Burgess Iceberg Calcined Kaolin

Alternate Names: Icecap K

Oxide	Analysis	Formula
SiO2	51.70%	2.03
Al2O3	43.20%	1.00
Fe2O3	0.20%	-
TiO2	2.00%	0.06
LOI	0.50%	n/a
Oxide Weight		229.26
Formula Weight		230.42

Notes

Conventionally calcined kaolin.
Burgess Icecap K, Iceberg and No. 30 calcined kaolins differ slightly in the pH, brightness, #325 residue, % free moisture. None of the differences should have significant effects on ceramic glaze and body applications.
However their Optiwhite thermo optic kaolins have the same chemistry but have an amorphous particle shape and lower specific gravity.

Related Information

Links

Materials	Calcined Kaolin
URLs	http://burgesspigment.com/BurgessWebsite.nsf/ICEBERG.pdf?OpenFileResource Iceberg Kaolin Datasheet
URLs	https://digitalfire.com/4sight/datasheets/BurgessKaolin.pdf Burgess Kaolin Data Sheet
Typecodes	Kaolin Pure clay mineral, there are many brand names of varying purity and iron content.

Data

GE Brightness	85-92%
% Passing 325 Mesh Wet	99.95+%
Particle Shape (1-7 microns)	Thin flat plate
Density (Specific Gravity)	2.63
Moisture Content - Powder	0.25-0.5%
Median Particle Size (Microns)	1.4 microns
pH for dry powder	5.5

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