Category: Glaze > Clear
Created 1996-03-25 08:00:00 by Glazy Admin
Categories: Glaze > Clear
Firing Temperature: Δ6
Atmospheres: Oxidation, Reduction
Surface Type: Glossy
Transparency: Translucent

The base glaze is shiny, almost clear, that is a little fluid at ^6+
A nice 'hint' of blue can be the effect
of a small amount of Cobalt in a transparent glaze with a fair amount
of Rutile. and Iron wash under it can also cause interesting
variations. This gives a good white with 5% rutile, with opalescent
tones and, with luck and a good clay to work on, some blues. Try
adding a small amount of Cobalt. Note that there is no
clay-- you may need to use a suspender, or add a little Bentonite.
The Strontium I substituted for Barium is a little coarse and can
settle. If you try it- please let me know the results. submitted by:
Bill Aycock e-mail:

Material Amount Batch Subtotal
Frit 3134 34.7
Silica 28.8
Potash Feldspar (Theoretical) 17.6
Kaolin (Theoretical) 10.6
Strontium Carbonate 4.9
Zinc Oxide 3.3
Whiting 0.2
Total: 100.1

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 CaO SrO ZnO K2O Na2O KNaO LOI
Frit 313434.716.148.016.983.573.57
Potash Feldspar (Theoretical)17.611.43.222.982.98
Kaolin (Theoretical)
Strontium Carbonate4.93.441.46
Zinc Oxide3.33.3
100% no LOI

Unity Molecular Formula (UMF)



0.2 Na2O
0.11 K2O
0.11 SrO
0.14 ZnO
0.44 CaO


0.25 Al2O3
0.4 B2O3


3.53 SiO2





0.31 : 0.69

SiO2:Al2O3 Chart

Closest 100 neighbors in Glaze > Clear.

Click and drag to zoom
Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 13.91

Similar Base Recipes

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09/2016 Note: This is a new feature. If a recipe material is not listed, that material's data has not yet been added. Some materials only have GHS ratings, while others only have HMIS ratings. Warnings differ between systems and countries. Glazy does not take any responsibility for accuracy of linked SDS information. Contact your ceramics supplier for safety information for your specific materials.
Globally Harmonized System (GHS) Hazardous Materials Identification System (HMIS) SDS Link
Material Pictograms Signal Word Hazard Statements Health Flammability Hazard Protection
Silica HarmfulHealth Hazard DANGER From 200-Mesh SDS:
May cause cancer by inhalation.
Causes damage to lungs through prolonged or repeated exposure by inhalation.
* 0 0 E
Kaolin (Theoretical) HarmfulHealth Hazard DANGER SDS for EPK KAOLIN: EPK Kaolin is a naturally occurring mineral, which may contain amounts of crystalline silica
typically 0.1-1.0%, may cause damage to respiratory system through prolonged or repeated
Strontium Carbonate Harmful WARNING Product dust may be irritating to eyes,skin and respiratory system.  1 0 0 E
Zinc Oxide 0 0 0 *
Whiting Harmful WARNING Causes eye irritation