Both Kaolin and ball clays have precise chemical compositions and
geological origins. Both terms are best avoided unless you know the
chemistry of your clay. White pipe clay or white-firing clay are both
fine cover alls. Basically covering any workable clay with low iron content.
> Hi Guys,
>
> What is the current thinking on the use of ball clay vs. kaolin vs.
> some other descriptor for describing white clay pipe raw material.
> Many years ago, the use of "kaolin" was a sure sign that the speaker
> "really" didn't know what he was talking about ... and "ball clay" was
> the preferred term. But I am pretty sure that I am still seeing
> "kaolin" used pretty regularly ...
>
> Would welcome any comments or references ...
>
> Thanks.
>
> Mark