Table 2 Main Raman characteristic bands for phases of CS5 green layer

From: Degradation of emerald green: scientific studies on multi-polychrome Vairocana Statue in Dazu Rock Carvings, Chongqing, China

Raman (cm−1)

Vibrational assignment

Lavendulan

 853

ν1 (AsO4)

 544

ν4 (AsO4)

 410

ν2 (AsO4)

 342

ν2 (AsO4)

Baryte

 987

ν1 (SO4)

 618

ν4 (SO4)

 453

ν2 (SO4)

Gypsum

 1008

ν1 (SO4)

 413

ν2 (SO4)

Cerussite

 1054

ν1 (CO)

Whewellite

 1491

να (C=O)

 1464

να (C=O)

 897

ν (C–C)

 595

ν (M–O)

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