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Alternate Names: Feldspat 635
| Oxide | Analysis | Formula | Tolerance | 
|---|---|---|---|
| CaO | 0.79% | 0.09 | |
| MgO | 0.34% | 0.05 | |
| K2O | 0.32% | 0.02 | |
| Na2O | 8.62% | 0.84 | |
| TiO2 | 0.13% | 0.01 | |
| Al2O3 | 16.30% | 0.97 | |
| SiO2 | 72.84% | 7.35 | |
| Fe2O3 | 0.11% | - | |
| LOI | 0.55% | n/a | |
| Oxide Weight | 602.92 | ||
| Formula Weight | 606.25 | ||
Available in 10, 25 and 50mm sizes.
| Minerals | 
Quartz
 Quartz is the most abundant mineral on earth, it is the main crystalline mineral form of silica (SiO  | 
| Minerals | 
K-Feldspar
 Most common feldspars contain both sodium and potassium. The term K-Feldspar designates one where th  | 
| Minerals | 
Na-Feldspar
 Most common feldspars contain both sodium and potassium. The term Na-Feldspar designates one where t  | 
| Minerals | 
Kaolinite
 The most fundamental clay mineral. This mineral is found in nature in its purest form as kaolin. How  | 
| Materials | 
Feldspar 632
 | 
| Materials | 
Feldspar 645
 | 
| Materials | 
Feldspar 661
 | 
| Typecodes | 
Feldspar
 The most common source of fluxes for high and medium temperature glazes and bodies.  | 
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