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珪 酸 石 灰 の 研 究 (第2報) 微 構 造
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304
(2)
Calcium Silicates, Part 2. Microstructure
By Seiji Kondo and Toshiyoshi Yamauchi
Abstract
Experiments have been made of microstructure and refractive indices of the synthetic
products described in Part 1 with the following results:
(1) The 3CaO.SiO2 samples prepared at 1800 are pure analytically as well as optically.
However they contain minute proportions of 2CaO.SiO2 type crystals.
(2) The 2CaO.SiO2 sample prepared at 1700 consists solely of type. It is likely that
inversion of the silicate takes place more suddenly than .
(3) The 3CaO.2SiO2 samples prepared at temperatures varying from 1450 to 1475 seem
to be composed of 3CaO.2SiO2 (or CaO .SiO2), 2CaO.SiO2 and 2CaO.SiO2, although they
are almost pure 3CaO.2SiO2 analytically .
(4) The CaO.SiO2 sample prepared at 1500 is almost pure CaO.SiO2E CaO.SiO2
crystals are not optically biaxial and positive, but are optically uniaxial and negative, their
refractive indices being D=1.650 and D=1 .610.
(5) The results of the observations of those samples which were prepared at temperatures
lower than the maxima but higher than 900 agree very well with the results of the
synthetic experiments given in Part 1 .
(6) All compound prepared at temperatures under 1500, especially at 1300 to 1400,
are apt to dust.
(2) 305
1
4 , 600
CaO:SiO2,
3CaOSiO2, 2CaOSiO2, 3CaO2SiO2CaOSiO2, 1
X
(E. S. Shepherd & G. A. Rankin, Ztschr. f. anorg. Chem. 1911, G. A. Rankin, J. Amer.
Chem. Soc., 19_??_6; J. B. Ferguson & H. E. Merwin, Amer. J. Sci., 1919; W. C. Hansen, J. Amer.
Ceram. Soc., 1928; , 8)
(1) 3CaOSiO2
1600 Rankin 1500
Hansen 1500
Lameller twin (Polysynthetic twin, )
2V () D=1.715 0.005
(2) 2CaOSiO2
() 4
2CaOSiO2
Lameller twin 2V(+)
D=1.715, D=1.720, D=1.737, D-D=0.023
2CaOSiO2
010, 100 2V
D=1.715, D=?, D=1.735, D-D=0.018 6751420
1000
Lime olivineShannonite
2CaOSiO2
2V0 =1.715
2CaOSiO2
675 010 2V(+) 52
60 D=1.642, D=1.645, D=1.654, D-D=0.0130.015
306
(3) 3CaO2SiO2
2V(+) D=1.641, D=1.645, D=1.650, D-D=
0.009
(4) CaOSiO2
, 2
CaOSiO2
1200 001 Lameller twin
D=1.610, D=1.611, D=1.654, -=0.041
CaOSiO2
1200 100 001
2V(-)=39 D=1.616, D=1.629, D=1.631, -=0.015
Wollastonite
1
2
(,
, 81)
2 (
)
B Hartmann
AB D
1.7
1.68 1.683CaOSiO2, 2CaOSiO2
2CaOSiO2, CaOSiO2, 3CaO2SiO2
3 A.
(1) 3CaOSiO2 (1800)
0.03mm Lameller twin
(2) 307
D=1.716, D=1.719
-=0.003
, 3CaOSiO2 ,
( 36, 1136, 8) 3CaOSiO2
(-0.023)
1800 1800
2CaOSiO2
1800
X
1800 2CaOSiO2
0.1mm
-0.023
D=1.712, D=1.716, D=1.735, -=0.022, F-C=0.023 2V(+)50
2CaOSiO2 X
1800 1900 3CaOSiO22CaOSiO2+CaO
CaO R. Brill (1932) 3CaOSiO2X
2CaOSiO2
2CaOSiO2 3CaOSiO2 2CaOSiO2
2CaOSiO2
0.03mm ,
2CaOSiO2 Lameller twin 3CaOSiO2
1800 3CaOSiO2 2CaOSiO2
3CaOSiO2 2CaOSiO2
3/4
(2) 2CaOSiO2 (1700)
3CaOSiO2
1
258 ( )
0.020.05mm,
0.023
Lameller twin
(1) D=1.715, D=1.722,
308
D=1.737, -=0.022, F-C=0.0232V(+)66
RankinWright
Lameller twin 2CaO
SiO2
(3) 3CaO2SiO2 (1475 )
3CaOSiO22CaOSiO2
D=1.639, D=1.649, D=1.655, F-C=
0.020, -=0.016 2CaOSiO2
(2)
2
285 2CaOSiO2 1.68
2CaOSiO2 3CaO2SiO2
(4) CaOSiO2 (1500)
CaOSiO2
D=1.650, D=1.610, F-C=0.019, -=0.040
0.1mm
B.
