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G-20 Feldspar

Alternate Names: G20 Feldspar

Description: Potash/sodium/calcium 20 mesh Feldspar

Oxide Analysis Formula
CaO 0.60% 0.06
K2O 10.68% 0.64
Na2O 3.33% 0.30
Al2O3 18.20% 1.00
SiO2 66.70% 6.24
Fe2O3 0.08% -
LOI 0.16%n/a
Oxide Weight 560.18
Formula Weight 561.08

Notes

G-20 is a potassium/sodium/ calcium aluminum silicate used as a source of alumina and potash in specialized glass batch formulations requiring higher potassium levels. Carefully beneficiated using the froth flotation process, G-20 Feldspar offers low iron oxide and high alkali oxide content per unit of alumina.

See G200 feldspar (the ore body in Monticello will run out during 2013 and this material will no longer be available).

Related Information

Links

Materials Sil-o-spar
Materials F-20 Feldspar
Materials G-200 Feldspar
Materials G-40 Feldspar
Materials Potash Feldspar
Typecodes Feldspar
The most common source of fluxes for high and medium temperature glazes and bodies.

Data

Bulk Density lbs/cu. ft. (Packed) 90
Sieve Analysis Dry Cumulative: +30 mesh 2.35 +40 mesh 20.2 +200 mesh 96.6 -200 mesh 3.4
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