George Koller on wed 8 oct 03
Isomorphic substitution is about the interior of the crystals, where one
atom exchanges for an alternative one. Adsorption is about the exterior of
the crystal.
Ivor,
So this may be well understood stuff that I'm only beginning to
fathom?! Again. "My idea" has been - what I'm now prepared
to start experimenting with is using a "heavy" concentration of a
weak colored crystal former like Zinc or Iron(?) then tagging it
with Co, Cr, one of the colorful players.
My hunch is that this is not a 1/10 the atom count yields 1/10
the color kind of thing.
Test tubes on order...labcoat cleaned, I'm ready to start mixing
and testing.
An eventual ability to control small crystalline growth (turn it on/off -
keep it somewhat within ranges) by adding / not adding something
to our solutions would be a powerful tool for building images.
Hooked on crystals to add some depth, pizazz. It shows off this
technology versus decals.
george koller
sturgeon bay, wi - door county
northport, mi - leelanau county
two great places separated by 100 miles of great lake.
iandol on thu 9 oct 03
Dear George Koller,=20
Although I do not know the technical and scientific details I believe =
Zinc Silicate has the ability to participate in this Isomorphous =
substitution reaction, which explains why it is possible to get tinted =
crystals of Willemite From My reading, though I can't recall a =
reference, Manganese is a prime example and I have obtained blue =
crystals with Cobalt Carbonate.
Perhaps all we can do is play with the stuff and watch what happens. I =
do know that Italian sources made artificial gemstones using Willemite =
and they were available in may tinted colours. there may be something =
about that in the archives. A good place to start looking is the =
Gemstone and Jewellery Bibliography of John Sinkankas (2 Vols)
Best regards,
Ivor Lewis, Redhill, South Australia
George Koller on fri 10 oct 03
Dear George Koller,
Although I do not know the technical and scientific details I believe Zinc
Silicate has the ability to participate in this Isomorphous substitution
reaction, which explains why it is possible to get tinted crystals of
Willemite From My reading, though I can't recall a reference, Manganese is a
prime example and I have obtained blue crystals with Cobalt Carbonate.
Perhaps all we can do is play with the stuff and watch what happens. I do
know that Italian sources made artificial gemstones using Willemite and they
were available in may tinted colours. there may be something about that in
the archives. A good place to start looking is the Gemstone and Jewellery
Bibliography of John Sinkankas (2 Vols)
Mr. Lewis,
"Playing with this stuff" is what this feels like, indeed. I don't know,
or have any indication yet if each metal will behave differently
and form it's own unique crystal, or if most or all will "merely" add color
to the crystals we suspect is being formed from Zinc.
Nobody yet has looked at the tile picture and recognize the crystal type -
it is diffiucult otherwise to describe.
Did you perhaps see it at: http://imagesonclay.com/mulberry.html ?. (The
color is not accurate, the depth has been lost, but
it is a decent scan for the purpose of showing the crystals - which are
easily seen by the naked eye.)
My test tubes are on order, more chemicals are coming in from all around,
and my labcoat has been cleaned and pressed.
Let the testing begin!
Thanks for clues, macro crystallier Fara Shimbo is also looking over my
shoulder. I'm likely falling between interest groups
here, nothing new, some new territory is being explored.
Thank you,
george koller
sturgeon bay, wi - door county
northport, mi - leelanau county
two great places separated by 100 miles of great lake.
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