Table 3.

The EDS analysis of points in Figure 5.

Point A			Point B			Point C
Elem.	Wt.%	At. %	Elem.	Wt.%	At. %	Elem.	Wt.%	At. %
C	11.07	18.81	C	6.68	13.14	C	14.34	20.72
O	45.47	58.00	O	37.88	55.93	O	56.19	60.95
Al	10.72	8.11	Mg	4.33	4.21	Na	0.23	0.18
Si	8.41	6.11	Al	6.75	5.91	Mg	0.20	0.14
Ca	0.28	0.14	Si	3.98	3.34	Al	12.96	8.33
Ti	0.63	0.27	Ca	1.81	1.07	Si	14.95	9.23
Fe	23.43	8.56	Ti	1.13	0.56	K	0.58	0.26
			Mn	0.86	0.37	Ca	0.15	0.06
			Fe	36.59	15.48	Ti	14.34	20.72
						Fe	0.40	0.13
Point D			Point E			Point F
Elem.	Wt.%	At. %	Elem.	Wt.%	At. %	Elem.	Wt.%	At. %
C	17.68	31.82	C	4.28	8.10	C	2.28	6.44
O	31.78	42.93	O	42.80	60.74	O	21.39	45.36
Na	0.20	0.19	Mg	7.63	7.13	Mg	1.29	1.80
Mg	0.52	0.46	Al	4.80	4.04	Al	0.58	0.73
Al	4.83	3.87	Si	5.32	4.30	Si	0.32	0.38
Si	5.91	4.55	Ca	8.57	4.85	Ca	1.01	0.85
K	0.42	0.23	Ti	0.36	0.17	Mn	1.84	1.14
Ca	0.53	0.29	Mn	0.86	0.36	Fe K	71.29	43.30
Ti	13.91	6.28	Fe K	25.37	10.31
Fe	24.22	9.38

Elem.: Elements. Wt.: weight. At.: atomic.