Terra Cotta C/04 #1

Redart 70
Kentucky OM #4 15
Silica 8
Talc 7
Grog 10

Na2O 0.4% Al2O3 19.3% SiO2 66.7%
K2O 3.1% P2O5 0.1%
MgO 3.2% TiO2 1.1%
CaO 0.8% Fe2O3 5.4%
MnO 0.0%

Volatiles: Other 5.4%
Loss On Ignition: 5.1%

Note : Good plasticity. 11/12

Terra Cotta C/04 #2

Redart 65
Kentucky OM #4 20
Frit 3134 5
Kona F-4 5
Silica 5
Grog 10

Na2O 1.2% Al2O3 20.8% SiO2 65.1%
K2O 3.1% B2O3 1.1% P2O5 0.1%
MgO 1.1% TiO2 1.1%
CaO 1.3% Fe2O3 5.1%

Volatiles: Other 5.4%
Loss On Ignition: 5.1%

Note : Good plasticity.
5% grog could be enough.

Terra Cotta C/04 #3

Redart 50
Kentucky OM #4 25
Talc 15
Kona F-4 5
Silica 5
Grog 10

Na2O 0.7% Al2O3 20.1% SiO2 64.5%
K2O 2.6% P2O5 0.1%
MgO 5.2% TiO2 1.0%
CaO 1.5% Fe2O3 4.2%
MnO 0.0%

Volatiles: Other 6.1%
Loss On Ignition: 5.8%

Note : Excellent plasticity 11/12.

Terra Cotta C/04 #4

Redart 75
Kentucky OM #4 15
Frit 3134 10
Grog 12.5

Na2O 1.4% Al2O3 20.7% SiO2 62.3%
K2O 3.2% B2O3 2.2% P2O5 0.2%
MgO 1.2% TiO2 1.2%
CaO 2.1% Fe2O3 5.7%

Volatiles: Other 5.1%
Loss On Ignition: 4.9%

Note :Very plastic, maybe too much.

Quebec ash clay C/04 #5a

Redart 44.44
Kentucky OM #4 20.29
Bentonite 2.42
Custer feldspar 16.43
Ash Berhens 7.73
Talc 5.8
QIT Red Dust 2.9
Grog 10

Na2O 0.9% Al2O3 20.8% SiO2 59.4%
K2O 3.9% P2O5 0.7%
MgO 2.7% TiO2 0.9%
CaO 4.3% Fe2O3 6.3%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 4.8%
Loss On Ignition: 4.6%

Note : Too plastic.
Too much bentonite.

Terra Cotta C/04 #5b

Redart 45
Kentucky OM #4 17
Kona F-4 24
Bone ash 4
Talc 7
QIT Red Dust 3
Grog 10

Na2O 1.9% Al2O3 20.5% SiO2 59.6%
K2O 3.2% P2O5 1.7%
MgO 2.8% TiO2 0.9%
CaO 3.3% Fe2O3 6.1%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.2%
Other 4.5%
Loss On Ignition: 4.5%

Note : Good plasticity.

Terra Cotta C/04 #6

Redart 63.73
Kentucky OM #4 14.71
Bentonite 0.98
Custer feldspar 9.8
Ash Berhens 9.8
QIT Red Dust 0.98
Grog 10

Na2O 0.7% Al2O3 21.0% SiO2 60.4%
K2O 4.0% P2O5 1.0%
MgO 1.3% TiO2 1.1%
CaO 4.6% Fe2O3 5.9%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 4.7%
Loss On Ignition: 4.5%

Note : Very plastic 11.5/12

Terra Cotta C/04 #7a

Redart 59
Kentucky OM #4 14.74
Bentonite 0.99
Talc 14.78
Barium carbonate 0.49
Grog 10
Na2O 0.5% Al2O3 19.7% SiO2 62.8%
K2O 2.9% P2O5 0.1%
MgO 5.8% TiO2 1.1%
CaO 1.6% Fe2O3 5.2%
MnO 0.0%
BaO 0.4%

Volatiles: CO2 0.1% Other 5.8%
Loss On Ignition: 5.6%

Note : Too plastic.
Remove bentonite.:

Terra Cotta C/04 #7b

Redart 60
Kentucky OM #4 15
Talc 15
Silica 10
Grog 5

Na2O 0.4% Al2O3 16.2% SiO2 67.9%
K2O 2.7% P2O5 0.1%
MgO 5.6% TiO2 0.9%
CaO 1.5% Fe2O3 4.7%
MnO 0.0%

Volatiles: Other 5.6%
Loss On Ignition: 5.3%

Note : Good plasticity 11/12.

