Minsilspar
| Oxide | Analysis | Formula | Tolerance |
|---|---|---|---|
| CaO | 1.10% | 0.15 | |
| K2O | 2.80% | 0.23 | |
| Na2O | 4.90% | 0.62 | |
| Al2O3 | 14.00% | 1.07 | |
| SiO2 | 76.80% | 9.96 | |
| Fe2O3 | 0.06% | - | |
| LOI | 0.30% | n/a | |
| Oxide Weight | 776.39 | ||
| Formula Weight | 778.72 | ||
Notes
Spruce Pine, NC
A 170 mesh feldspathic sand (sand-spar) product used primarily in the sanitary-ware industry.
Physical Properties
===================
Specific Gravity: 2.6
Refractive Index: 1.53
Mohs Hardness: 6-6.5
Mean Particle Size, microns: 19
Specific Surface Area, sq metre/g: 0.6-0.7
Dry Brightness (Green Filter): 91
Raw color:
pH: 8.2
% Moisture Content: 0.1
Bulk Density (lb/cu. ft)
Loose: 52
Packed: 83
Structure: Crystalline
Particle Shape: Granular
Particle Size: 100 140 170 200 325
% Retained 0.1 0.3 0.4 1.2 10.0
U.S. Sieve Series
Particle Size, Microns: 30 20 10 5
(% finer than) 75% 60% 30% 12%
Related Information
Links
| Typecodes |
Feldspar
The most common source of fluxes for high and medium temperature glazes and bodies. |
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