Henshoku (Discoloration) pottery stone, 35 samples

Colors of the milled samples
Chemical compositions
Mineral compositions
Results of TGA & Colors of the powder samples after measuring
Results of TMA & Colors of the sintered samples after measuring

No.NameSampling dateVein or depositMining placeMining companySampling placeGrade or sort
005USGH_05AMarch 29, 1980Sarayama V.GohtsuUeda TohsekiNorthHensyoku/ Tamamono (discoloration), Siderite(+)
009USGH_09AJuly 16, 1980Sarayama V.GohtsuUeda TohsekiLower levelHensyoku/ Tamamono (discoloration) ?
013USGH_14ANovember 13, 1982Sarayama V.GohtsuUeda TohsekiLower level/rightTamamono/ Henshoku (discoloration), hard
014USGH_15ANovember 13, 1982Sarayama V.GohtsuUeda TohsekiLower level/rightTamamono/ Henshoku (discoloration), soft
023USDH_04SMarch 29, 1980Sarayama V.DenbeekobaUeda Tohseki?Henshoku (discoloration)
034USDH_15AJune 11, 1981Sarayama V.DenbeekobaUeda TohsekiSecond level/left-upperHigh SK, Henshoku (discoloration)
037USDH_18AJune 11, 1981Sarayama V.DenbeekobaUeda TohsekiMiddle level/upper-leftHenshoku (discoloration), SK26
038USDH_19ANovember 13, 1982Sarayama V.DenbeekobaUeda TohsekiUpper level/centerHenshoku (discoloration), deep color sppoted
039USDH_20ANovember 13, 1982Sarayama V.DenbeekobaUeda TohsekiUpper level/rightHenshoku (discoloration), boundary of Shima (stripes)
048USIH_09AMarch 30, 1982Sarayama V.IguchiyamaUeda TohsekiCliff/right, lower of upper levelLook like Henshoku (discoloration)
049USIH_10AMarch 30, 1982Sarayama V.IguchiyamaUeda TohsekiCliff/right, lower of upper levelHenshoku (discoloration)
051USIH_12ANovember 15, 1983Sarayama V.IguchiyamaUeda TohsekiSecond levelRaw material of Amakusa clay ?, Henshoku (discoloration)
052USIH_13ANovember 15, 1983Sarayama V.IguchiyamaUeda TohsekiSecond levelRaw material of Amakusa clay ?, Henshoku (discoloration)
067USTH_01AMarch 30, 1982Sarayama V.ToboshiUeda TohsekiCenter/leftHenshoku (discoloration)
068UST__02AMarch 30, 1982Sarayama V.ToboshiUeda TohsekiRight of USTH_01ALook like Henshoku (discoloration)
077USSH_01AMarch 30, 1982Sarayama V.TsurugigasakoUeda TohsekiInside driftHigh SK Henshoku (discoloration) with white color
078USSH_02AMarch 30, 1982Sarayama V.TsurugigasakoUeda TohsekiInside driftHigh SK Henshoku (discoloration) with white color
079USSH_03AMarch 30, 1982Sarayama V.TsurugigasakoUeda TohsekiOutside drift=USSH_01A (SK26)
055UKMH_02AJuly 16, 1980Kaigan V.MichitanosakoUeda TohsekiStackHenshoku (discoloration)
092KKSHP03AJuly 16, 1980Kaigan V.ShimizuotoshiKiyama TohsekiCenterHenshoku (discoloration), FeS(+), Fe2O3=1wt%
093KKSHP04SJuly 16, 1980Kaigan V.ShimizuotoshiKiyama TohsekiInside drift/rightHenshoku (discoloration), FeS(+)
094KKSHP05AJuly 16, 1980Kaigan V.ShimizuotoshiKiyama TohsekiOutside stockHenshoku (discoloration), FeS(+)
095KKSHA06AMarch 26, 1981Kaigan V.ShimizuotoshiKiyama TohsekiShinyama fifth driftHenshoku (discoloration) A, SK20-25
