Norman van der Sluys on tue 22 aug 00
OM4 is a ball clay mined in Kentucky.
SiO2.............55.60%
Al2O3..........28.60
Fe2O3............0.94
TiO2...............1.80
CaO................0.01
MgO...............0.40
K2O...............1.10
Na2O.............1.10
L.O.I.............11.40
Lynne at The Pottery Web wrote:
> I am preparing to test a glaze found in Clayart archives. The recipe calls
> for OM4. I cannot find this ingredient in any of my reference books. I
> was assuming it was a Kona feldspar, but thought I had better check with
> "those who know" before proceeding.
>
--
Norman van der Sluys
by the shore of Lake Michigan just after one doozy of a thunder storm!
Lynne at The Pottery Web on tue 22 aug 00
I am preparing to test a glaze found in Clayart archives. The recipe calls
for OM4. I cannot find this ingredient in any of my reference books. I
was assuming it was a Kona feldspar, but thought I had better check with
"those who know" before proceeding.
Thanks in advance for any help that may be provided!
Lynne in Atlanta
Dale A. Neese on tue 22 aug 00
Old Mine#4 is Ball Clay.
Dale Tex
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