Petras Floating Blue
Chemistry
Recipe
| Material | Amount |
|---|---|
| Nepheline Syenite | 38.0% |
| Flint | 16.0% |
| Frit 3134 | 29.0% |
| Kaolin | 14.0% |
| Talc | 3.0% |
| Bentonite addition | 2.0% |
| Red Iron Oxide addition | 2.0% |
| Rutile addition | 4.0% |
| Cobalt Oxide addition | 1.0% |
Oxide analysis % by weight
| Na2O | 5.2% |
|---|---|
| K2O | 3.6% |
| MgO | 0.1% |
| CaO | 5.4% |
| FeO | 0.1% |
| Fe2O3 | 0.2% |
| Al2O3 | 13.6% |
| B2O3 | 6.1% |
| SiO2 | 54.2% |
| TiO2 | 3.3% |
| ZrO2 | 0.2% |
| LOI | 7.9% |
Some materials have no recorded composition, so the analysis covers the rest of the batch only.
Based on the Petras Floating Blue recipe glazy.org, adapted to materials sourced from CTM Pottery Supplies.