104KKSTH17ANovember 13, 1982Kaigan V.IwaotoshiKiyama TohsekiInside driftLow SK, Henshoku (discoloration), SK17
134KHDHP01ANovember 15, 1983Kaigan V.TanohiraKiyama TohsekiOpen cutFeS(+), Henshoku (discoloration), SK26-27
186MKKH_03ADecember 1, 1980Kaigan V.KawanohataMatsuzaki TohsekiStock yardHenshoku(discoloration)
057UMOH_01AJune 11, 1981Murayama V.Odatoko FuruyashikiUeda TohsekiLower drift, upper working face/centerGood rock, Henshoku (discoloration)
157NMSH_03ANovember 15, 1983Murayama V.ShindenNishizima TohsekiShinden drift, under 30m from Yamanokohira incline shaftHenshoku (discoloration)
159NMNH_01AMarch 26, 1981Murayama V.NihonmatsuNishizima TohsekiNihonmatsu driftGroup of Henshoku (discoloration)
161NMYH_03SMarch 26, 1981Murayama V.YamanokohiraNishizima TohsekiStock yard, from Hashiriochi ?Henshoku (discoloration), SK26
164NMYTH02AMarch 26, 1981Murayama V.YamanokohiraNishizima TohsekiStock yardLow SK, Henshoku (discoloration), SK15-16
165NMYH_04AMarch 26, 1981Murayama V.YamanokohiraNishizima Tohseki?High SK, discoloration surface
166NMYH_05AMarch 26, 1981Murayama V.YamanokohiraNishizima Tohseki?High SK, no discoloration surface
173HFIH_01SMarch 26, 1981Fukami V.FukamiHisatsune TohsekiInside drift/right/forth working faceHenshoku (discoloration)
195SFDH_02AMarch 26, 1981Fukami V.FukamiShin-ei TohsekiStock yardHenshoku (discoloration)

Colors of the milled samples
No.NameXYZWhiteness
(Hunter)
LabWhiteness
(Lab)
005USGH_05A69.3267.8463.5153.8282.376.0911.9477.85
009USGH_09A78.4879.1280.0567.8488.951.838.9185.69
013USGH_14A81.5282.9587.6074.2491.080.396.7388.82
014USGH_15A80.3781.7486.3173.1490.410.466.6988.30
023USDH_04S56.0755.7453.6845.4974.663.409.6372.68
034USDH_15A67.6867.7766.0956.0182.322.6910.0379.50
037USDH_18A77.8378.5179.2767.1888.611.738.9885.39
038USDH_19A77.9378.8179.6867.5388.771.348.9385.60
039USDH_20A71.7972.3067.9657.5985.031.9112.1380.64
048USIH_09A85.0986.1095.0780.5792.791.304.2191.55
049USIH_10A84.7585.5794.9780.4892.501.663.8891.40
051USIH_12A53.4552.5247.2240.0272.474.8312.1069.54
052USIH_13A83.6684.3786.2673.1091.851.848.6288.00
067USTH_01A71.7671.0869.7059.0784.314.3910.0080.88
068UST__02A74.6073.7367.8257.4785.874.8113.2880.02
077USSH_01A73.3373.8173.2162.0485.912.019.6282.83
078USSH_02A76.2476.6280.9868.6387.532.296.4285.79
079USSH_03A75.3075.5079.0466.9886.892.636.8984.96
055UKMH_02A82.5383.1188.5775.0691.162.066.2189.01
092KKSHP03A76.9576.4671.2160.3587.444.0612.9281.53
093KKSHP04S77.9677.8182.5769.9788.213.396.2586.23
094KKSHP05A79.4279.3980.6768.3689.103.188.6985.70
095KKSHA06A82.9583.2490.1276.3791.242.635.3089.43
104KKSTH17A77.6378.1773.3262.1488.412.0012.7282.68
134KHDHP01A78.9479.4978.9266.8889.162.029.9385.16
186MKKH_03A72.3471.3061.8752.4384.445.1515.6677.33
057UMOH_01A86.6887.4797.6682.7693.531.773.5692.40
157NMSH_03A77.6277.9978.9466.9088.312.348.8285.17
