Lithospar
Lithospar is a natural mineral primarily composed of silica and alumina, with smaller amounts of sodium, potassium, calcium, and lithium. It is associated with feldspar and quartz deposits, particularly in regions like Tysfjord, Norway. In ceramic glazes, Lithospar acts as a flux, helping to lower the melting temperature.
- Material class: feldspar
- Glaze role: flux
Oxide Analysis (wt%)
| Oxide | wt% |
|---|---|
| SiO₂ | 69.03 |
| Al₂O₃ | 21.59 |
| Na₂O | 4.02 |
| K₂O | 2.90 |
| Li₂O | 1.99 |
| CaO | 0.48 |