Category: Glaze > Crystalline
Created 2001-11-18 08:00:00 by Glazy Admin
Categories: Glaze > Crystalline
Firing Temperature: Δ5-6
Atmospheres: Oxidation
Surface Type: Satin - Matte
Transparency: Opaque

Glaze Type: Mid-fire

From Shannon Nelson

Material Amount Batch Subtotal
Nepheline Syenite (Theoretical) 34.2
Kaolin (Theoretical) 17.5
Silica 16.3
Magnesium carbonate 11
Whiting 10.5
Frit 3134 10.4
Total Base:99.9
Cobalt Carbonate 6
Copper Carbonate 6
Total: 111.9

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO K2O Na2O KNaO Fe2O3 CoO CuO LOI
Nepheline Syenite (Theoretical)34.220.767.970.030.241.573.354.920.030.24
Kaolin (Theoretical)
Magnesium carbonate115.265.74
Frit 313410.44.842.
Cobalt Carbonate63.782.22
Copper Carbonate63.862.14
100% no LOI 52.9415.832.535.588.681.664.666.330.043.994.08

Unity Molecular Formula (UMF)



0.19 Na2O
0.05 K2O
0.4 CaO
0.36 MgO


0.4 Al2O3
0.09 B2O3


2.28 SiO2


0.14 CoO
0.13 CuO





0.24 : 0.76

SiO2:Al2O3 Chart

Closest 100 neighbors in Glaze > Crystalline.

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Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 5.67

Similar Base Recipes

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Similar RO/R2O Unity Formulas

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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
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
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
Magnesium carbonate WARNING Causes mild skin irritation
Causes eye irritation
Whiting Harmful WARNING Causes eye irritation
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 *
Copper Carbonate Harmful WARNING Harmful if swallowed.
Causes skin irritation.
Causes serious eye irritation.