Terra Cotta C/ash 04 #8a

Redart 40.19
Kentucky OM #4 14.35
Bentonite 1.91
Custer feldspar 8.61
Silica 22.97
Ash Berhens 9.57
Barium carbonate 0.48
Local Red Ocre 1.91Grog 10

Na2O 0.6% Al2O3 17.3% SiO2 66.6%
K2O 3.0% P2O5 0.9%
MgO 0.9% TiO2 0.8%
CaO 4.4% Fe2O3 5.2%
BaO 0.4%

Volatiles: CO2 0.1%
Other 3.5%
Loss On Ignition: 3.5%

Note : Very plastic 11.5/12

Terra Cotta ash C/04 #8b

Redart 40
Kentucky OM #4 14
Bentonite 2
Custer feldspar 9
Silica 23
Ash Berhens 10
Local Red Ocre 2

Na2O 0.6% Al2O3 13.8% SiO2 69.4%
K2O 3.2% P2O5 1.0%
MgO 1.0% TiO2 0.7%
CaO 5.0% Fe2O3 5.3%

Volatiles: Other 3.8%
Loss On Ignition: 3.7%

Note : Very plastic 11.8/12.
Bentonite could be reduced.

Terra Cotta C/04 #9

Redart 53
Kentucky OM #4 20
Talc 15
Silica 10
Custer feldspar 2
Grog 5

Na2O 0.4% Al2O3 16.9% SiO2 67.7%
K2O 2.7% P2O5 0.1%
MgO 5.5% TiO2 0.9%
CaO 1.5% Fe2O3 4.3%
MnO 0.0%

Volatiles: Other 5.9%
Loss On Ignition: 5.6%

Note : Very plastic 11.8/12.

Terra Cotta C/04 #10

Redart 60
Kentucky OM #4 20
Talc 15
Silica 5
QIT Red Dust 1
Grog 5

Na2O 0.4% Al2O3 17.5% SiO2 65.5%
K2O 2.8% P2O5 0.1%
MgO 5.6% TiO2 1.0%
CaO 1.5% Fe2O3 5.6%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 6.2%
Loss On Ignition: 5.9%

Note : Superb clay.

Terra Cotta C/04 #11

Redart 60
Kentucky OM #4 20
Silica 10
Talc 10
Grog 10

Na2O 0.4% Al2O3 19.2% SiO2 66.8%
K2O 2.7% P2O5 0.1%
MgO 3.9% TiO2 1.1%
CaO 1.0% Fe2O3 4.8%
MnO 0.0%

Volatiles: Other 5.7%
Loss On Ignition: 5.4%

Note : Platic enough, 11.0/12.

Terra Cotta C/04 #12

Redart 50
Kentucky OM #4 25
Talc 15
Silica 5
Custer feldspar 5
Grog 10

Na2O 0.5% Al2O3 20.0% SiO2 64.6%
K2O 2.9% P2O5 0.1%
MgO 5.2% TiO2 1.0%
CaO 1.4% Fe2O3 4.2%
MnO 0.0%

Volatiles: Other 6.1%
Loss On Ignition: 5.8%

Note : Plastic enough

Terra Cotta 04 #13

Redart 50
Kentucky OM #4 20
Talc 15
Silica 5
Custer feldspar 5
Grog 10

Na2O 0.5% Al2O3 19.5% SiO2 64.7%
K2O 2.9% P2O5 0.1%
MgO 5.4% TiO2 1.0%
CaO 1.5% Fe2O3 4.3%
MnO 0.0%

Volatiles: Other 5.8%
Loss On Ignition: 5.5%

Note : Plastic enough 11/12

Terra Cotta C/04 #14

Redart 50
Kentucky OM #4 20
Talc 15
Silica 5
Custer feldspar 10

Na2O 0.6% Al2O3 16.0% SiO2 67.6%
K2O 3.5% P2O5 0.1%
MgO 5.7% TiO2 0.8%
CaO 1.6% Fe2O3 4.0%
MnO 0.0%

Volatiles: Other 6.1%
Loss On Ignition: 5.7%

Note : Very plastic 11.2/12

Terra Cotta C/04 #15

Redart 47
Kentucky OM #4 20
Kona F-4 16
Talc 15
Red iron oxide 2

Na2O 1.5% Al2O3 17.0% SiO2 64.1%
K2O 3.1% P2O5 0.1%
MgO 5.7% TiO2 0.8%
CaO 1.8% Fe2O3 5.9%
MnO 0.0%

Volatiles: Other 6.0%
Loss On Ignition: 5.6%

Note : Plastic enough.

