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Description: PURIFIED HECTORITE

Oxide	Analysis	Formula
CaO	3.53%	0.11
K2O	0.40%	0.01
MgO	18.10%	0.76
Na2O	4.65%	0.13
TiO2	0.17%	-
Al2O3	3.59%	0.06
SiO2	50.70%	1.43
Fe2O3	0.94%	0.01
LOI	17.80%	n/a
Oxide Weight		138.81
Formula Weight		168.87

Notes

An economical blend of beneficiated purified hectorite. Used to promote optimum surface hardening of unfiring ceramic glazes.

Specific Gravity: 2.5
pH (5% dispersion): 9.5-10.5
C.E.C. (meq/100g): 120
Dry Brightness (Green Filter): 75
Color: White
% Moisture Content: 10% Max.
Brookfield Viscosity (60 rpm @ 5% solids): 12,020 cps

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Typecodes	Clay Other Clays that are not kaolins, ball clays or bentonites. For example, stoneware clays are mixtures of all of the above plus quartz, feldspar, mica and other minerals. There are also many clays that have high plasticity like bentonite but are much different mineralogically.

By Tony Hansen
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