stretching and bending vibrations of H2O molecules which do not form strong hydrogen bonds). These bands are...Mg-poor schorl from the Limoeiro mine, Murta, Minas Gerais, Brazil, the band of OH groups in the W site coordinated...with water molecules. However, the available data do not allow us to determine the degree of protonation...[nominally, Fe2+Mn2+2(PO4)2·3H2O] from Cigana mine, Brazil (a), landesite [nominally, Fe3+Mn2+2 (PO4)2(OH)·]...IR spectra of melanophlogite from other localities do not show any presence of methane molecules. In the |
Boca Rica claim, Sapucaia do Norte, Galiléia, Minas Gerais, Brazil