- Type
- Raman scattering
- Comments
- activated infrared mode
- Assignments summary
- Characteristics summary
| Assignment | Symmetry | Mode | Specie(s) | Molecule/Atom | Bond | Multiplicity | Degeneracy | Contribution | Resonance |
|---|---|---|---|---|---|---|---|---|---|
| ν4b (Eu) | Eu | deformation in-p | (CO3)2- | (CO3)2- | mode degeneracy | double | extracted |
| Peak position (cm-1) |
Center position (cm-1) |
Width (cm-1) |
Shape | Asymmetry factor | Peak intensity (cm-1) |
Peak intensity relative | Peak strength | Integrated intensity (cm-2) |
Integrated intensity relative | Integrated strength | Temperature (K) |
Pressure (bar) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 745 ± 2.25 | - | 15 ± 3.5 | symmetric | 0.008 | vw | 0.016 | vw | 295.0 | 1 |
- Label
- ν4b (Eu)
- Symmetry
- Eu
- Category
- fundamental vibration
Evaluation
- Level
- partly assigned
- Evaluation
- uncertain
- Comments
- or possible lifting of degeneracy
- Contribution level
- extracted
| # | Multiplicity type | Degeneracy | Other band |
|---|---|---|---|
| 1 | mode degeneracy | double | (CO3)2- |
- Primary specie
- (CO3)2-
- Label (type)
- ν4b (deformation in-p) Bond: (CO3)2-
- Comments
- O-C-O in-plane bdeformation
Vibration modes
- Composition
- 0.05
- Texture
- crystal in plot
- Temperature
- 295.0 ± 5.0 K
Temperature
- Pressure
- 1 bar
Pressure
- Laser wavelength
- 532.0 nm
- Sample orientation mode
- unoriented
- Method #1
- various
- Overlap
- strongly blended
- Peak
- 745 ± 2.25 cm-1 (fit peak)
- Evaluation
- validated
- Quality
- B
- Comments
- increases with Mg fraction
- FWHM
- 15 ± 3.5 cm-1 (fit fwhm)
- Shape
- symmetric
- Evaluation
- validated
- Quality
- D
- Comments
- decreases with Mg fraction
- Method
- fit intensity
- Relative intensity
- 0.008 ± 0.005
- Strength
- very weak (vw)
- Evaluation
- validated
- Quality
- E
- Comments
- decreases with Mg fraction
- Method
- width x peak intensity
- Relative intensity
- 0.016 ± 0.013
- Strength
- very weak (vw)
- Evaluation
- recommended
- Quality
- E
- Comments
- decreases with Mg fraction
- Publication
- SSHADE spectra
-
- Schmitt, Bernard; Montagnac, Gilles (2025): MIR-FIR normalized Raman spectrum (532 nm) of Mg-Mn-Siderite (St-Georges d'Hurtières) - grain M2-F1 - Mg# = 7.65%. Version 1. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data.
- Schmitt, Bernard; Montagnac, Gilles (2025): MIR-FIR normalized Raman spectrum (532 nm) of Mg-Siderite (Terril du Villaret, France) - grain M4-H0 - Mg# = 24.7%. Version 1. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data.
- Schmitt, Bernard; Montagnac, Gilles (2025): MIR-FIR normalized Raman spectrum (532 nm) of Mg-Siderite (Mines de La Mure, France) - grain M3-E8a - Mg# = 39.2%. Version 1. SSHADE/DRIMS (OSUG Data Center). Dataset/Spectral Data.