Terra Cotta C/04 #41

Bell Dark ball clay 28
Kentucky OM #4 28
Silica 30
Kona F-4 13
QIT Red Dust 5
Grog 10

Na2O 1.0% Al2O3 21.4% SiO2 69.8%
K2O 1.0% TiO2 1.0%
MgO 0.2% Fe2O3 4.9%
CaO 0.6%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 6.0%
Loss On Ignition: 5.8%

Note : Very plastic, 11.6/12