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Fortispar

Oxide Analysis Formula
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, Fortisparâ„¢ 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.
By Tony Hansen
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