Hokkaido / Name of sample: HT-1

No.	District	Name of Pyroclastic Deposite	Age
006	Date, Hokkaido	Tohya pumice flow(IV)	15,000

Particle Size Distribution (wt%).

-0.038mm	-0.075mm	-0.15mm	-0.3mm	-0.6mm	-1.18mm	-2.36mm	-4.75mm
14.0	21.3	29.8	36.5	43.6	53.8	67.2	79.6

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X-ray powder diffraction pattern (F: feldspar, Q: quartz)

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Chemical Compositions and Content of Volcanic Glass (wt%).

SiO2	Al2O3	Fe2O3	TiO2	CaO	MgO	Na2O	K2O	Ig.loss	Total	Content of Volcanic Glass
72.10	13.36	2.82	0.26	0.81	0.94	4.00	2.29	3.66	100.24	55.16

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XRD pattern of separated volcanic glass	DTG pattern of separated volcanic glass

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Chemical Compositions of Separated Vocanic Glass (wt%).

SiO2	Al2O3	Fe2O3	TiO2	CaO	MgO	Na2O	K2O	Ig.loss	Total
74.14	12.89	1.56	0.08	0.34	0.36	4.37	2.92	3.55	100.21