Table 2.

Detailed elemental composition of S1.5 sample.

Element	Weight%	Atomic%	Net int.	Error%
CK	1.09	2.34	1.60	17.56
OK	32.39	52.02	59.40	10.72
PK	18.76	15.56	221.90	3.03
CaK	42.57	27.29	289.70	2.31
TiK	5.19	2.79	25.40	5.75