Pottery-Stone Database / Tomioka Deposit

Tomioka Deposit, 12 samples

Results of TGA & Colors of the powder samples after measuring

Results of TMA & Colors of the sintered samples after measuring

No. Name Sampling date Vein or deposit Mining place Mining company Sampling place Grade or sort
110 KRT__01A November 13, 1982 Tomioka D. Shiroiwasaki Kiyama Tohseki Shiroiwasaki Good quality, SK14-18
111 KRT__02A November 13, 1982 Tomioka D. Shiroiwasaki Kiyama Tohseki Shiroiwasaki Good quality, SK14-18
112 KRT__03A November 13, 1982 Tomioka D. Shiroiwasaki Kiyama Tohseki Shiroiwasaki Best quality, Low Fe
113 KRT__06A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Cliff lower-beside road Fe(+)
114 KRT__07A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Cliff beside road/right Soft rock
115 KRT__08A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Cliff beside road/left Soft rock
116 KRT__09A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Cliff near the stock yard of octopus trap Soft rock
117 KRT__10A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Cliff near the stock yard of octopus trap/lower Soft rock
118 KRT__11A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Cliff near the stock yard of octopus trap/lower/right Hard rock
119 KRT__12A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Lower-beside Marine Product Research Institute of Kyushu University ?
120 KRT__13A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Shioiri, cliff/right ?
121 KRT__14A November 13, 1982 Tomioka D. Tomioka Kiyama Tohseki Shioiri, cliff/left ?

No.	Name	Sampling date	Vein or deposit	Mining place	Mining company	Sampling place	Grade or sort
110	KRT__01A	November 13, 1982	Tomioka D.	Shiroiwasaki	Kiyama Tohseki	Shiroiwasaki	Good quality, SK14-18
111	KRT__02A	November 13, 1982	Tomioka D.	Shiroiwasaki	Kiyama Tohseki	Shiroiwasaki	Good quality, SK14-18
112	KRT__03A	November 13, 1982	Tomioka D.	Shiroiwasaki	Kiyama Tohseki	Shiroiwasaki	Best quality, Low Fe
113	KRT__06A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Cliff lower-beside road	Fe(+)
114	KRT__07A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Cliff beside road/right	Soft rock
115	KRT__08A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Cliff beside road/left	Soft rock
116	KRT__09A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Cliff near the stock yard of octopus trap	Soft rock
117	KRT__10A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Cliff near the stock yard of octopus trap/lower	Soft rock
118	KRT__11A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Cliff near the stock yard of octopus trap/lower/right	Hard rock
119	KRT__12A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Lower-beside Marine Product Research Institute of Kyushu University	?
120	KRT__13A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Shioiri, cliff/right	?
121	KRT__14A	November 13, 1982	Tomioka D.	Tomioka	Kiyama Tohseki	Shioiri, cliff/left	?

Colors of the milled samples
No. Name X Y Z Whiteness
(Hunter) L a b Whiteness
(Lab)
110 KRT__01A 79.41 79.39 84.90 71.95 89.10 3.16 5.88 87.22
111 KRT__02A 79.98 80.31 86.64 73.42 89.62 2.48 5.41 88.03
112 KRT__03A 81.15 81.49 88.93 75.36 90.27 2.49 4.78 88.88
113 KRT__06A 71.28 70.89 59.65 50.55 84.20 3.77 16.93 76.53
114 KRT__07A 68.84 68.83 59.97 50.82 82.96 2.93 15.22 76.97
115 KRT__08A 70.80 70.36 58.27 49.38 83.88 3.87 17.53 75.87
116 KRT__09A 78.54 79.13 82.13 69.60 88.96 1.93 7.53 86.50
117 KRT__10A 74.64 75.18 73.91 62.64 86.71 1.92 10.15 83.16
118 KRT__11A 77.21 78.46 81.41 68.99 88.58 0.58 7.51 86.32
119 KRT__12A 73.95 75.21 69.40 58.81 86.72 0.44 13.26 81.23
120 KRT__13A 76.05 76.50 76.81 65.09 87.46 2.14 9.16 84.33
121 KRT__14A 78.36 79.72 80.66 68.36 89.29 0.41 8.94 86.04

