chawan
II

Cone 8 oxidation glazes

These are glazes I used in the 1960's, and for the most part were found, adapted or invented by Barbara Irvine for use in electric kilns fired to cone 8. The Talc Base blue and green were two of my favourites, but there are several other good ones here. Please feel welcome to use the recipes, but be sure to test them out first to see if they are suitable for your work.

Talc Base

Feldspar 45
Gerst. Borate 13
Dolomite 7
Talc 15
EPK 5
Flint 20
this base glaze can also be made with Neph. Sy. as the feldspar
Colour additions: (for blues and greens always use a sodium type feldspar)
green: Red iron ox. 1.5, copper ox. 1.5
blue: cobalt ox. 2.5, copper ox. 2.0
yellow: Red iron ox. 2.0, tin ox. 1.0
brown: Red iron ox. 9.0, increase EPK from 5 to 20
grey-brown: cobalt ox. 2.5, Red iron ox. 2.0, nickle ox. 1.5

Stoney Matte

Feldspar 100.8
Dolomite 40.2
Whiting 21.9
Zinc Ox. 17.7
EPK 67.5
Flint 52.2
Colour additions:
yellow: Red iron ox. 6
green: cobalt ox. .8, Red iron ox. 6
blue: cobalt ox. .8, copper ox. 3
mustard: Red iron ox. 15
green-grey: copper ox. 6
yellow-green: copper ox. 3, Red iron ox. 3
beige: cobalt ox. .8, Red iron ox. 5, nickle ox. 5

Satin White

Neph. Sy. 53
Ball clay 20
Flint 10
Dolomite 15
Zinc Ox. 2

S4

Neph. Sy. 74.5
Zinc Ox. 2.2
Dolomite 4.9
Whiting 2.7
EPK 6.9
Flint 8.7
Colour additions:
green-brown: copper ox. 2, Red iron ox.2
mushroom: manganese ox.1

Copper Matte Turquoise

Barium carbonate 25
Neph. Sy. 56
Ball clay 6
Flint 7
Lithium carbonate 3
Copper carbonate 3

LA Matte

Feldspar 51.6
Flint 5.6
Whiting 18.8
Zinc Ox. 8.6
EPK 15.4
Colour additions:
turquoise: copper ox. 4.5, cobalt ox. .8, rutile 9
light green: copper ox. 3, Red iron ox. 3, rutile 6
dark green: copper ox. 6, Red iron ox. 6, rutile 6
mushroom: manganese ox. 3

Semi Matte

EPK 26
Whiting 25
Feldspar 40
Flint 22

Rhodes 32 (by itself, a frosty white matte)

Feldspar 48.9
EPK 25.1
Dolomite 22.4
Whiting 3.5
Flint 3.3
Rutile 5.0
Colour additions:
brown: Red iron ox. 6, rutile 4
yellow: Red iron ox. 3, rutile 2
turquoise: cobalt ox. .5, chrome ox. .5, rutile 2
grey: Red iron chromate 2

Sandstone

Neph. Sy. 47
Barium carbonate 12
Talc 13
Gerst. bor. 6
EPK 10
Flint 6
Granular ilmenite .5
Red iron ox. 1
Rutile .5

Mustard

Neph. Sy. 36
Barium carb. 20
Dolomite 14
Ball clay 9
Flint 10
Tin ox. 7
Red iron ox. 4

S 16

Whiting 10
Gerst. bor. 12
Barium carb. 8
Magnesium carb. 3
Sodium feldspar 30
Flint 32
EPK 5
Colour additions:
shiney yellow: Red iron ox.3, rutile 4.5, tin ox. 3
olive: copper ox. 2, Red iron ox. 2, rutile 3, tin ox. 3
grey-blue: copper ox. 1, Red iron ox.1, cobalt ox. .8, rutile 3, tin ox. 3

Chun Type Glaze

Sodium Feldspar 42.1
EPK 5.0
Flint 27.2
Whiting 2.6
Gerst. bor. 8.8
Dolomite 8.8
Zinc ox. 1.7
Barium carb. 4.4
Colour additions:
violet: rutile 1, manganese 5
blue-green: rutile 1, copper ox. 1.5
opal blue: rutile 3, cobalt ox .3
green: copper carb. 3, rutile 1
white: tin ox.7
opaque cream: rutile 6.5

Orange

Cornwall stone 50
Whiting 20
Zinc ox. 10
EPK 20
Red iron ox. 6
Tin ox. 4

Stoney Green

Sodium feldspar 41.8
Whiting 17.5
EPK 25.7
Cobalt ox. .5
Red iron ox. 2.0
Nickle ox. 1.5

Pale Yellow

Feldapar 60
Dolomite 27.5
Whiting 10
EPK 25
Flint 59
Red iron ox. 4.5

Matte

Neph. Sy. 25
Feldspar 24
Dolomite 10
Whiting 14
Zinc ox. 9
EPK 24
Flint 15

Copper Blue Matte

Barium carb. 20
Flint 10
EPK 10
Sodium feldspar 55
Talc 5
Copper ox 4
Dolomite 5

Clay Body — cone 8 - 9 oxidation

Georgia kaolin 6.25
Jordan clay 26
EPK 10.75
Bell ball 37.5
Cedar hts. 15
Flint 6.25
Fire Clay 15
Fine grog 10
Buckingham feldspar 6

Steve Irvine
R.R. # 2
Wiarton, Ontario
Canada N0H 2T0
(519) 534 2175
fax (519) 534 5487
steve@steveirvine.com