Coleman Apple Green
Cone: 9 – 10
Color: transparent green
Surface: glossy
Firing: reduction
Recipe: (percent)
Whiting …………… 17.95
Custer Feldspar …. 43.59
EPK …………………. 10.26
Flint …………………. 28.20
Totals: 100 %
Also add:
Chrome Oxide ……… 0.25
Red Iron Oxide ……… 0.77
Possible Health Hazards:
Flint: free silica-wear a NIOSH approved dust mask when handling dry material
Chrome Oxide: all chromium compounds should be viewed as potentially carcinogenic
Estimated Thermal Expansion = 7.29×10-6 /deg. C
Unity Formula for Coleman Apple Green:
0.188 K2O 0.443 Al2O3 4.185 SiO2
0.085 Na2O 0.003 Fe2O3 0.002 TiO2
0.726 CaO 0.001 P2O5 9.4:1 Si:Al Ratio
0.002 MgO
Percentage Analysis for Coleman Apple Green: (by weight)
69.61 % SiO2
12.51 % Al2O3
4.90 % K2O
1.46 % Na2O
11.28 % CaO
0.02 % MgO
0.13 % Fe2O3
0.04 % P2O5
0.04 % TiO2