Category: Glaze > Blue
Created 2016-04-19 16:41:04 by kenneth ibbett
Categories: Glaze > Blue
Firing Temperature: Δ6-8
Atmospheres: Oxidation
Surface Type: Glossy
Transparency: Transparent

Fires well at Cone 6 -7 , a bit of soak to prevent pin holing, has to be fairly thick blisters at 1250 and runs!

Material Amount Batch Subtotal
Nepheline Syenite (Theoretical) 41
Silica 20
Whiting 15
Gerstley Borate 12
Dolomite 7
Kaolin (Theoretical) 5
Cobalt Carbonate 2
Bentonite 2
Total: 104

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO K2O Na2O KNaO P2O5 Fe2O3 TiO2 CoO LOI
Nepheline Syenite (Theoretical)4124.899.550.040.291.894.025.910.040.29
Gerstley Borate121.780.123.220.422.330.050.480.530.
Kaolin (Theoretical)52.362.010.63
Cobalt Carbonate21.260.74
100% no LOI 56.6213.633.632.2914.862.25.147.340.

Unity Molecular Formula (UMF)



0.19 Na2O
0.05 K2O
0.62 CaO
0.13 MgO


0.31 Al2O3
0.12 B2O3


2.2 SiO2


0.04 CoO





0.25 : 0.75

SiO2:Al2O3 Chart

Closest 100 neighbors in Glaze > Blue.

Click and drag to zoom
Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 7.05

Similar Base Recipes

No recipes with similar base ingredients and amounts were found.

Similar RO/R2O Unity Formulas

No recipes with similar RO/R2O Unity Formulas were found.

Katya Potter 2017-05-01 05:29:59
Stunning colour and very glossy. Very runny. Fired at cone 8.


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
Whiting Harmful WARNING Causes eye irritation
Gerstley Borate
Dolomite Health Hazard DANGER May cause cancer (Inhalation) 1 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
Cobalt Carbonate Health HazardEnvironmental Hazard DANGER May cause cancer
Suspected of causing genetic effects
May damage fertility or the unborn child
May cause allergy or breathing difficulties if inhaled
May cause a allergic skin reaction
Very toxic to aquatic life
Very toxic to aquatic life with long lasting effects
2 0 0 *
Bentonite Harmful WARNING Causes eye irritation
Causes skin irritation
May cause respiratory irritation