title: Spectroscopic study of chromium, iron, OH, fluid and mineral inclusions in uvarovite and fuchsite.
abstract: Octahedrally-coordinated Cr(3+) possesses peculiar spectral features which made easy to identify it in minerals, even in minor amounts. Chromium has been studied in uvarovite and fuchsite by optical and EPR spectra. Optical, EPR, FT-infrared and EPMA studies have also let to determine the presence of Fe(3+) and Ti(3+) and fluid inclusions within uvarovite and fuchsite. Absorption and scattering effects on the optical spectra obtained for Cr-bearing samples, resulting from the presence of inclusions, are also discussed in this work.
authors.affiliation: Departamento de Mineraloía y Petrología, Facultad de Ciencias, Universidad de Granada, Fuentenueva S/N, 18002 Granada, Spain. asnavas@ugr.es
authors.forename: Antonio
authors.initials: A
authors.lastname: Sanchez Navas
authors.forename: B J
authors.initials: BJ
authors.lastname: Reddy
authors.forename: Fernando
authors.initials: F
authors.lastname: Nieto
mesh_terms: D002857:Chromium / Q000737:chemistry*; D003627:Data Interpretation, Statistical; D004578:Electron Spin Resonance Spectroscopy; D006878:Hydroxides / Q000737:chemistry*; D007501:Iron / Q000737:chemistry*; D008855:Microscopy, Electron, Scanning; D008903:Minerals / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D006878:Hydroxides; D008903:Minerals; D002857:Chromium; D007501:Iron