Heritage Science

Table 2 SEM-EDX test element composition of jade in different regions (wt%)

From: Corrosion analysis of unearthed jade from Daye Zhen Tomb of Northern Zhou Dynasty

Element	C	O	Mg	Si	P	Ca	Fe
P1	7.05	45.72	8.33	8.00		30.48	0.42
P2	18.41	60.65	4.51	2.81		13.62
P3	10.67	48.85	5.43	3.87		31.18
P4	5.44	46.84	2.34	1.05	13.35	30.72	0.26
P5	2.80	41.37	1.75	0.88	11.80	41.39
P6	6.55	46.21	2.41	1.03	9.54	33.83	0.42

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