Cone 9 Crystal Red

Barium carbonate 40
Zinc oxide (Calc.) 15
Nepheline syenite 35
Kaolin (Calc.) 5
Silica 5
Total 100

Black nickel oxide 1.5

Na2O 0.12 Al2O3 0.20 SiO2 0.97
K2O 0.04 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.00 Fe2O3 0.00
NiO 0.04
ZnO 0.38
BaO 0.42

Alumina:Silica ratio is 1.00:4.76
Neutral:Acid ratio is 1.00:4.77
Alk:Neut:Acid ratio is 1.00:0.20:0.98

Expansion: 101.2 x 10e-7 per degree C

Cone 9 Gold

Barium carbonate 31
Dolomite 12
Kona F-4 39
EPK 9
Silica 9
Total 100

Red iron oxide 6

Na2O 0.12 Al2O3 0.30 SiO2 1.79
K2O 0.06 P2O5 0.00
MgO 0.18 TiO2 0.00
CaO 0.21 Fe2O3 0.10
BaO 0.43

Alumina:Silica ratio is 1.00:6.03
Neutral:Acid ratio is 1.00:6.39
Alk:Neut:Acid ratio is 1.00:0.30:1.90

Expansion: 91.1 x 10e-7 per degree C

Cone 9 Yellow (Mottled)

Dolomite 30
Whiting 8
Custer feldspar 25
EPK 16
Kaolin (Calc.) 13
Silica 8

Red iron oxide 3

Na2O 0.03 Al2O3 0.33 SiO2 1.43
K2O 0.06 P2O5 0.00
MgO 0.36 TiO2 0.00
CaO 0.55 Fe2O3 0.05

Alumina:Silica ratio is 1.00:4.29
Neutral:Acid ratio is 1.00:4.44
Alk:Neut:Acid ratio is 1.00:0.33:1.48

Expansion: 75.8 x 10e-7 per degree C

Cone 9 Matt White

Dolomite 20
Whiting 6
Custer feldspar 51
EPK 13
Kaolin (Calc.) 10
Total 100

Na2O 0.07 Al2O3 0.48 SiO2 2.11
K2O 0.16 P2O5 0.00
MgO 0.30 TiO2 0.00
CaO 0.48 Fe2O3 0.00

Alumina:Silica ratio is 1.00:4.44
Neutral:Acid ratio is 1.00:4.45
Alk:Neut:Acid ratio is 1.00:0.48:2.12

Expansion: 78.5 x 10e-7 per degree C

Cone 9 Tenmoku

Whiting 17
Zinc oxide (Calc.) 2
Custer feldspar 46
EPK 11
Silica 24

Red iron oxide 10

Na2O 0.08 Al2O3 0.44 SiO2 3.75
K2O 0.19 P2O5 0.00
MgO 0.00 TiO2 0.00
CaO 0.64 Fe2O3 0.24
ZnO 0.09

Alumina:Silica ratio is 1.00:8.51
Neutral:Acid ratio is 1.00:9.05
Alk:Neut:Acid ratio is 1.00:0.44:3.99

Expansion: 79.0 x 10e-7 per degree C

Cone 9 Crimson

Dolomite 20
Whiting 6
Cornwall Stone 51
EPK 13
Kaolin (Calc.) 10
Total 100

Cobalt carbonate 1

Na2O 0.08 Al2O3 0.47 SiO2 2.25
K2O 0.07 P2O5 0.00
MgO 0.31 TiO2 0.01
CaO 0.52 Fe2O3 0.01
CoO 0.02

Alumina:Silica ratio is 1.00:4.82
Neutral:Acid ratio is 1.00:4.84
Alk:Neut:Acid ratio is 1.00:0.47:2.27

Expansion: 70.3 x 10e-7 per degree C

Cone 9 Green

Dolomite 8
Whiting 11
Custer feldspar 26
Kona F-4 21
Ball clay 13
Silica 21

Ultrox 8.7
Tin oxide 4.35
Copper carbonate 6.5

Na2O 0.11 Al2O3 0.36 SiO2 3.15
K2O 0.12 TiO2 0.01
MgO 0.13 Fe2O3 0.00
CaO 0.48 ZrO2 0.14
CuO 0.16 SnO2 0.09

Alumina:Silica ratio is 1.00:8.82
Neutral:Acid ratio is 1.00:9.48
Alk:Neut:Acid ratio is 1.00:0.36:3.38

Expansion: 72.0 x 10e-7 per degree C