Fourth grade pottery stone, 10 samples

No.	Name	Sampling date	Vein or deposit	Mining place	Mining company	Sampling place	Grade or sort
022	USD4_03A	March 29, 1980	Sarayama V.	Denbeekoba	Ueda Tohseki	?	Fouth grade
083	USS4_07A	November 15, 1983	Sarayama V.	Tsurugigasako	Ueda Tohseki	Kawanahata mine ?	Fourth grade
074	USKS401A	March 30, 1982	Kaigan V.	Kawanohata	Ueda Tohseki	North	Fourth grade, Shima (stripes), SK20
076	USKH403A	March 30, 1982	Kaigan V.	Kawanohata	Ueda Tohseki	North	Fourth grade, Henshoku (discoloration), SK26
201	HTO4_02A	June 11, 1981	Kaigan V.	Ohsako	Harada Tohseki	Right wall	Good rock, Fourth grade?
063	UMOS407A	November 15, 1983	Murayama V.	Odatoko Furuyashiki	Ueda Tohseki	Border between Nishizima Tohseki	Shima (stripes), fourth grade
204	HTKT401S	June 11, 1981	Tanosako V.	Kyogamine	Harada Tohseki	Outside drift	Fourth grade, low SK
107	KGG4_03S	March 26, 1981	Murayama V.	Gosoh	Kiyama Tohseki	Incline shaft working face	Fourth grade, SK19, kaolin / sericite=1
108	KGG4_04A	March 26, 1981	Murayama V.	Gosoh	Kiyama Tohseki	Incline shaft wall	Good rock of fourth grade, middle of bonanza
109	KGG4_05A	March 26, 1981	Murayama V.	Gosoh	Kiyama Tohseki	Stock yard of incline shaft	Bad rock of fourth grade, SK16-17

Colors of the milled samples
No.	Name	X	Y	Z	Whiteness (Hunter)	L	a	b	Whiteness (Lab)
022	USD4_03A	71.94	71.91	59.00	50.00	84.80	3.03	18.11	76.16
083	USS4_07A	72.71	72.04	59.89	50.75	84.88	4.38	17.58	76.40
074	USKS401A	69.39	68.09	49.97	42.35	82.52	5.70	21.86	71.44
076	USKH403A	69.93	69.27	69.34	58.76	83.23	4.33	8.86	80.54
201	HTO4_02A	62.07	60.59	43.97	37.26	77.84	6.12	21.00	68.87
063	UMOS407A	83.62	83.72	84.98	72.02	91.50	3.01	8.98	87.27
204	HTKT401S	58.25	56.29	38.81	32.89	75.03	7.29	21.85	66.03
107	KGG4_03S	60.92	60.34	49.90	42.29	77.68	4.05	16.29	72.07
108	KGG4_04A	71.09	70.27	58.35	49.45	83.83	4.68	17.41	75.78
109	KGG4_05A	71.73	71.39	64.52	54.68	84.49	3.68	13.87	78.87

Chemical compositions (wt%)
No.	Name	SiO2	Al2O3	Fe2O3	TiO2	CaO	MgO	Na2O	K2O	Ig.loss
022	USD4_03A	77.20	15.39	0.73	0.01	0.07	0.19	0.13	3.41	2.38
083	USS4_07A	79.97	13.93	0.56	0.01	0.06	0.07	0.07	2.94	2.10
074	USKS401A	77.40	15.12	0.77	0.01	0.09	0.11	0.09	3.36	2.57
076	USKH403A	76.90	15.35	0.78	0.01	0.08	0.16	0.07	3.80	2.36
201	HTO4_02A	75.83	14.59	1.40	0.05	0.06	0.11	4.19	2.27	1.31
063	UMOS407A	77.24	15.39	0.39	0.02	0.04	0.12	1.26	3.19	2.13
204	HTKT401S	76.13	14.95	1.25	0.05	0.09	0.06	3.14	2.08	2.04
107	KGG4_03S	75.22	14.39	0.75	0.01	1.15	0.11	2.33	3.35	2.47
108	KGG4_04A	77.26	14.67	0.72	0.01	0.88	0.09	0.05	2.06	4.03
109	KGG4_05A	74.55	14.56	0.69	0.01	0.93	0.05	3.02	3.94	2.10