159NMNH_01A81.2982.0086.6473.4290.551.776.6688.31
161NMYH_03S76.3976.2875.3463.8587.343.289.9983.54
164NMYTH02A83.5384.2090.1676.4191.761.915.9889.64
165NMYH_04A75.7575.8279.3967.2887.072.906.8985.07
166NMYH_05A80.4980.6078.8466.8189.782.9210.7884.86
173HFIH_01S85.8286.8097.6082.7193.171.383.1192.37
195SFDH_02A79.4379.2177.9666.0789.003.5610.3684.47

Chemical compositions (wt%)
No.NameSiO2Al2O3Fe2O3TiO2CaOMgONa2OK2OIg.loss
005USGH_05A74.8114.780.930.011.180.122.612.123.16
009USGH_09A73.6514.750.700.011.430.063.533.132.57
013USGH_14A76.9715.220.850.010.100.151.002.203.10
014USGH_15A76.5415.660.840.010.100.160.882.333.06
023USDH_04S77.6314.511.190.010.140.100.093.802.13
034USDH_15A78.3114.840.630.010.110.090.083.542.04
037USDH_18A77.6414.900.770.010.150.100.083.362.46
038USDH_19A74.0315.040.780.012.040.120.063.683.77
039USDH_20A77.0015.450.760.010.130.110.093.822.17
048USIH_09A77.8815.190.330.010.430.120.063.132.52
049USIH_10A77.9415.410.340.010.060.150.093.092.58
051USIH_12A75.4015.002.360.010.160.170.103.442.89
052USIH_13A77.0615.750.400.010.060.180.093.472.55
067USTH_01A77.0915.490.850.010.080.110.093.172.86
068UST__02A77.8515.160.690.010.090.110.103.042.56
077USSH_01A78.2314.690.780.010.080.150.093.092.52
078USSH_02A79.2114.120.710.010.080.150.032.942.36
079USSH_03A79.0214.310.740.010.070.130.063.202.17
055UKMH_02A73.1914.440.800.021.630.131.934.243.47
092KKSHP03A79.7314.110.510.020.050.090.133.421.84
093KKSHP04S80.3513.030.790.020.050.130.093.481.95
094KKSHP05A75.7214.690.860.020.880.210.763.133.56
095KKSHA06A77.7414.470.870.020.300.290.083.073.01
104KKSTH17A74.9814.970.780.021.210.140.203.334.18
134KHDHP01A76.7615.780.590.020.020.100.114.322.15
186MKKH_03A77.8214.410.890.020.310.330.073.272.64
057UMOH_01A77.8415.620.280.020.060.070.103.032.85
157NMSH_03A75.4714.510.880.020.070.083.184.171.44
159NMNH_01A73.2414.880.830.022.330.300.302.944.67
161NMYH_03S78.4414.510.800.020.050.130.082.832.95
164NMYTH02A76.3215.710.920.020.190.230.073.163.10
165NMYH_04A77.3614.991.020.020.080.110.292.723.23
166NMYH_05A77.6815.480.500.020.050.090.082.733.17
173HFIH_01S79.0314.870.200.040.050.130.070.484.75
195SFDH_02A78.8015.060.370.040.070.100.060.634.52

Mineral compositions (wt%)
No.NameQuartzSericiteKaolin mineralFeldsparCalciteSiderite
005USGH_05A40.4025.7711.9319.812.090.00
009USGH_09A41.3018.564.8632.782.500.00
013USGH_14A48.4026.7418.545.930.000.39
014USGH_15A49.2127.8217.065.500.000.41
023USDH_04S51.6446.520.760.670.000.41
034USDH_15A57.9433.867.030.770.300.10
037USDH_18A52.8937.318.281.080.000.44
038USDH_19A42.6046.975.660.503.620.65
039USDH_20A50.9943.843.721.000.370.08
048USIH_09A55.0432.2812.160.520.000.00
049USIH_10A60.5224.9213.530.890.000.14
051USIH_12A43.2946.029.540.860.000.29
052USIH_13A56.9030.6111.131.170.000.19
067USTH_01A52.5430.3816.030.670.000.38
068UST__02A56.8933.348.511.110.000.15
077USSH_01A55.6733.259.191.440.000.45
