石川ライト1号
10mmPass
0.40~0.75
石川ライト2号
4.0mmPass
0.45~0.75
石川ライトF2号
2.8mmPass
0.55~0.85
石川ライト3号
1.7mmPass
0.65~0.95
石川ライト4号
1.0mmPass
0.75~1.00
石川ライト4S号
1.0mmPass
0.75~1.10
石川ライト5号
0.5mmPass
0.8~1.05
石川ライト6号
0.355mmPass
0.85~1.10
■Rock type:Sedimentary rock(mainly tuff)
Microphotograph of ISHIKAWALITE(30)
Microphotograph of ISHIKAWALITE(180)
■Main composition
Components (Chemical symbols) |
Analytical Value(%) |
Silicic anhydride(SiO2) | 74.00 |
Alumina(Al2O3) | 12.60 |
Iron oxide(Fe2O3) | 0.99 |
Calcium oxide(CaO) | 0.83 |
Magnesium oxide(MgO) | 0.16 |
Potassium oxidize(K2O) | 4.50 |
Sodium oxide(Na2O) | 3.30 |
Titanium oxide(TiO2) | 0.062 |
Ignition loss(Ig.loss) | 3.40 |
29.20%(JIS:R:A5208)
77.6%(ISHIKAWALITE No.1)(JIS:R:2614)
4.5~7.0
60℃ Be sulfuric acid, Be sulfuric acid+concentrated nitric acid 2.3%...unchanged
30℃ Be sulfuric acid, Be sulfuric acid+concentrated nitric acid 2.3%...unchanged
ISHIKAWALITE is a natural glass (SiO2), and is extremely stable scientifically.
SK 3a(C1.140℃)JIS-R2204
180.5℃ 0.280Kcal/mh℃
302.5℃ 0.348Kcal/mh℃
Left the product for 24 hours at -20℃...Unchanged (JIS-A5208)
2.5×10-2m/s
※As ISHIKAWALITE is a natural material, all of the products may not conform to the above data.