New Data on Chemical Composition and Vibrational Spectra of Magnetoplumbite-Group Minerals

Resumo

Magnetoplumbite-group minerals from various paragenetic assemblages, including a xenolith of altered garnet lherzolite from the Obnazhennaya kimberlite pipe in Yakutia, sulfide-free metasomatic Pb–Zn–Sb ore from the Pelagonian massif in the Republic of North Macedonia, and some other metasomatic occurrences have been studied with electron microprobe, as well as using IR and Raman spectroscopy. New data on isomorphic substitutions and crystal chemistry of the magnetoplumbite-group minerals have been obtained. Three potentially new mineral species belonging to this group have been identified: Al-dominant analogue of yimengite, Ba-dominant analogue of nežilovite, and Mn-dominant analogue of plumboferrite.