Terra Cotta C/04 #16

Redart 55.56
Kentucky OM #4 19.19
Talc 14.14
Silica 10.1
QIT Red Dust 1.01
Grog 5

Na2O 0.4% Al2O3 16.7% SiO2 67.2%
K2O 2.6% P2O5 0.1%
MgO 5.3% TiO2 0.9%
CaO 1.5% Fe2O3 5.3%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 5.9%
Loss On Ignition: 5.6%

Note : Plastic enough.

Terra Cotta C/04 #17

Redart 55
Kentucky OM #4 15
Talc 15
Silica 10
Custer feldspar 5
QIT Red Dust 1
Grog 5

Na2O 0.5% Al2O3 16.1% SiO2 67.3%
K2O 3.0% P2O5 0.1%
MgO 5.4% TiO2 0.9%
CaO 1.5% Fe2O3 5.1%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 5.3%
Loss On Ignition: 5.1%

Note : Plastic enough.

Terra Cotta C/04 #18

Redart 50
Kentucky OM #4 15
Kona F-4 15
Silica 5
Talc 15
QIT Red Dust 1
Grog 5

Na2O 1.3% Al2O3 17.3% SiO2 65.5%
K2O 3.0% P2O5 0.1%
MgO 5.3% TiO2 0.8%
CaO 1.7% Fe2O3 4.8%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 5.1%
Loss On Ignition: 4.9%

Note : Plastic enough.

Terra Cotta C/04 #19

Redart 48.54
Kentucky OM #4 14.56
Bentonite 1.94
Talc 14.56
Silica 4.85
Kona F-4 14.56
Local Red Ocre 0.97
Grog 10

Na2O 1.4% Al2O3 19.0% SiO2 64.3%
K2O 2.9% P2O5 0.1%
MgO 5.0% TiO2 0.9%
CaO 1.7% Fe2O3 4.8%
MnO 0.0%

Volatiles:
Other 4.7%
Loss On Ignition: 4.5%

Note : Very plastic 11.6/12.

Terra Cotta C/04 #20

Redart 60
Kentucky OM #4 15
Talc 15
Kona F-4 10
QIT Red Dust 1
Grog 5

Na2O 1.0% Al2O3 18.0% SiO2 64.0%
K2O 3.2% P2O5 0.1%
MgO 5.5% TiO2 0.9%
CaO 1.7% Fe2O3 5.5%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 5.6%
Loss On Ignition: 5.3%

Note : Excellent plasticity, 11/12.

Terra Cotta C/04 #21

Redart 50
Kentucky OM #4 15
Talc 15
Kona F-4 10
Silica 10
QIT Red Dust 1
Grog 5

Na2O 1.0% Al2O3 16.4% SiO2 67.2%
K2O 2.7% P2O5 0.1%
MgO 5.3% TiO2 0.8%
CaO 1.7% Fe2O3 4.8%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 5.1%
Loss On Ignition: 4.9%

Note : Plastic enough.

Terra Cotta C/04 #22

Redart 60
Kentucky OM #4 15
Talc 10
Silica 5
Kona F-4 10
QIT Red Dust 1
Grog 5

Na2O 1.0% Al2O3 17.9% SiO2 66.1%
K2O 3.2% P2O5 0.1%
MgO 4.0% TiO2 0.9%
CaO 1.3% Fe2O3 5.5%
MnO 0.0%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 5.3%
Loss On Ignition: 5.0%

Note : Excellent plasticity, 11.5/12.

