Category: Glaze > Crystalline > Micro
Created 2017-09-13 15:56:26 by Tom Demeranville
Categories: Glaze > Crystalline > Micro
Firing Temperature: Δ5½-7
Atmospheres: Oxidation
Surface Type: Glossy - Semi
Transparency: Translucent

I was hoping for a cone 6 or 7 microcrystalline glaze. This came out.

Also mixed a version without the silica to see what happens.

Also tried a version without whiting.

Next try will sub the whiting for wood ash

Material Amount Batch Subtotal
Spodumene - Australian 50
Potclays/BPS High Alkaline Frit 40
Silica 20
Whiting 10
Total Base:120
Rutile 6
Red iron oxide 4
Bentonite 2
Total: 132

Percentage Analysis

Ingredient Amount SiO2 Al2O3 B2O3 MgO CaO Li2O K2O Na2O KNaO P2O5 Fe2O3 TiO2 MnO LOI
Spodumene - Australian5032.4613.340.023.820.040.080.120.090.040.010.010.1
Potclays/BPS High Alkaline Frit4020.122.281.552.136.946.9813.92
Silica2020
Whiting105.614.39
Rutile60.595.40.01
Red iron oxide43.80.2
Bentonite21.190.40.040.020.020.060.080.070.2
Total13273.7716.011.550.047.783.8277.1214.120.094.55.410.014.9
100% no LOI 58.0412.61.220.036.123.015.515.611.110.073.544.250.01

Unity Molecular Formula (UMF)

FLUXES

RO/R2O

0.25 Na2O
0.16 K2O
0.28 Li2O
0.3 CaO
STABILIZERS

R2O3

0.34 Al2O3
0.05 B2O3
GLASS-FORMERS

RO2

2.69 SiO2
0.15 TiO2
OTHER

 

0.06 Fe2O3
SILICA:ALUMINA

SiO2:Al2O3

7.82

FLUX RATIO

R2O:RO

0.69 : 0.31

SiO2:Al2O3 Chart

Closest 7 neighbors in Glaze > Crystalline > Micro.

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Stull Chart
SiO2:Al2O3 Ratio
SiO2:Al2O3 Ratio 7.82

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Hazards

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
Rutile 1 0 0
Red iron oxide Health Hazard WARNING May cause damage to lung through prolonged or repeated exposure by inhalation
Bentonite Harmful WARNING Causes eye irritation
Causes skin irritation
May cause respiratory irritation