Characterizing ancient jade by on-site analysis in Sanxingdui, China

Heritage Science

Table 2 Chemical composition analysis of the four jade artefacts(wt%)

Sample	SiO₂	MgO	CaO	FeO_x	Al2O3	MnO	CuO	P₂O₅	K₂O	TiO₂	Total
Zhang
Green	63.17	23.56	10.86	0.53	1.12	0.00	0.24	0.11	0.30	0.00	99.89
Red	61.24	21.61	10.60	1.31	4.63	0.14	0.02	0.10	0.28	0.04	99.97
White	61.62	22.78	11.27	1.19	2.67	0.15	0.03	0.08	0.15	0.00	99.94
Guan
Green	62.01	24.75	10.66	0.45	1.62	0.00	0.11	0.10	0.24	0.00	99.95
Orange	62.99	22.22	10.28	1.34	2.19	0.00	0.27	0.13	0.39	0.03	99.85
Huan
Green	63.83	22.27	11.45	0.63	0.93	0.00	0.34	0.15	0.32	0.00	99.93
Orange	64.54	20.02	13.05	0.99	0.35	0.00	0.50	0.14	0.36	0.00	99.96
Zao
Green	62.51	23.49	10.45	0.89	1.93	0.00	0.18	0.11	0.32	0.02	99.90
White	61.36	20.70	11.04	1.26	4.82	0.17	0.17	0.14	0.27	0.04	99.97