Yellow Banks #401

Description: PLASTIC CLAY

Oxide	Analysis	Formula
CaO	0.38%	0.02
K2O	0.01%	-
MgO	0.97%	0.08
Na2O	0.03%	-
TiO2	0.82%	0.03
Al2O3	30.91%	1.00
SiO2	54.61%	3.00
Fe2O3	1.46%	0.03
LOI	10.66%	n/a
Oxide Weight		294.32
Formula Weight		329.44

Notes

Georgie's Pottery Supply in Portland quotes this chemistry:

57.0 SiO₂
27.6 Al₂O₃
1.5 Fe₂O₃
0.3 Fe3o4
1.3 TiO2
0.7 MgO
2.6 K₂O
0.5 Na₂O
LOI 8.5

Moisture 2.5
Pyrometric cone equivalent 31

Related Information

Links

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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