Colors of the milled samples
No.	Name	X	Y	Z	Whiteness (Hunter)	L	a	b	Whiteness (Lab)
110	KRT__01A	79.41	79.39	84.90	71.95	89.10	3.16	5.88	87.22
111	KRT__02A	79.98	80.31	86.64	73.42	89.62	2.48	5.41	88.03
112	KRT__03A	81.15	81.49	88.93	75.36	90.27	2.49	4.78	88.88
113	KRT__06A	71.28	70.89	59.65	50.55	84.20	3.77	16.93	76.53
114	KRT__07A	68.84	68.83	59.97	50.82	82.96	2.93	15.22	76.97
115	KRT__08A	70.80	70.36	58.27	49.38	83.88	3.87	17.53	75.87
116	KRT__09A	78.54	79.13	82.13	69.60	88.96	1.93	7.53	86.50
117	KRT__10A	74.64	75.18	73.91	62.64	86.71	1.92	10.15	83.16
118	KRT__11A	77.21	78.46	81.41	68.99	88.58	0.58	7.51	86.32
119	KRT__12A	73.95	75.21	69.40	58.81	86.72	0.44	13.26	81.23
120	KRT__13A	76.05	76.50	76.81	65.09	87.46	2.14	9.16	84.33
121	KRT__14A	78.36	79.72	80.66	68.36	89.29	0.41	8.94	86.04

Chemical compositions (wt%)
No. Name SiO₂ Al₂O₃ Fe₂O₃ TiO₂ CaO MgO Na₂O K₂O Ig.loss
110 KRT__01A 74.85 14.83 0.52 0.04 0.19 0.24 3.76 4.48 1.00
111 KRT__02A 74.64 15.17 0.52 0.04 0.13 0.32 3.93 4.11 1.08
112 KRT__03A 75.01 15.03 0.43 0.05 0.12 0.35 3.47 4.32 1.14
113 KRT__06A 74.33 15.06 1.15 0.14 0.20 0.44 3.95 3.19 1.33
114 KRT__07A 71.50 16.81 1.47 0.12 0.07 0.63 0.71 3.59 4.06
115 KRT__08A 73.74 15.58 1.25 0.10 0.09 0.43 2.35 3.56 2.43
116 KRT__09A 73.67 15.41 0.60 0.05 0.32 0.30 3.02 4.53 1.72
117 KRT__10A 72.37 16.06 0.88 0.05 0.30 0.34 2.01 4.65 2.66
118 KRT__11A 74.56 14.71 0.52 0.05 0.27 0.25 4.85 3.49 1.07
119 KRT__12A 74.80 14.71 1.26 0.07 0.19 0.37 3.43 3.56 1.33
120 KRT__13A 74.33 14.99 1.11 0.04 0.10 0.26 3.16 4.35 1.46
121 KRT__14A 74.29 15.44 0.97 0.04 0.09 0.31 2.99 3.78 1.85

Chemical compositions (wt%)
No.	Name	SiO₂	Al₂O₃	Fe₂O₃	TiO₂	CaO	MgO	Na₂O	K₂O	Ig.loss
110	KRT__01A	74.85	14.83	0.52	0.04	0.19	0.24	3.76	4.48	1.00
111	KRT__02A	74.64	15.17	0.52	0.04	0.13	0.32	3.93	4.11	1.08
112	KRT__03A	75.01	15.03	0.43	0.05	0.12	0.35	3.47	4.32	1.14
113	KRT__06A	74.33	15.06	1.15	0.14	0.20	0.44	3.95	3.19	1.33
114	KRT__07A	71.50	16.81	1.47	0.12	0.07	0.63	0.71	3.59	4.06
115	KRT__08A	73.74	15.58	1.25	0.10	0.09	0.43	2.35	3.56	2.43
116	KRT__09A	73.67	15.41	0.60	0.05	0.32	0.30	3.02	4.53	1.72
117	KRT__10A	72.37	16.06	0.88	0.05	0.30	0.34	2.01	4.65	2.66
118	KRT__11A	74.56	14.71	0.52	0.05	0.27	0.25	4.85	3.49	1.07
119	KRT__12A	74.80	14.71	1.26	0.07	0.19	0.37	3.43	3.56	1.33
120	KRT__13A	74.33	14.99	1.11	0.04	0.10	0.26	3.16	4.35	1.46
121	KRT__14A	74.29	15.44	0.97	0.04	0.09	0.31	2.99	3.78	1.85

Mineral compositions (wt%)
No. Name Quartz Sericite Kaolin mineral Feldspar Calcite Siderite
110 KRT__01A 35.57 30.87 0.30 33.22 0.00 0.04
111 KRT__02A 36.71 32.42 0.76 29.60 0.00 0.51
112 KRT__03A 39.27 32.94 0.64 26.93 0.00 0.22
113 KRT__06A 45.02 5.82 0.53 48.32 0.00 0.31
114 KRT__07A 43.69 44.40 7.71 3.88 0.00 0.32
115 KRT__08A 44.03 22.61 5.20 27.92 0.00 0.24
116 KRT__09A 30.63 50.13 2.01 17.00 0.00 0.23
117 KRT__10A 31.66 39.14 3.95 25.11 0.00 0.14
118 KRT__11A 31.35 27.91 1.44 39.30 0.00 0.00
119 KRT__12A 36.85 23.88 0.64 38.02 0.09 0.52
120 KRT__13A 37.53 36.31 0.99 24.98 0.00 0.19
121 KRT__14A 44.52 24.47 2.58 28.01 0.00 0.42

