~1H and ~23Na NMR Spectroscopy of H_2O-H_2-Bearing Sodium Silicate Glasses

摘要

The analysis of the redox conditio0ns of rock formation suggests that many magmatic complexes were generated in reduced environments in the presence of molecular hydrogen,whose mole fraction in the fluid phase may be considerable [1,2].It was shown that H_2O-H_2 fluid with a hydrogen mole fraction up to 0.7 reacted with albite melt to form OH groups and molecular water [3].At a higher hydrogen content in the fluid phase,the spectra of albite glasses show an additional component with a width of 1-2 kHz,which was preliminary attributed by us to a system of magnetically diluted OH groups.Luth et al.[4] detected molecular hydrogen in the Raman spectra of albite glasses obtained under high pressures (15-20 kbar) of H_2O-H_2 lfuid (X_(H_2)=0.18-0.23).