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chrome blushing on zircopax glazes

updated fri 16 feb 01

 

Louis Katz on thu 15 feb 01


Yup
I have seen it too. Pink Chrome blush on Ultrox opacified glazes. The gla=
ze was
Vivika's Majolica. In the same firing it did not and has not appeared on =
other
glazes. I have assumed that this is because of the stiffness of the Vivik=
as, the
pink doesn't maybe dissolve into the melt.
Louis
By the way this one really likes to crawl.


Glaze name: VIVIKA'S MAJOLICA HITEMP.revised no Ba .tamucc
Cone: 10
Color: white
Testing: Tested
Surface texture: Shiny or Glossy
Firing: Reduction
Glaze type: Majolica

Recipe: Percent
Strontium Carbonate 2.01
whiting 12.56
Zinc Oxide 2.01
Minspar 200
Ultrox 9.15
Flint 21.71
Totals: 100.00 %

Also add:
Bentonite 2.00

Comments:
Add 1.00Tablespoon of Magnesium Sulfate to a 20,000 gram batch. Make sure=
to
dissolve in water first.
Minspar is a soda feldspar


Unity Formula for VIVIKA'S MAJOLICA HITEMP.tamucc:
0.089 K2O=A0 0.374 Al2O3 3.949 SiO2=A0
0.214 Na2O 0.195 ZrO2=A0
0.545 CaO=A0 10.6:1 Si:Al Ratio
0.097 ZnO=A0
0.054 SrO=A0

Percentage Analysis:
64.98 % SiO2
10.44 % Al2O3
2.30 % K2O
3.64 % Na2O
8.38 % CaO
2.16 % ZnO
1.53 % SrO
6.57 % ZrO2