Terra Cotta C/04 #43

Bell Dark ball clay 15
Kentucky OM #4 15
EPK 10
Custer feldspar 29
Silica 24
Talc 2
QIT Red Dust 5
Bentonite 2
Grog 5

Na2O 1.0% Al2O3 19.6% SiO2 69.1%
K2O 3.2% P2O5 0.0%
MgO 0.8% TiO2 0.6%
CaO 0.7% Fe2O3 4.9%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 4.9%
Loss On Ignition: 4.7%

Note : Plastic enough.