Terra Cotta C/04 #21

Redart 50
Kentucky OM #4 15
Talc 15
Kona F-4 10
Silica 10
QIT Red Dust 1
Grog 5

Na2O 1.0% Al2O3 16.4% SiO2 67.2%
K2O 2.7% P2O5 0.1%
MgO 5.3% TiO2 0.8%
CaO 1.7% Fe2O3 4.8%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 5.1%
Loss On Ignition: 4.9%

Note : Plastic enough.