078USSH_02A54.7336.687.141.010.000.44
079USSH_03A55.1136.277.031.330.000.26
055UKMH_02A35.8842.548.179.782.910.72
092KKSHP03A56.8933.348.511.110.000.15
093KKSHP04S62.0634.320.871.950.000.80
094KKSHP05A45.7932.9714.444.711.600.49
095KKSHA06A53.1135.629.191.430.000.65
104KKSTH17A49.6233.5813.750.502.140.41
134KHDHP01A58.3037.310.873.160.000.36
186MKKH_03A48.1845.185.200.780.320.34
057UMOH_01A54.8328.2916.380.500.000.00
157NMSH_03A32.6543.451.4422.020.000.44
159NMNH_01A44.3934.8015.690.554.120.45
161NMYH_03S56.4727.0714.441.250.000.77
164NMYTH02A57.3128.6411.820.830.430.97
165NMYH_04A53.4231.0710.794.430.000.29
166NMYH_05A58.6722.7117.970.500.070.08
173HFIH_01S61.800.0137.690.500.000.00
195SFDH_02A56.4811.4031.540.500.000.08

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.NameLT
(wt%)
L400
(wt%)
XYZWhiteness
(Hunter)
LabWhiteness
(Lab)
005USGH_05A3.622.9862.6660.5257.1048.3977.797.6310.9474.10
009USGH_09A2.912.4466.0465.1165.8155.7780.694.888.1378.49
013USGH_14A3.792.9167.4366.9972.4661.4181.853.824.8080.84
014USGH_15A3.772.8967.1866.7672.0461.0581.713.784.9280.68
023USDH_04S2.791.9152.7751.9251.3045.4972.064.638.2370.50
034USDH_15A2.661.9164.4663.8664.3154.5079.914.148.2277.90
037USDH_18A3.282.2861.3660.9665.1155.1878.083.655.2177.17
038USDH_19A4.483.5960.1459.8162.3752.8677.343.476.3276.22
039USDH_20A2.821.9964.3363.2961.7752.3579.565.129.6576.82
048USIH_09A3.072.4184.5385.8092.6578.5292.630.795.5490.75
049USIH_10A3.122.4883.9785.0491.5177.5592.221.165.7290.27
051USIH_12A3.742.5743.1441.8838.0532.2564.715.7410.4462.76
052USIH_13A3.242.4282.3083.6087.0573.7791.430.667.5688.56
067USTH_01A3.342.7064.6263.8364.9155.0179.894.567.7677.97
068UST__02A3.162.4066.1163.9459.8350.7079.967.6411.6175.61
077USSH_01A3.092.3563.8962.8463.6153.9179.275.147.9177.22
078USSH_02A2.962.1467.2566.8171.5060.5981.743.825.3580.59
079USSH_03A2.702.0265.0164.6069.0358.5080.373.725.3479.32
055UKMH_02A3.753.3561.3661.3764.7454.8678.342.725.8477.40
092KKSHP03A2.091.7267.4864.7761.3652.0080.488.8311.1375.86
093KKSHP04S2.191.8664.6364.2769.1658.6180.173.614.9779.24
094KKSHP05A3.913.4162.1361.2262.5753.0378.244.817.3676.53
095KKSHA06A3.332.8562.5662.0065.2255.2778.744.036.0177.54
104KKSTH17A4.544.0063.3061.4457.7148.9178.386.9811.2274.67
134KHDHP01A2.442.0574.9373.6671.6060.6885.835.6510.6181.41
186MKKH_03A3.132.4658.8956.0348.6141.1974.859.4413.8969.76
057UMOH_01A3.142.8085.7686.5194.7580.3093.011.824.7191.38
157NMSH_03A1.801.3062.6161.4762.4752.9478.405.347.6476.48
159NMNH_01A5.444.5857.8057.8961.8052.3776.092.455.1075.42
161NMYH_03S3.382.8063.8462.3362.9453.3478.956.188.0076.65
164NMYTH02A3.622.9662.8362.0365.9155.8678.764.575.5177.58
165NMYH_04A3.643.0759.6059.0063.6453.9376.814.084.6476.00
166NMYH_05A3.633.0473.5271.1270.2759.5584.338.039.6379.93
173HFIH_01S5.384.6085.2386.1092.3378.2592.791.575.9690.52
195SFDH_02A5.174.3168.4366.7064.8254.9381.676.6410.1178.04

