Table 2.

Chemical compositions of glass of the APF igneous rock. Abbreviations: R = rhyolite.

Sample Label	APF409	APF409	APF409	APF409	APF409	APF409	APF409	APF411	APF411	APF411	APF411	APF411	APF411	APF120	APF120	APF120	APF120	APF106	APF106	APF106	APF106
Rock Type	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R	R
SiO2	77.84	77.46	77.28	80.17	79.76	78.12	77.66	80.12	79.07	79.00	77.81	78.44	78.13	75.51	75.88	75.72	74.74	74.91	75.02	74.44	75.21
TiO2	0.09	0.13	0.10	0.11	0.07	0.11	0.14	0.16	0.17	0.16	0.26	0.19	0.17	0.13	0.15	0.16	0.26	0.21	0.24	0.25	0.21
Al2O3	12.14	12.40	12.03	11.53	11.68	12.21	12.05	10.13	11.83	11.46	11.22	11.45	12.03	12.91	12.82	12.72	13.28	13.08	13.07	13.21	13.14
Fe2O3(tot)	0.78	0.82	0.71	0.41	0.47	0.70	0.70	0.75	0.88	0.89	1.09	0.75	0.92	1.15	1.04	1.23	1.44	1.36	1.51	1.54	1.34
MnO	0.02	0.04	0.03	0.07	0.05	0.06	0.00	0.03	0.06	0.04	0.06	0.02	0.06	0.04	0.02	0.02	0.05	0.04	0.02	0.06	0.03
MgO	0.08	0.10	0.08	0.00	0.06	0.09	0.06	0.12	0.10	0.08	0.28	0.04	0.06	0.03	0.04	0.04	0.06	0.06	0.05	0.07	0.04
CaO	0.84	0.88	0.92	0.92	0.91	0.65	0.88	0.63	0.56	0.52	0.43	0.55	0.65	1.69	1.02	1.41	2.03	2.24	2.11	2.27	2.21
Na2O	2.14	2.35	2.33	4.28	3.50	2.34	2.17	1.57	2.60	2.59	2.30	2.58	2.77	2.98	3.01	3.22	3.54	3.44	4.91	4.89	3.57
K2O	5.71	5.80	5.59	2.87	3.85	5.82	5.85	4.50	5.14	5.33	5.10	5.12	5.22	5.22	5.34	5.41	5.01	3.99	4.21	4.03	5.18
Sum	99.64	99.98	99.07	100.35	100.35	100.09	99.51	98.01	100.40	100.07	98.56	99.14	100.02	99.66	99.31	99.93	100.41	99.33	101.14	100.76	100.94