Forelesninger holdt ved Advanced Study Institute of Feldspar - Oslo 1962
Lectures held at Advanced Study Institute of Feldspar - Oslo 1962
Infra-red absorption spectra and nuclear magnetic resonance measurements of several alkalifeldspars (sanidine, adularia. microcline, albite and heattreated albite) are presented, and the problems of the Al/Si-distribution within these feldspars are discussed. The most direct conclusion could be drawn from the NMR-measurements; they proved that in microcline(low) and albite(low) Al occupies only one of the four available lattice complexes and that there is nearly random distribution in the high temperature states.