Terra Cotta C/04 #23

Redart 60
GoldArt 20
Silica 5
Talc 5
Kentucky OM #4 10

Na2O 0.3% Al2O3 19.0% SiO2 68.0%
K2O 3.0% P2O5 0.1%
MgO 2.7% TiO2 1.3%
CaO 0.7% Fe2O3 4.9%
MnO 0.0%

Volatiles: Other 6.7%
Loss On Ignition: 6.3%

Note : Very plastic, 11.8/12

Terra Cotta C/04 #24

Redart 65
Kentucky OM #4 15
Custer feldspar 10
Silica 10
QIT Red Dust 1
Grog 10

Na2O 0.6% Al2O3 19.9% SiO2 67.4%
K2O 3.8% P2O5 0.1%
MgO 1.1% TiO2 1.0%
CaO 0.3% Fe2O3 5.7%
ZnO 0.0%

Volatiles: CO2 0.0%
Other 4.7%
Loss On Ignition: 4.5%

Note : Excellent plasticity, 11/12

Terra Cotta C/04 #25

Redart 60
Kentucky OM #4 15
Talc 15
Silica 5
Custer feldspar 5
Grog 5

Na2O 0.5% Al2O3 17.1% SiO2 66.4%
K2O 3.2% P2O5 0.1%
MgO 5.6% TiO2 0.9%
CaO 1.5% Fe2O3 4.7%
MnO 0.0%

Volatiles: Other 5.6%
Loss On Ignition: 5.3%

Note : Plastic enough.

Terra Cotta C/04 #26

Bell Dark ball clay 23
Kentucky OM #4 23
Talc 17
Silica 15
Custer feldspar 17
QIT Red Dust 5

Na2O 0.7% Al2O3 16.6% SiO2 66.9%
K2O 2.2% TiO2 0.7%
MgO 5.6% Fe2O3 5.1%
CaO 2.0%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 6.6%
Loss On Ignition: 6.3%

Note : Very plastic, 11.5/12

Terra Cotta C/04 #27

Bell Dark ball clay 23
Kentucky OM #4 23
Custer feldspar 17
Talc 17
Silica 16
QIT Red Dust 4

Na2O 0.7% Al2O3 16.6% SiO2 67.9%
K2O 2.2% TiO2 0.7%
MgO 5.6% Fe2O3 4.2%
CaO 1.9%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 6.6%
Loss On Ignition: 6.3%

Note : Very good plasticity, 11.2/12

Terra Cotta C/04 #28

Alberta slip 10
Kentucky OM #4 29
EPK 29
Kona F-4 14
Talc 14
QIT Red Dust 4
Grog 5

Na2O 1.4% Al2O3 26.8% SiO2 57.2%
K2O 1.5% P2O5 0.1%
MgO 4.9% TiO2 0.6%
CaO 2.5% Fe2O3 4.9%
MnO 0.0%
ZnO 0.1%
BaO 0.0%

Volatiles: CO2 0.1%
Other 8.8%
Loss On Ignition: 8.2%

Note : Plastic enough.

Terra Cotta C/04 #29

Alberta slip 10
Kentucky OM #4 29
EPK 29
Kona F-4 14
Silica 14
QIT Red Dust 4
Grog 5

Na2O 1.3% Al2O3 26.5% SiO2 63.2%
K2O 1.5% P2O5 0.1%
MgO 0.6% TiO2 0.6%
CaO 1.2% Fe2O3 4.8%
ZnO 0.1%
BaO 0.0%

Volatiles: CO2 0.1%
Other 8.0%
Loss On Ignition: 7.5%

Note : Very plastic, 11.6/12.

Terra Cotta C/04 #30

Bell Dark ball clay 29
Kentucky OM #4 29
Talc 14
Frit 3134 10
Nepheline syenite 5
GoldArt 9
QIT Red Dust 4
Grog 10

Na2O 1.8% Al2O3 24.3% SiO2 57.0%
K2O 0.8% B2O3 2.3% TiO2 1.2%
MgO 4.4% Fe2O3 4.5%
CaO 3.5%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 8.1%
Loss On Ignition: 7.6%

Note : Plastic enough.

Terra Cotta C/04 #31

Bell Dark ball clay 22
Kentucky OM #4 22
EPK 25
Silica 20
Cornish Stone 8
QIT Red Dust 3
Grog 5

Na2O 0.4% Al2O3 26.3% SiO2 67.2%
K2O 0.8% P2O5 0.1%
MgO 0.2% TiO2 0.9%
CaO 0.5% Fe2O3 3.6%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 8.9%
Loss On Ignition: 8.2%

Note : Very plastic, 11.5/12.
Superb clay.

