Chemical composition in weight percentage of the AC12 clay obtained by XRF.

Table 1: Chemical composition in weight percentage of the AC12 clay obtained by XRF.

Oxide	SiO₂	Al₂O₃	Fe₂O₃	CaO	Na₂O	K₂O	MnO	TiO₂	MgO	P₂O₅	^*L.F.
Wt.%	69.41	18.51	2.20	0.05	0.08	2.91	< 0.01	0.73	0.82	0.14	5.15

^*L.F. stands for loss on fire (1000 ℃).