[Clayart] Crystals

James Miner woodfirejim at gmail.com
Tue Sep 28 02:00:29 UTC 2021


The geologist in me thinks it's a waste of good amethyst, since I suspect
the amount of trace minerals that color the crystal will be far too low to
be interesting in a glaze, but you never know!

Cheers
Jim

On Mon, Sep 27, 2021 at 8:49 PM Deborah Thuman <debthuman at zianet.com> wrote:

> I got to thinking. I do that now and again. I took a geology class a year
> ago and learned that fast cooling makes micro crystals and slow cooling
> makes macro crystals. Quartz is one of those fascinating igneous minerals
> that does wild stuff. Amethyst is quartz. Quartz can be clear. Quartz can
> be opaque…. Anyone here ever experimented with using quartz in a glaze?
> Not just silicon dioxide, but ground up quartz? What happens if you use
> ground up amethyst in a glaze?
>
> Deb Thuman
> debthuman at zianet.com
> DebThumanArt.com
> https://www.spoonflower.com/profiles/deb_thuman
>
> You measure a democracy by the freedom it gives its dissidents, not the
> freedom it gives its assimilated conformists.
>
> Abbie Hoffman
>
>
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> https://lists.clayartworld.com/pipermail/clayart/attachments/20210927/cbdb599d/attachment.htm
> >
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.clayartworld.com/pipermail/clayart/attachments/20210927/6940d420/attachment.htm>


More information about the Clayart mailing list