Transformation Mechanism of Fluormica to Fluoramphibole in Fluoramphibole Glass Ceramics

Table 2

Composition change of sandwich samples isothermally heated at 820°C and 900°C (wt%).

Element	820°C			900°C
	0 h		2 h	0 h		2 h
	O	29.44	19.74	35.80	52.93	39.36	45.65
Si	42.35	31.83	35.20	25.25	25.37	30.57
Na	8.34	2.27	4.38	7.15	3.50	8.18
Ca	9.00	3.04	5.69	7.70	1.96	4.39
F	1.35	11.36	4.40	1.01	10.36	6.22
Mg	5.41	21.01	10.20	1.34	10.97	2.06
Al	1.72	5.59	1.67	1.52	4.40	1.41
K	2.39	5.16	2.66	3.10	4.08	1.52
Total	100.00	100.00	100.00	100.00	100.00	100.00