Monica’s Seafoam
 

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Cone: 9 – 10
Color: greenish, mottled with light spots
Surface: gloss
Firing: oxidation or reduction

Recipe:    (Percent)
Whiting ………………… 4.69
Custer Feldspar …….. 40.22
EPK ……………………… 2.93
Dolomite ………………. 21.44
Silica …………………….17.16
OM-4 Ball Clay………. 6.85
Zinc Oxide …………….  1.72
Tin Oxide ………………. 2.57
Granular Ilmenite ……. 0.86
Copper Carbonate ……..1.56
Totals:    100 %   

Possible Health Hazards:
Silica: free silica-wear a NIOSH approved dust mask when handling dry material

Estimated Thermal Expansion = 8.47×10-6 /deg. C

Unity Formula for Monica’s Seafoam:
0.115 K2O     0.254 Al2O3    2.189 SiO2
0.052 Na2O    0.018 Fe2O3    0.018 TiO2
0.448 CaO     0.000 P2O5     0.045 SnO2
0.292 MgO     8.6:1 Si:Al Ratio
0.056 ZnO
0.037 CuO

Percentage Analysis for Monica’s Seafoam: (by weight)
    57.94 %   SiO2
    11.41 % Al2O3
     4.77 %    K2O
     1.42 %  Na2O
    11.07 %    CaO
     5.19 %    MgO
     2.01 %    ZnO
     1.30 %    CuO
     1.27 % Fe2O3
     0.63 %    TiO2
     2.99 %   SnO2