Table 4 Raman band positions and their assignment for hydrous andradite (488 and 532 nm excitation lines).

From: A new occurrence of hydrous andradite within pyroclastic rocks of the Sierra De Bahoruco, Dominican Republic

Raman bands (488 nm laser)

Raman bands (532 nm laser)

Assignment (Jehlicka et al. 2009)44

157

160

Translation of [SiO4] tetrahedron (Jehlicka et al. 2009)44

240

245

Translational of X2+ dodecahedral

cations (Jehlicka et al. 2009)44

353

353

Rotation of [SiO4] tetrahedra (Jehlicka et al. 2009)44

509

508

Si-O bending (Jehlicka et al. 2009)44

819

818

Si-O stretching (Jehlicka et al. 2009)44

845

851

864

870

995

999

3576

3554

OH stretching9,13