Nalazite se na CroRIS probnoj okolini. Ovdje evidentirani podaci neće biti pohranjeni u Informacijskom sustavu znanosti RH. Ako je ovo greška, CroRIS produkcijskoj okolini moguće je pristupi putem poveznice www.croris.hr
izvor podataka: crosbi

Raman and Infrared spectroscopic characterization of the phosphate mineral paravauxite Fe2+Al2(PO4)2(OH)2•8H2O (CROSBI ID 195022)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Frost, Ray, L. ; Scholz, Ricardo ; Lópes, Andrés ; Xi, Yunfei ; Žigovečki Gobac, Željka ; Campos Horta, Laura Frota Raman and Infrared spectroscopic characterization of the phosphate mineral paravauxite Fe2+Al2(PO4)2(OH)2•8H2O // Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 116 (2013), 491-496. doi: 10.1016/j.saa.2013.07.048

Podaci o odgovornosti

Frost, Ray, L. ; Scholz, Ricardo ; Lópes, Andrés ; Xi, Yunfei ; Žigovečki Gobac, Željka ; Campos Horta, Laura Frota

engleski

Raman and Infrared spectroscopic characterization of the phosphate mineral paravauxite Fe2+Al2(PO4)2(OH)2•8H2O

We have undertaken a vibrational spectroscopic study of paravauxite the Siglo XX mine, Bustillo Province, northern of Potosí department, Bolivia. This mine is important source for rare and unusual secondary phosphate minerals and is the type locality for a number of rare phosphates such as vauxite, sigloite, metavauxite and for jeanbandyite. The chemical formula of the studied sample was determined as Fe2+0.95, (Al0.07)∑1.02(Al)2.09(PO4)1.97(OH)1.98.7.90(H2O. The Raman spectrum is dominated by an intense Raman band at 1020 cm-1 assigned to the PO43- ν1 symmetric stretching mode. Low intensity Raman bands found at 1058, 1115 and 1148 cm-1 are assigned to the PO43- ν3 antisymmetric stretching vibrations. Raman bands of paravauxite at 537, 570, 609 and 643 cm-1 are assigned to the ν4 PO43- bending modes whilst the Raman bands at 393 and 420 cm-1 are due to the ν2 PO43- bending modes. The Raman spectral profile of paravauxite in the hydroxyl stretching region is broad with component bands resolved at 3086, 3215, 3315, 3421, 3505 and 3648 cm-1. Vibrational spectroscopy enables the assessment of the molecular structure of paravauxite to be undertaken.

paravauxite; phosphate; Raman spactroscopy; Infrared spectroscopy

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

nije evidentirano

Podaci o izdanju

116

2013.

491-496

objavljeno

1386-1425

10.1016/j.saa.2013.07.048

Povezanost rada

Geologija

Poveznice
Indeksiranost