Terra Cotta C/04 #32

Alberta slip 10
Kentucky OM #4 29
Redart 18
GoldArt 10
Kona F-4 10
Silica 10
QIT Red Dust 3
Grog 10

Na2O 1.2% Al2O3 23.5% SiO2 64.3%
K2O 2.2% P2O5 0.0%
MgO 0.9% TiO2 1.0%
CaO 1.2% Fe2O3 5.6%
ZnO 0.1%
BaO 0.0%

Volatiles: CO2 0.1%
Other 5.8%
Loss On Ignition: 5.5%

Note : Very plastic, 11.5/12.

Terra Cotta C/04 #33

Bell Dark ball clay 21.9
Kentucky OM #4 21.9
EPK 21.9
Cornish Stone 21.9
Silica 7.62
QIT Red Dust 4.76
Grog 5

Na2O 0.9% Al2O3 27.2% SiO2 63.2%
K2O 1.4% P2O5 0.1%
MgO 0.2% TiO2 0.9%
CaO 0.8% Fe2O3 5.1%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 8.4%
Loss On Ignition: 7.8%

Note : Very plastic, 11.5/12

Terra Cotta C/04 #34

Kentucky OM #4 36.19
EPK 26.57
Cornish Stone 11.43
Silica 9.52
Kona F-4 8.57
QIT Red Dust 4.76
Grog 5

Na2O 1.2% Al2O3 28.0% SiO2 62.1%
K2O 1.5% P2O5 0.1%
MgO 0.3% TiO2 0.7%
CaO 0.8% Fe2O3 5.3%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 8.9%
Loss On Ignition: 8.2%

Note : Very plastic, 11,7/12.

Terra Cotta C/04 #35

EPK 37.5
Kentucky OM #4 30.77
Frit 3134 9.62
Silica 9.62
Talc 6.73
Bentonite 0.96
QIT Red Dust 4.81

Na2O 1.3% Al2O3 25.4% SiO2 58.6%
K2O 0.5% B2O3 2.5% P2O5 0.1%
MgO 2.5% TiO2 0.6%
CaO 3.3% Fe2O3 5.3%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 10.5%
Loss On Ignition: 9.6%

Note : Very plastic, 11.5/12.
Superb clay.

Terra Cotta C/04 #36

Bell Dark ball clay 22
Kentucky OM #4 20
EPK 30
Silica 19
G-200 feldspar 5
QIT Red Dust 4

Na2O 0.3% Al2O3 26.1% SiO2 66.5%
K2O 1.0% P2O5 0.1%
MgO 0.2% TiO2 0.8%
CaO 0.4% Fe2O3 4.5%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 9.9%
Loss On Ignition: 9.1%

Note : Very plastic, 11.5/12

Terra Cotta 04 #37

Kentucky OM #4 34
Silica 20
Talc 32
Custer feldspar 9
QIT Red Dust 5
Bentonite 3
Grog 5

Na2O 0.6% Al2O3 14.0% SiO2 65.6%
K2O 1.3% TiO2 0.5%
MgO 9.7% Fe2O3 5.0%
CaO 3.2%
MnO 0.1%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 5.9%
Loss On Ignition: 5.7%

Note : Very plastic, 11.5/12.

Terra Cotta 04 #38

Kentucky OM #4 30
Bell Dark ball clay 22
Silica 3
Talc 35
Bone ash 5
QIT Red Dust 5

Na2O 0.3% Al2O3 15.7% SiO2 56.8%
K2O 0.4% P2O5 2.3%
MgO 11.7% TiO2 0.8%
CaO 6.6% Fe2O3 5.3%
MnO 0.1
ZnO 0.1%

Volatiles: CO2 0.3%
Other 8.7%
Loss On Ignition: 8.2%

Note : Plastic enough.

Terra Cotta C/04 #39

Redart 18
Kentucky OM #4 17
Silica 21
Wollastonite 20
Kona F-4 20
QIT Red Dust 4
Bentonite 3

Na2O 1.6% Al2O3 12.0% SiO2 68.0%
K2O 1.9% P2O5 0.0%
MgO 0.5% TiO2 0.4%
CaO 10.4% Fe2O3 5.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 3.0%
Loss On Ignition: 3.0%

Note : Too plastic, diificult to thin.
Bentonite should be reduced dramatically.
Maybe 3 to 1%.

