Carrie or Peter Jacobson on wed 31 may 00
Just found a nice store relatively close that sells lots of minerals, in
bite-sized pieces. Quartz, mica, tourmaline, I can't remember much more than
that; the rest of the names were unfamiliar to me. But they were beautiful
rocks, all colors and shapes.
Has anyone tried embedding minerals such as these in clay while firing? Or
splintering them and tossing on while the glaze is wet?
Thanks,
Carrie Jacobson
Bolster's Mills, Maine
Wade Blocker on wed 31 may 00
----------
> From: Carrie or Peter Jacobson
> To: CLAYART@LSV.CERAMICS.ORG
> Subject: minerals
> Date: Wednesday, May 31, 2000 3:57 AM
>
> Just found a nice store relatively close that sells lots of minerals, in
> bite-sized pieces. Quartz, mica, tourmaline, I can't remember much more
than
> that; the rest of the names were unfamiliar to me. But they were
beautiful
> rocks, all colors and shapes.
>
> Has anyone tried embedding minerals such as these in clay while firing?
Or
> splintering them and tossing on while the glaze is wet?
>
> Thanks,
>
> Carrie Jacobson
> Bolster's Mills, Maine
>
> CARRIE, APPLYING STONES TO POTS IS DONE BY NATIVE AMERICANS-EG BITS OF
TURQUOISE. HOWEVER,THE STONES ARE APPLIED AFTER FIRING THE WARE. I IMAGINE
GLUED ON. MIA IN ABQ
friedlover on fri 2 jun 00
No I haven't, but I like how you're thinking.
Rhonda Fried
----- Original Message -----
From: Carrie or Peter Jacobson
To:
Sent: Wednesday, May 31, 2000 2:57 AM
Subject: minerals
> Just found a nice store relatively close that sells lots of minerals, in
> bite-sized pieces. Quartz, mica, tourmaline, I can't remember much more
than
> that; the rest of the names were unfamiliar to me. But they were beautiful
> rocks, all colors and shapes.
>
> Has anyone tried embedding minerals such as these in clay while firing? Or
> splintering them and tossing on while the glaze is wet?
>
> Thanks,
>
> Carrie Jacobson
> Bolster's Mills, Maine
>
>
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Graeme Anderson on tue 6 jun 00
Sapphires and rubies are often heat-treated to improve their colour. =
I'm not certain of this, but I think they are buried in alumina and =
furnace heated to very high temps. Even in a normal stoneware firing, =
they will often change colour, but any impurities/flaws in them show up =
strongly. I often put minerals in the kiln to see what happens. Quartz =
crystal crazed badly, malachite, being high in copper, melted, and ate =
its way through a pad of clay under it, and started to eat into the kiln =
shelf.
Graeme Anderson. Gemopal Pottery. Lightning Ridge.Australia. 2834.
http://www.turboweb.net.au/~gemopal/
Ps. I've finally started to update my home page, and have added photos =
of some of my crystal glazes. One shows the difference of a glaze on =
different clays.
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