The first 10B NMR experiments on borate glasses & related polycrystals using modern,fixed field, pulsed NMR in combination with a secondary field sweep coil are reported. All six transitions from I=3 nucleus could be observed. The spectra obtained have been compared with those simulated using third order perturbation theory & it was determined the quadruple parameters for 10B in various systems with a precision which is more than an order of magnitude improved when compared with values reported to date from central transition 11B MAS NMR. The program used to simulate the data also allows a distribution of quadruple parameters to be fitted for each distinct site, thus taking into account the distribution of environments for a given site in a glass.
