Fortispar
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| SiO2 | 64.85% | 6.61 | |
| Al2O3 | 18.06% | 1.08 | |
| Fe2O3 | 0.07% | - | |
| CaO | 0.14% | 0.02 | |
| MgO | 0.03% | - | |
| K2O | 13.18% | 0.86 | |
| Na2O | 1.25% | 0.12 | |
| LOI | 0.26% | n/a | |
| Oxide Weight | 597.49 | ||
| Formula Weight | 599.05 | ||
Notes
I-Minerals states that they are "focusing on potassium feldspar (K-spar). Deposits of high quality K-spar that can be economically extracted are rare. This rarity of quality deposits has resulted in K-spar selling at much higher prices than sodium feldspar. At present there is no domestic U.S. production of K-spar with K2O purities in excess of 10.0%. I-Minerals is developing a series of K-spar products under the Fortispar TM branding in the 12.5% to 13% K20 range. Fortispar products will be offered in 200, 325 and 635 mesh grinds to meet the requirements of a given industry."
Fortispar is a high quality potassium/sodium/calcium aluminum silicate used as a source of alumina and potash in ceramic, paint, and other
applications. Carefully beneficiated using the froth flotation process, Fortispar™ K offers low iron oxide and high alkali oxide content per unit of alumina.
Related Information
Links
| URLs |
https://www.imineralsinc.com/assets/docs/productsheets/fortispar-k.pdf
Fortispar Data Sheet |
| Materials |
Mahavir Potash Feldspar
|
| Materials |
Custer Feldspar
The most common potash feldspar used in ceramics in North America. While having been a standard for many decades its supply appears in doubt in 2024. |
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