Robuta

https://repository.geologyscience.ru/items/9d6a1521-12e6-43fc-855d-861d34c4b7d6 RE-EXAMINATION OF YUSHKINITE: CHEMICAL COMPOSITION, OPTICAL PROPERTIES AND INTERLAYER CHARGE... The hydroxy-sulphide yushkinite from the type deposit has been re-examined by electron probe microanalysis and reflectance measurement. The EPMA indicates... chemical compositionoptical propertiesexaminationyushkiniteinterlayer