New perspective on Jun glaze corrosion: study on the corrosion of light greenish blue and reddish purple glazes from Juntai Kiln, Yuzhou, Henan, China

Heritage Science

Table 1 Chemical composition (wt%) of the glazes and bodies analyzed by EPMA

Samples	Area	Na₂O	MgO	Al₂O₃	SiO₂	P₂O₅	K₂O	CaO	TiO₂	MnO	Fe₂O₃	CoO	CuO	ZnO
Light greenish blue	Glaze	0.57	1.17	10.71	69.05	0.62	4.28	10.21	0.29	0.06	2.94	0.05	0.02	0.03
Light greenish blue	Body	0.27	0.78	31.84	59.39	0.10	2.74	0.63	1.10	0.05	3.05	0.01	0.01	0.02
Reddish purple	Glaze	0.37	1.03	10.51	68.38	0.41	3.94	12.22	0.33	0.06	2.47	–	0.25	0.02
Reddish purple	Body	0.21	0.75	27.98	63.69	0.06	2.77	0.72	0.85	0.06	2.85	–	0.05	–