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glaze test for turquoise ^6, ox.

updated thu 28 feb 08


Alisa Clausen on wed 27 feb 08

Glaze test for Turquoise ^6, ox.

Source: Clayart

Credited to:

Fired on mid fire white stoneware

Firing ramp with an electric controller is:
100c p/h to 600c (212f - 1112f)
150c p/h to 1140c (302f - 2084f)
80c p/h to 1220c (176f - 2228f)
15 min. soak
cool down max. to 900c (1652f)
Hold 30 minutes

Shut off kiln

Colorants or additives to a 100 gram batch are measured in percent to the
100 gram batch.
Standard Substitutions in all tests:
Local Boron Frit is used for Frit 3134
Forshammer (a half and half Potash and Soda spar) is the only Feldspar used
Local Boron Frit is used for Gerstley Borate
All substitutions are done not by Mol. Wts., but gram for gram.

Recipe Name: Turquoise ^6
Cone: 6 Color:
Firing: Surface: Glossy
Amount Ingredient
35 Feldspar--Custer
16 Silica
17 Zinc Oxide
12 Ball Clay--Old Mine #4
20 Wollastonite
100 Total
3 Copper Carbonate
2 Rutile
1 Zircopax
Unity Oxide
.043 Na2O
.091 K2O
.02 MgO
.357 CaO
.489 ZnO
1.000 Total
.223 Al2O3
.004 Fe2O3
2.226 SiO2
.004 TiO2
10 Ratio
7.3 Exp

Glossy, light green to turquoise glaze. White fur overall under a
transluscent shell.