dianamp@COMCAST.NET on thu 2 sep 10
Here is the cone 10 Iron Red formula.
Custer 44
Flint 20
EpK 6
Talc 6
Whiting 7
Bone Ash 10
Red Iron Oxide 15
Bentonite 2
In my notes we lowered the Flint
at various times.
And increased the Iron from 10.5.
I have 6.34 as the Si/Al ratio.
Don't know if that is correct.
Diana Pancioli
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