Terra Cotta C/04 #40

Bell Dark ball clay 18
Kentucky OM #4 18
Silica 25
Talc 6
Kona F-4 28
QIT Red Dust 5
Bentonite 2

Na2O 2.1% Al2O3 16.2% SiO2 71.0%
K2O 1.6% TiO2 0.6%
MgO 2.1% Fe2O3 4.9%
CaO 1.4%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 4.7%
Loss On Ignition: 4.5%

Note : Too plastic. Bentonite should be reduced to 1% in a first step.

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

Terra Cotta C/04 #42

Kentucky OM #4 31
Silica 29
Talc 4
Kona F-4 16
Custer feldspar 13
QIT Red Dust 7
Bentonite 3

Na2O 1.7% Al2O3 14.8% SiO2 71.2%
K2O 2.5% TiO2 0.4%
MgO 1.5% Fe2O3 6.5%
CaO 1.2%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 4.2%
Loss On Ignition: 4.2%

Note : Plastic enough.

Terra Cotta C/04 #43

Bell Dark ball clay 15
Kentucky OM #4 15
EPK 10
Custer feldspar 29
Silica 24
Talc 2
QIT Red Dust 5
Bentonite 2
Grog 5

Na2O 1.0% Al2O3 19.6% SiO2 69.1%
K2O 3.2% P2O5 0.0%
MgO 0.8% TiO2 0.6%
CaO 0.7% Fe2O3 4.9%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 4.9%
Loss On Ignition: 4.7%

Note : Plastic enough.

Terra Cotta C/04 #44

Bell Dark ball clay 12
Kentucky OM #4 12
Silica 24
Talc 20
Kona F-4 26
QIT Red Dust 6
Bentonite 3

Na2O 2.0% Al2O3 12.4% SiO2 69.1%
K2O 1.4% TiO2 0.4%
MgO 6.3% Fe2O3 5.6%
CaO 2.6%
MnO 0.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 3.9%
Loss On Ignition: 3.9%

Note : Too plastic.
Bentonite should be reduced according to taste.

Terra Cotta C/04 #45

EPK 10
Kentucky OM #4 20
Bell Dark ball clay 20
Wollastonite 20
Silica 14
Kona F-4 10
QIT Red Dust 6

Na2O 0.8% Al2O3 17.8% SiO2 62.7%
K2O 0.8% P2O5 0.0%
MgO 0.2% TiO2 0.7%
CaO 10.9% Fe2O3 6.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 6.4%
Loss On Ignition: 6.2%

Note : Superb clay.

Terra Cotta C/04 #46

EPK 10
Kentucky OM #4 20
Bell Dark ball clay 20
Silica 10
Kona F-4 10
Wollastonite 25
QIT Red Dust 5

Na2O 0.8% Al2O3 17.8% SiO2 61.1%
K2O 0.8% P2O5 0.0%
MgO 0.2% TiO2 0.7%
CaO 13.4% Fe2O3 5.1%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 6.4%
Loss On Ignition: 6.1%

Note : Perfect plasticity

Terra Cotta C/04 #47

Redart 58
Kentucky OM #4 15
Silica 19
Kona F-4 8
Grog 5

Na2O 0.9% Al2O3 17.2% SiO2 72.1%
K2O 3.0% P2O5 0.1%
MgO 1.0% TiO2 0.9%
CaO 0.3% Fe2O3 4.5%

Volatiles: Other 4.7%
Loss On Ignition: 4.5%

Note : Perfect plasticity.

Terra Cotta C/04 #48

Redart 18
Kentucky OM #4 24
Silica 29
Kona F-4 13
Custer feldspar 11
QIT Red Dust 5
Bentonite 2

Na2O 1.5% Al2O3 14.6% SiO2 73.3%
K2O 2.8% P2O5 0.0%
MgO 0.5% TiO2 0.5%
CaO 0.7% Fe2O3 6.0%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 4.0%
Loss On Ignition: 3.9%

Note : Perfect plasticity.

Terra Cotta C/04 #49

Kentucky OM #4 30
EPK 10
Custer feldspar 28
Silica 25
QIT Red Dust 7
Bentonite 2

Na2O 1.0% Al2O3 18.0% SiO2 69.5%
K2O 3.3% P2O5 0.0%
MgO 0.3% TiO2 0.4%
CaO 0.7% Fe2O3 6.7%
ZnO 0.1%

Volatiles: CO2 0.1%
Other 5.4%
Loss On Ignition: 5.2%

Note : Perfect plasticity.