Synthesis of uvarovite

Abstract

IN previous investigations of the synthesis of the garnet, uvarovite (Ca3Cr2Si3O12), various temperatures have been given for the synthetic product to be obtained. These temperatures rango from 855°to 1,490°C (ref. 1), with Glasser and Osborn2 reporting the optimum temperature as 1,370°± 10°C. In all cases, however, this mineral was not the sole reaction product, but was accompanied by the formation of αCaSiO3 and Cr2O3. © 1963 Nature Publishing Group.