Daniel Semler on thu 28 apr 05
OK, who said knowing about doing it manually helped prevent garbage in garbage
out !!! Ooops. Sorry Patrick. I omitted one step and gave you a sub that while
correct proportionally (barring the transcription error) is not correct when
actually subbed in a glaze.
The correct values are these, ie :
Australian spod 0.57
EPK 0.06
silica 0.37
Total 1.00
BTW I also had a transcription error in my original - flipped EPK and silica.
The above is correct.
Nutting through why the first response is wrong worth it for those interested
in how all this stuff works.
Thanx
D
> Hi Patrick,
>
> This turned out to be fun.
>
> Without the glaze its hard to see what else I might be trading off but from
> the analyses I have, it looks like a sub could be made for petalite like this
> :
>
> Australian spod 1.0
> EPK 0.64
> silica 0.1
>
> for every 1.0 of petalite.
>
> This will slightly shift the Li2O balance and reduce KNaO. It will bring in
> some other trace stuff, but it could be worth a shot.
>
> With the recipe I might be able to play more but this may well be enough on
> its own. If you want me to take a look feel free to shoot me the recipe
> offline.
>
> Thanx
> D
>
> > Hello,
> > I was wondering if one could replace petalite with
> > spodumene. I understand that petalite has about twice
> > as much silica as spodumene and that there is an extra
> > oxygen atom on the silica strand, how much does that
> > matter? And if replacement is possible I would have to
> > supplement the silica some how. Would it be on a gm to
> > gm basis with the spodumene or would i reduce the gms
> > of spodumene and then match up?. Any help would be
> > greatly appreciated.
> >
> > sicerely
> > -Patrick
> >
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