PR#3 A2, Saskatchewan ball clay

Chemistry %

CaO	0.25
MgO	0.43
K2O	0.69
Na2O	0.04
P2O5	0.03
TiO2	0.72
Al2O3	18.99
SiO2	65.12
Fe2O3	1.84
MnO	0.01

Volatiles %

LOI

10.58

A2 is a ball clay mined in a quarry about 5 km west of Ravenscrag, Sask. It has a very high plasticity and is suitable as an additive to all types of stoneware and earthenware bodies. This material is used in many bodies made by Plainsman Clays.

A2 has some intrinsic iron content which makes it burn cream-white. It also has some physical iron concretion particles which act as a source of specks and iron blossoms in reduction fired clay bodies employing it.

A2 has natural soluble salts that migrate to the surface during drying and leave a brown coloration on the buff-colored fired surface. However with 0.35% barium to solubles are removed. These soluble salts cause gelling during the deflocculation process and thus prevent A2 from being used in slip bodies.

Analysis updated July 97.

388 Ba ppm
34 Sr pmm
23 Y ppm
10 Sc ppm
413 Zr ppm
1 Be ppm
70 V ppm

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A2 Ball Clay