Table 3 Peak positions in the Raman spectra of different mineral phases of alteration of ancient Chinese jade artifacts.
Mineral phases | Chemical formula | Major Raman band positions (cm−1) | Ancient jade artifact | |
|---|---|---|---|---|
1 | Tremolite | Ca2(Mg, Fe)5Si8O22(OH)2 | 177, 221, 368, 392, 673, 1029, 1057 | All artifacts |
2 | Malachite | Cu2(CO3)(OH)2 | 145, 175, 265, 352, 431, 527, 715, 752, 1089 | JS-2 |
3 | Tenorite | CuO | 298, 346, 610 | JS-1 |
4 | Pyromorphite | Pb5(PO4)3Cl | 430, 915 | JS-13, JS-15 |
5 | Azurite | Cu3(CO3)2(OH)2 | 397 | JS-7 |
6 | Diaboleite | Pb2CuCl2(OH)4 | 228, 677, 781, 1070 | JS-6 |
7 | Arsenolite | As2O3 | 457 | JS-2 |
