Infrared Spectra of Layer‐Structure SilicatesJournal of the American Ceramic Society, 1961
- Tubular Crystals of Chrysotile AsbestosScience, 1950