G-40 Feldspar

Description: Potash/sodium/calcium Feldspar

Oxide	Analysis	Formula
CaO	0.80%	0.08
MgO	0.05%	0.01
K2O	10.40%	0.63
Na2O	3.00%	0.28
Al2O3	18.00%	1.01
SiO2	67.56%	6.45
Fe2O3	0.08%	-
LOI	0.16%	n/a
Oxide Weight		573.12
Formula Weight		574.04

Notes

G-40 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-40 Feldspar offers low iron oxide and high alkali oxide content per unit of alumina.

Related Information

Links

URLs	http://www.zemex.com/feldspar/g40spar.html G40 Data Sheet
Materials	G-20 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	+30 mesh: tr +40 mesh: 0.3 +200 mesh: 94.8

By Tony Hansen
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