The 27Al NMR spectroscopy of glassy 2PbO.B2O3 calorimetric fluxes containing from 1.0 to 23.8 mol.% Al (from dissolved alpha -Al2O3 or NaAlSi3O8 (albite) glass) shows that approx 92% of the Al is in four-fold coordination to oxygen (Al(4)), with the remainder mostly in six-fold coordination to oxygen (Al(6)) and that the chemical shifts and Al(4)/Al(6) ratios do not change measurably in this composition range. -J.A.Z.
|Original language||English (US)|
|Number of pages||4|
|State||Published - 1987|
ASJC Scopus subject areas
- Geochemistry and Petrology