Oct 22, 2026: We are working on protecting our servers against the PHP2Shell vulnerability recently discovered. Servers were upgraded ahead of schedule on Oct 21. This could cause some issues. Please contact us if you encounter any.
Alternate Names: FFF K6 Feldspar
Description: Finnish Potash feldspar
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| SiO2 | 66.30% | 7.14 | |
| Fe2O3 | 0.10% | - | |
| Na2O | 5.50% | 0.57 | |
| Al2O3 | 18.60% | 1.18 | |
| K2O | 6.20% | 0.43 | |
| SO4 | 0.30% | n/a | |
| Oxide Weight | 625.78 | ||
| Formula Weight | 627.66 | ||
| Typecodes |
Feldspar
The most common source of fluxes for high and medium temperature glazes and bodies. |
| URLs |
http://ceramics.sibelcotools.com/tiles/porcelain-tiles/feldspar/
Sibelco Feldspar data |
![]() PayPal | No tracking, No ads, No paywall, No transient content! Just organized, concise information constantly updated and improved. Was this helpful? Consider supporting me. |
| By Tony Hansen Follow me on ![]() | ![]() |
Buy me a coffee and we can talk