XRD, TGA and TMA Charts (No.203)
No. | Name | Sampling date | Vein or deposit | Mining place | Mining company | Sampling place | Grade or sort |
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203 | HTOSA04A | June 11,1981 | Kaigan V. | Ohsako | Harada Tohseki | Center / right | Lowest grade ?, Shima (stripes) & Albite |
Colors of the milled samples | |||||||
---|---|---|---|---|---|---|---|
X | Y | Z | Whiteness (Hunter) | L | a | b | Whiteness (Lab) |
57.05 | 55.00 | 37.60 | 31.86 | 74.16 | 7.53 | 21.85 | 65.33 |
Chemical compositions (wt%) | ||||||||
---|---|---|---|---|---|---|---|---|
SiO2 | Al2O3 | Fe2O3 | TiO2 | CaO | MgO | Na2O | K2O | Ig.loss |
75.85 | 14.53 | 1.46 | 0.05 | 0.06 | 0.10 | 4.07 | 2.30 | 1.32 |
Mineral compositions (wt%) | |||||
---|---|---|---|---|---|
Q : Quartz | M : Sericite | K : Kaolin mineral | F : Feldspar | C : Calcite | S : Siderite |
40.23 | 18.85 | 0.87 | 39.76 | 0.29 | 0.00 |
Results of TGA and Colors of the Powder Samples after Measuring | |||||||||||||||||||||||||||||
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The conditions for TGA were sample weight : about 180mg, heating rate : 20°C/min, ended temperature : 1000°C.
LT : Total weight loss, L400 : Weight loss of 400-1000°C. LT (wt%) | L400 (wt%) | X | Y | Z | Whiteness (Hunter) | L | a | b | Whiteness (Lab)
| 1.83 | 1.14 | 47.87 | 42.26 | 25.71 | 21.79 | 65.01 | 17.68 | 22.06 | 55.02
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Results of TMA and Colors of the Sintered Samples after Measuring | ||||||||||||||||||||||||||||||||||||||||||||
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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, SMax : 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. W10 | (wt%) SMax | (%) T0 | (°C) T5 | (°C) TS5 | (°C) TSK | (°C) SK | X | Y | Z | W | (Hunter) L | a | b | W | (Lab) 53.0 | 8.83 | 1249 | 1259 | 1250 | 1378 | 13 | 33.36 | 30.79 | 21.21 | 17.97 | 55.49 | 10.21 | 16.18 | 51.55
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