Copper  Copper  Copper  Copper  Copper 
  Red 1 Red 2 Red 3 Red 4 Red 5
Nepheline Syenite 65       35
Custer Feldspar   50 35 55  
Cornwall Stone     35    
Whiting   20 15   10
Wollastonite 20        
Gerstley Borate 10 10     10
Barium Carbonate       25  
OM-4 ball clay 5        
EPK   5 15 10 15
Silica   15   10 30
  Copper  Copper  Andreson Andreson Andreson
  Red 6 Red 7 Flambe Chun Red #1 Copper Red
Nepheline Syenite 35 45      
Custer Feldspar     36.69 37.4 42.39
Whiting   15 2.29 12.7 2.65
Gerstley Borate     7.64   8.83
Zinc Oxide     1   1.77  
Barium Carbonate 25   3.82 9.9 4.41  
Dolomite 15   7.64 6.2 8.83  
EPK 10 5 12.74 15.5 1.47  
Silica 10 20 22.93   26.5  
Petalite 5          
Borax frit   15        
Tin Oxide     2.29 1 2.65  
Copper Carbonate     0.38 1 0.5  
Red Iron Oxide     1.27 0.5    
Titanium Dioxide       1.3    
Old Coleman  Copper Red Copper Red Copper Red Copper Red Copper Red  
Contributions 1 2 3 5 6  
Nepheline Syenite 17.17   25 16.14    
Kingman Feldspar 17.17 51.8 25 15 45.33  
Whiting 15.45 8.75 2.5   9.93  
Gerstley Borate   6.5 17.5 14.1 4.8  
Zinc Oxide   2.2   8.27 0.67  
Barium Carbonate     10 6.7 4.57  
Dolomite   2.3     3.33  
EPK         3.3  
Silica 34.33 25.55 25 29.36 25.8  
Soda Ash 12.88          
Talc       6.43    
Bentonite 0.86          
Tin Oxide 1.72 1 1 1.5 1.93  
Copper Carbonate 0.43 1 1 2 0.33  
Red Iron Oxide   0.9 0.5   0.16
Copper Reds 2