Moisture: 2.9%
- Loss on ignition: 13.4%
- Sulfur trioxide (SO3): 0.8%
- Carbon (C): 9.0%
- Silicon dioxide (SiO2): 81.2%
- Iron oxide (FeO3): 0.4%
- Aluminum oxide (Al2O3): 0.1%
- Magnesium oxide (MgO): 0.4%
- Calcium oxide (CaO): 0.6%
- Sodium oxide (Na2O): 0.2%
- Potassium oxide (K2O): 3.5%
- Appearance density after compaction: 0.24%