Minspar 1

Description: Coarse grained glass feldspar

Oxide	Analysis	Formula
CaO	1.50%	0.15
K2O	4.10%	0.25
Na2O	6.50%	0.60
Al2O3	18.50%	1.04
SiO2	68.60%	6.52
Fe2O3	0.06%	-
LOI	0.30%	n/a
Oxide Weight		566.87
Formula Weight		568.58

Notes

Spruce Pine, NC
A minus 30 mesh feldspar product used in the glass container and ceramic tile markets.

Physical Properties
===================
Specific Gravity: 2.6
Refractive Index: 1.53
Mohs Hardness: 6-6.5
Mean Particle Size, microns: n/a
Specific Surface Area, sq metre/g: n/a
Dry Brightness (Green Filter): n/a
Raw color: white
pH: n/a
% Moisture Content: 0.1
Bulk Density (lb/cu. ft)
Loose: 95.0
Packed: 100

Structure: Crystalline
Particle Shape: Granular

Particle Size: 16 20 30 40 100 140 170 200 325
% Retained 0.0 0.0 0.7 11.3 60.0 12.0 10.0
U.S. Sieve Series

Related Information

Links

Typecodes	Feldspar The most common source of fluxes for high and medium temperature glazes and bodies.

By Tony Hansen
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