technical specification :
1. SiO2 - 59.10
2. AL203 - 26.05
3. FE203 - 1.49
4. TiO2 - 1.87
5. Ca2O - .72
6. MgO - 1.72
7. K20 + Na20 - 1.05
8. Loss On Ignition – 8.00