(1) 3CaOSiO2
600
700
CaO
800
1.68 2CaOSiO2, 3CaO2SiO2, CaOSiO2
900
, CaO
CaOSiO2 1.68
10001100
1.68
( 2 ) 309
1200
1.68 2CaOSiO
1.68 2CaOSiO2
, 2CaOSiO2 CaO1.68
1300
1.6510001.68
1.681200, 2CaOSiO2 CaO
3 ,
1400
1300
Z (100)
0.017
D=1.638, D=1.649,
D=1.655, D-D=0.017, 2V52, F-
C=0.020 2CaOSiO2 (3)
3
95
1.7 2CaOSiO2
2CaOSiO2 Lameller twin
2CaOSiO2
1.6601.680 , 2CaOSiO2,
1450
2CaOSiO2 1.7 2C
aO SiO2 CaO , , 3CaO
SiO2
1500
2CaOSiO2 2CaOSiO2 CaO 2CaOSiO2
0.02mm 2CaOSiO2
310
3CaOSiO22CaOSiO2
2CaOSiO2, Cristobalite
16001500
16001hr 15007hr, 3CaOSiO2
CaO , 2CaOSiO2 2CaOSiO2
1600
2CaOSiO2 2CaOSiO2 0.05mm
3CaOSiO2 2CaOSiO2, 2CaOSiO2
CaO
1650
2CaOSiO2, 3CaOSiO2CaO, 2CaOSiO2 3CaOSiO2
1700
1800 3CaOSiO2 Lameller twin
2CaOSiO2 CaO
(2) 2CaOSiO2
6001100
3CaOSiO2
1200
1300
, 2CaOSiO2 2CaOSiO2 CaO
CaOSiO2
1400
2CaOSiO22CaOSiO2, 2CaOSiO2 CaO CaOSiO2
14501500
2CaOSiO2 , CaO
1600
2CaOSiO2, CaO
(3) 3CaO2SiO2
600800
3CaOSiO22CaOSiO2
900
1000
( 2 ) 311
1100
, 1.68
1200
1.68
1300
1.68
1400
1.682 1 2CaOSiO2 CaOSiO2
1 ( CaOSiO2) CaO
D=1.638, D=1.649, D=1.655D=1.639, D=1.649, D=1.655
2CaOSiO2 2CaOSiO2 2CaOSiO2
1.64 , , 3CaO2SiO2
1450
1.64 CaOSiO2 2CaO
SiO2, 2CaOSiO2 CaO
1475 3CaO2SiO2
(4) CaOSiO2
6001000
1100
2CaOSiO2 CaOSiO2
1200
CaOSiO2, 2CaOSiO2 CaOSiO2
1300
2CaOSiO2 ( ) , CaOSiO2 CaO
1400
CaOSiO2 2CaOSiO2, CaOSiO2
14501500
CaOSiO2
4
(1) 3CaOSiO2 1800
3CaOSiO2 2CaOSiO2
2CaOSiO2 Brill (1932) 3CaOSiO2 2CaOSiO2
, 1800 2CaOSiO23CaOSiO22CaOSiO2
312
+CaO
(2) 2CaOSiO2 16001700
2CaOSiO2 W. C. HansenLameller twin
, twin 2CaO
SiO 1
13001500 2CaOSiO2
,
(3) 3CaO2SiO2 14501475
2CaOSiO2
, 3CaO2SiO2 (CaOSiO2) 2CaOSiO2
2CaOSiO21000
2CaOSiO2 3CaO2SiO2 (CaOSiO2)
3CaO2SiO2
(4) CaOSiO 15001530
, D=1.650, D=1.610,
-=0.040 CaOSiO2
(5)
1
1 3COSiO2
CaCO3600CO2SiO2 800
, (163) CaOSiO2 900CaO ,
CaOSiO22CaOSiO2 13001400 2CaOSiO2CaO
14502CaOSiO2
15003CaOSiO2 1600 2CaOSiO2 3CaOSiO2
2CaOSiO3 16503CaOSiO2 , 1800 2CaO
SiO2 3CaOSiO2
2 2CaOSiO2
1300 2CaOSiO2CaOSiO2 1400 CaOSiO2
14501500 2CaOSiO2 CaOSiO2 2CaOSiO2
1600 2CaOSiO2
3 3CaO2SiO2
12002CaOSiO2 14002CaOSiO2CaOSiO2 3CaO2SiO2
1450 CaOSiO2, 2CaOSiO2,
( 5 ) 313
3CaO2SiO2
4 CaOSiO2
1200 1300 CaOSiO22CaOSiO2
1400 CaOSiO2
(6)
Dusting150013001400 D=1.638, D=1.649, D=1.655
2CaOSiO2
2CaOSiO2 1500
5
1. 1
2. 3CaOSiO21800 3CaOSiO22CaO
SiO2
3. 2CaOSiO21700C 2CaO
SiO2
4. 3CaO2SiO214501475 3CaO2SiO2 ( CaOSiO2), 2CaO
SiO22CaOSiO2
5. CaOSiO21500 CaOSiO2 CaOSiO2,
D=1.650, D=1.610
6. , 9001
7. 150013001400 2CaOSiO2 Dusting
() (92 )