Mineral compositions (wt%)
No.	Name	Quartz	Sericite	Kaolin mineral	Feldspar	Calcite	Siderite
110	KRT__01A	35.57	30.87	0.30	33.22	0.00	0.04
111	KRT__02A	36.71	32.42	0.76	29.60	0.00	0.51
112	KRT__03A	39.27	32.94	0.64	26.93	0.00	0.22
113	KRT__06A	45.02	5.82	0.53	48.32	0.00	0.31
114	KRT__07A	43.69	44.40	7.71	3.88	0.00	0.32
115	KRT__08A	44.03	22.61	5.20	27.92	0.00	0.24
116	KRT__09A	30.63	50.13	2.01	17.00	0.00	0.23
117	KRT__10A	31.66	39.14	3.95	25.11	0.00	0.14
118	KRT__11A	31.35	27.91	1.44	39.30	0.00	0.00
119	KRT__12A	36.85	23.88	0.64	38.02	0.09	0.52
120	KRT__13A	37.53	36.31	0.99	24.98	0.00	0.19
121	KRT__14A	44.52	24.47	2.58	28.01	0.00	0.42

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.
L_T : Total weight loss, L₄₀₀ : Weight loss of 400-1,000°C.
No. Name L_T
(wt%) L₄₀₀
(wt%) X Y Z Whiteness
(Hunter) L a b Whiteness
(Lab)
110 KRT__01A 1.20 0.89 74.41 73.67 72.07 61.08 85.83 4.54 10.30 81.90
111 KRT__02A 1.23 1.03 74.35 73.82 71.61 60.69 85.92 4.11 10.73 81.83
112 KRT__03A 1.35 1.05 77.14 76.94 77.42 65.61 87.72 3.48 9.07 84.34
113 KRT__06A 1.72 1.18 54.39 49.77 33.01 27.97 70.55 14.16 21.64 60.81
114 KRT__07A 5.43 3.67 63.13 60.36 46.61 39.50 77.69 9.08 18.81 69.44
115 KRT__08A 3.14 2.20 59.93 55.52 40.28 34.14 74.51 13.17 20.11 64.96
116 KRT__09A 2.30 1.58 73.65 73.26 71.00 60.17 85.59 3.81 10.73 81.63
117 KRT__10A 3.61 2.39 68.52 67.40 61.28 51.93 82.10 5.31 13.21 77.13
118 KRT__11A 1.53 0.94 71.57 70.83 64.97 55.06 84.16 4.52 13.14 78.93
119 KRT__12A 1.85 1.19 55.95 51.49 34.64 29.36 71.76 13.61 21.61 61.92
120 KRT__13A 1.81 1.34 65.68 63.77 53.91 45.69 79.86 7.06 15.87 73.40
121 KRT__14A 2.25 1.74 70.82 69.45 60.30 51.10 83.34 5.85 15.44 76.54

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. L_T : Total weight loss, L₄₀₀ : Weight loss of 400-1,000°C.
No.	Name	L_T (wt%)	L₄₀₀ (wt%)	X	Y	Z	Whiteness (Hunter)	L	a	b	Whiteness (Lab)
110	KRT__01A	1.20	0.89	74.41	73.67	72.07	61.08	85.83	4.54	10.30	81.90
111	KRT__02A	1.23	1.03	74.35	73.82	71.61	60.69	85.92	4.11	10.73	81.83
112	KRT__03A	1.35	1.05	77.14	76.94	77.42	65.61	87.72	3.48	9.07	84.34
113	KRT__06A	1.72	1.18	54.39	49.77	33.01	27.97	70.55	14.16	21.64	60.81
114	KRT__07A	5.43	3.67	63.13	60.36	46.61	39.50	77.69	9.08	18.81	69.44
115	KRT__08A	3.14	2.20	59.93	55.52	40.28	34.14	74.51	13.17	20.11	64.96
116	KRT__09A	2.30	1.58	73.65	73.26	71.00	60.17	85.59	3.81	10.73	81.63
117	KRT__10A	3.61	2.39	68.52	67.40	61.28	51.93	82.10	5.31	13.21	77.13
118	KRT__11A	1.53	0.94	71.57	70.83	64.97	55.06	84.16	4.52	13.14	78.93
119	KRT__12A	1.85	1.19	55.95	51.49	34.64	29.36	71.76	13.61	21.61	61.92
120	KRT__13A	1.81	1.34	65.68	63.77	53.91	45.69	79.86	7.06	15.87	73.40
121	KRT__14A	2.25	1.74	70.82	69.45	60.30	51.10	83.34	5.85	15.44	76.54

