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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