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.NameW10
(wt%)
SM
(%)
T0
(°C)
T5
(°C)
TS5
(°C)
TSK
(°C)
SKXYZW
(Hunter)
LabW
(Lab)
005USGH_05A43.36.88126312691267140314-46.0346.3347.9840.6668.071.605.8567.50
009USGH_09A49.99.02123312451238136112+37.7537.5238.9633.0261.252.815.1760.81
013USGH_14A43.76.38137813851382153820+47.9148.7952.8244.7669.850.204.0669.58
014USGH_15A40.910.0137613821381153720 50.8251.7254.5246.2071.920.285.3971.40
023USDH_04S49.16.45137413801373153020 43.2143.9446.0839.0566.290.355.1965.89
034USDH_15A50.76.55141114181410156326-58.6860.0764.9155.0177.50-0.494.6077.03
037USDH_18A48.65.57138713971391154620+52.1353.3857.5348.7573.06-0.504.4672.69
038USDH_19A53.16.52133013331323147617-51.4852.2854.0345.7972.300.566.3171.59
039USDH_20A49.97.87138213931386154220+53.8355.1459.2950.2574.26-0.554.6473.84
048USIH_09A47.98.98144814581452159527-72.1773.9383.0670.3985.98-0.642.9185.67
049USIH_10A47.46.55143914521447159126+72.3274.0583.1570.4786.05-0.582.9585.73
051USIH_12A42.97.64135013541352150818+31.6332.2332.6327.6556.770.105.6656.40
052USIH_13A45.07.15142614391435158326 71.1472.8080.4968.2185.32-0.493.7984.83
067USTH_01A48.96.38141914251419157026-53.8255.1558.9849.9874.26-0.604.9073.79
068UST__02A39.77.11138913991399155420+58.7360.1563.1053.4777.56-0.556.0576.75
077USSH_01A51.26.56140614111403155726-53.6554.9158.8649.8874.10-0.444.7873.66
078USSH_02A49.87.11140714131406156026-54.3455.6260.0950.9274.58-0.454.4374.19
079USSH_03A49.56.60141314201413156626-53.9855.2359.7650.6474.32-0.404.3573.95
055UKMH_02A50.48.20125812661258139113+45.9546.4449.3841.8568.151.104.7467.78
092KKSHP03A54.99.67142814361425157526 61.4362.1767.0156.7978.851.084.8178.28
093KKSHP04S53.89.25140914131403155726-51.1751.9055.8847.3672.040.714.4471.68
094KKSHP05A45.96.85131213181314146416+47.3547.5849.9342.3168.981.825.3768.46
095KKSHA06A49.47.08138313901383153920+50.2250.8854.6246.2971.330.844.5370.96
104KKSTH17A45.96.47133113361332148517+52.3152.9255.3346.8972.751.055.8372.11
134KHDHP01A47.39.54139214051400155420+63.1064.4969.5458.9380.31-0.284.8779.71
186MKKH_03A52.36.68139113981389154520+50.5751.9154.9146.5372.05-0.805.2571.55
057UMOH_01A49.86.64147114821475161027 75.0576.7687.4774.1387.61-0.422.1487.42
157NMSH_03A49.09.47125612741267140414-36.7736.2639.4633.4460.223.623.3059.92
159NMNH_01A47.64.98131413151309145916 50.1850.7454.4946.1871.231.094.5170.86
161NMYH_03S48.76.86141614221416156826-44.7945.7749.4541.9167.65-0.224.0267.40
164NMYTH02A48.67.83141014161410156326-50.5451.7655.1546.7471.94-0.514.9171.51
165NMYH_04A50.07.14140214061399155320+43.7344.8447.8540.5566.96-0.624.5166.65
166NMYH_05A48.17.05145214651459160027-67.3568.9477.1765.4083.03-0.513.0282.76
173HFIH_01S41.95.14158215911590165229 76.8678.4292.4378.3388.56-0.050.1088.55
195SFDH_02A44.23.99156115731570164829 65.9667.5476.3064.6682.18-0.562.4882.00
Last updated: August 1997