Mineral compositions (wt%)
No.	Name	Quartz	Sericite	Kaolin mineral	Feldspar	Calcite	Siderite
083	USS4_07A	54.44	36.53	8.51	0.50	0.00	0.02
074	USKS401A	60.79	24.59	13.30	1.03	0.25	0.04
076	USKH403A	58.83	34.07	5.09	1.20	0.41	0.40
201	HTO4_02A	47.41	8.32	1.56	42.36	0.35	0.00
063	UMOS407A	49.70	30.64	7.83	11.75	0.00	0.08
204	HTKT401S	42.73	16.39	7.60	33.28	0.00	0.00
107	KGG4_03S	42.97	22.18	8.85	23.95	2.05	0.00
108	KGG4_04A	51.23	24.26	22.42	0.50	1.59	0.00
109	KGG4_05A	32.72	33.76	4.98	26.90	1.64	0.00

Results of TGA and Colors of the Powder Samples after Measuring
The conditions for TGA were sample weight : about 180mg, heating rate : 20°C/min, ended temperature : 1,000°C. LT : Total weight loss, L400 : Weight loss of 400-1,000°C.
No.	Name	LT (wt%)	L400 (wt%)	X	Y	Z	Whiteness (Hunter)	L	a	b	Whiteness (Lab)
022	USD4_03A	3.05	2.14	63.35	58.74	47.09	39.91	76.64	13.42	17.22	68.03
083	USS4_07A	2.65	1.94	63.82	59.51	48.13	40.79	77.14	12.67	17.01	68.82
074	USKS401A	3.26	2.33	61.85	57.14	40.23	34.09	75.59	13.77	21.36	64.76
076	USKH403A	3.31	2.16	62.80	62.10	64.55	54.70	78.80	4.34	6.60	77.38
201	HTO4_02A	1.77	1.08	48.84	44.06	30.05	25.47	66.38	15.18	19.62	58.22
063	UMOS407A	2.60	2.03	81.65	81.10	81.39	68.97	90.06	4.24	9.45	85.64
204	HTKT401S	2.43	1.80	47.17	41.85	27.87	23.62	64.69	16.94	19.74	56.14
107	KGG4_03S	2.85	2.27	57.17	53.09	40.29	34.14	72.86	12.55	18.22	64.99
108	KGG4_04A	4.44	3.83	58.57	54.38	45.07	38.19	73.74	12.72	15.38	67.02
109	KGG4_05A	2.38	1.97	64.62	61.88	52.59	44.57	78.66	8.97	15.43	72.18

Results of TMA and Colors of the Sintered Samples after Measuring
The conditions for TMA were compaction pressure : 250MPa, pellet diameter : 10mm, thickness : about 3mm, heating rate : 10°C/min, loading : 10g. W10 : Contents of particles larger than 10µm, SM : Maximum shrinkage, T0 : Temperature at the maximum shrinkage, T5 : Temperature at the expansion coefficient becomes 0.0005/°C, TS5 : Temperature rectified using the correlative equation, TSK : Nominal temperature equivalent to its SK.
No.	Name	W10 (wt%)	SM (%)	T0 (°C)	T5 (°C)	TS5 (°C)	TSK (°C)	SK	X	Y	Z	W (Hunter)	L	a	b	W (Lab)
022	USD4_03A	40.3	7.79	1392	1400	1400	1554	20+	60.59	61.93	65.30	55.34	78.70	-0.29	5.89	77.89
083	USS4_07A	47.7	8.82	1433	1444	1438	1585	26+	60.71	62.05	67.06	56.83	78.77	-0.28	4.67	78.26
074	USKS401A	50.5	6.93	1419	1429	1421	1572	26	58.87	60.30	64.04	54.27	77.65	-0.57	5.46	76.99
076	USKH403A	52.8	8.02	1391	1399	1390	1545	20+	55.82	57.12	60.82	51.54	75.58	-0.43	5.19	75.03
201	HTO4_02A	50.4	9.27	1252	1263	1255	1387	13+	40.77	40.31	34.60	29.32	63.49	3.52	12.13	61.37
063	UMOS407A	47.9	7.83	1371	1386	1380	1536	20	71.43	73.05	79.79	67.62	85.47	-0.39	4.48	84.79
204	HTKT401S	53.0	8.60	1273	1284	1275	1413	14	31.88	29.62	21.23	17.99	54.42	9.32	14.97	51.13
107	KGG4_03S	51.6	9.06	1259	1269	1261	1394	13+	50.95	51.08	51.86	43.95	71.47	2.18	7.01	70.54
108	KGG4_04A	47.1	5.63	1390	1399	1394	1549	20+	49.67	50.38	54.60	46.27	70.98	0.70	4.08	70.69
109	KGG4_05A	49.6	9.21	1237	1254	1247	1374	13-	49.28	49.22	50.82	43.07	70.16	2.61	6.16	69.42

Last updated: August 1997