•The secret to cool bodies and glazes is a lot of testing.
•The secret to know what to test is material and chemistry knowledge.
•The secret to learning from testing is documentation.
•The place to test, do the chemistry and document is an account at https://insight-live.com
•The place to get the knowledge is https://digitalfire.com

Sign-up at https://insight-live.com today.


Oxide Weight776.39
Formula Weight778.72
If this formula is not unified correctly please contact us.

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%

Out Bound Links

By Tony Hansen

XML for Import into INSIGHT

<?xml version="1.0" encoding="UTF-8"?> <material name="Minsilspar" descrip="" searchkey="" loi="0.00" casnumber="12168-80-8"> <oxides> <oxide symbol="CaO" name="Calcium Oxide, Calcia" status="" percent="1.100" tolerance=""/> <oxide symbol="K2O" name="Potassium Oxide" status="" percent="2.800" tolerance=""/> <oxide symbol="Na2O" name="Sodium Oxide, Soda" status="" percent="4.900" tolerance=""/> <oxide symbol="Al2O3" name="Aluminum Oxide, Alumina" status="" percent="14.000" tolerance=""/> <oxide symbol="SiO2" name="Silicon Dioxide, Silica" status="" percent="76.800" tolerance=""/> <oxide symbol="Fe2O3" name="Iron Oxide, Ferric Oxide" status="" percent="0.060" tolerance=""/> </oxides> <volatiles> <volatile symbol="LOI" name="Loss on Ignition" percent="0.300" tolerance=""/> </volatiles> </material>

Feedback, Suggestions

Your email address


Your Name


Copyright 2003, 2008, 2015 https://digitalfire.com, All Rights Reserved