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, S_M : Maximum shrinkage, T₀ : Temperature at the maximum shrinkage, T₅ : Temperature at the expansion coefficient becomes 0.0005/°C, T_S5 : Temperature rectified using the correlative equation, T_SK : Nominal temperature equivalent to its SK.
No. Name W₁₀
(wt%) S_M
(%) T₀
(°C) T₅
(°C) T_S5
(°C) T_SK
(°C) SK X Y Z W
(Hunter) L a b W
(Lab)
110 KRT__01A 44.7 9.68 1243 1282 1279 1419 14+ 50.80 51.98 53.68 45.49 72.10 -0.40 6.32 71.39
111 KRT__02A 45.1 9.21 1259 1294 1290 1435 15 57.45 58.90 60.59 51.35 76.75 -0.69 6.91 75.73
112 KRT__03A 45.8 9.36 1251 1289 1285 1427 15- 58.00 59.33 62.65 53.09 77.03 -0.39 5.69 76.33
113 KRT__06A 45.5 8.59 1228 1250 1246 1373 13- 32.85 31.27 22.02 18.66 55.92 7.00 15.80 52.65
114 KRT__07A 47.8 5.49 1368 1378 1372 1529 20 46.99 48.17 48.36 40.98 69.40 -0.61 7.27 68.55
115 KRT__08A 39.5 5.94 1281 1298 1298 1445 15+ 42.88 42.27 35.00 29.66 65.02 3.95 13.59 62.26
116 KRT__09A 46.3 8.75 1261 1280 1275 1415 14+ 52.00 52.73 50.64 42.92 72.62 0.75 9.48 71.01
117 KRT__10A 38.9 7.52 1283 1305 1306 1454 16- 50.06 50.95 48.36 40.98 71.38 0.27 9.80 69.75
118 KRT__11A 43.8 9.44 1246 1271 1268 1405 14- 49.83 50.63 51.02 43.24 71.15 0.48 7.30 70.24
119 KRT__12A 44.2 9.08 1238 1255 1252 1382 13 31.73 29.43 20.64 17.49 54.25 9.47 15.42 50.80
120 KRT__13A 36.6 10.1 1254 1278 1280 1422 14+ 41.06 41.34 37.22 31.54 64.30 1.47 10.69 62.70
121 KRT__14A 44.3 8.93 1269 1286 1283 1425 15- 50.43 51.36 47.90 40.59 71.67 0.19 10.54 69.77
Last updated: August 1997

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, S_M : Maximum shrinkage, T₀ : Temperature at the maximum shrinkage, T₅ : Temperature at the expansion coefficient becomes 0.0005/°C, T_S5 : Temperature rectified using the correlative equation, T_SK : Nominal temperature equivalent to its SK.
No.	Name	W₁₀ (wt%)	S_M (%)	T₀ (°C)	T₅ (°C)	T_S5 (°C)	T_SK (°C)	SK	X	Y	Z	W (Hunter)	L	a	b	W (Lab)
110	KRT__01A	44.7	9.68	1243	1282	1279	1419	14+	50.80	51.98	53.68	45.49	72.10	-0.40	6.32	71.39
111	KRT__02A	45.1	9.21	1259	1294	1290	1435	15	57.45	58.90	60.59	51.35	76.75	-0.69	6.91	75.73
112	KRT__03A	45.8	9.36	1251	1289	1285	1427	15-	58.00	59.33	62.65	53.09	77.03	-0.39	5.69	76.33
113	KRT__06A	45.5	8.59	1228	1250	1246	1373	13-	32.85	31.27	22.02	18.66	55.92	7.00	15.80	52.65
114	KRT__07A	47.8	5.49	1368	1378	1372	1529	20	46.99	48.17	48.36	40.98	69.40	-0.61	7.27	68.55
115	KRT__08A	39.5	5.94	1281	1298	1298	1445	15+	42.88	42.27	35.00	29.66	65.02	3.95	13.59	62.26
116	KRT__09A	46.3	8.75	1261	1280	1275	1415	14+	52.00	52.73	50.64	42.92	72.62	0.75	9.48	71.01
117	KRT__10A	38.9	7.52	1283	1305	1306	1454	16-	50.06	50.95	48.36	40.98	71.38	0.27	9.80	69.75
118	KRT__11A	43.8	9.44	1246	1271	1268	1405	14-	49.83	50.63	51.02	43.24	71.15	0.48	7.30	70.24
119	KRT__12A	44.2	9.08	1238	1255	1252	1382	13	31.73	29.43	20.64	17.49	54.25	9.47	15.42	50.80
120	KRT__13A	36.6	10.1	1254	1278	1280	1422	14+	41.06	41.34	37.22	31.54	64.30	1.47	10.69	62.70
121	KRT__14A	44.3	8.93	1269	1286	1283	1425	15-	50.43	51.36	47.90	40.59	71.67	0.19	10.54	69.77