Mark,
Are you sure it is within the glass or some
substance on the surface only? The photo as you said
shows nothing. Sometimes Chinese tektites and other
Chinese rocks and artifacts meet up with artifical
chemicals, food stuffs and other interesting Chinese
techniques or accidents.
If in
Hello Dirk,
Dirk asked; Are you sure it is within the glass or some substance on the
surface only?'
It does not appear to be on the surface, but I am not sure how the tektite
was cleaned. I did not get the tektite somehwhat dirty as most chinese
tektites usually are. Dimples were clean.
Sorry didnt get this sent back to list.
--- drtanuki [EMAIL PROTECTED] wrote:
Date: Fri, 10 Mar 2006 03:44:28 -0800 (PST)
From: drtanuki [EMAIL PROTECTED]
Subject: Re: [meteorite-list] Any interesting (?)
Chinese tektite
To: MARK BOSTICK [EMAIL PROTECTED]
Mark and List,
Thanks
It looks like a surface effect of some kind and might be a side effect
of cleaning.
I've seen similar effects on minerals and slag where a thin film or
layer on the surface works like an optical filter. If a surface is
covered in a thin layer of a substance with a different optical index it
Mark
I have a tektite with a green ridge on it. Normal? Dunno.
Gary
http://www.meteorite-dealers.com
On 10 Mar 2006 at 4:47, MARK BOSTICK wrote:
Hello list,
Hope everyone is doing well.
This may or may not be interesting, as it may or may not be that unusual.
However, I have sorted
Hi Mark and list,
within the last 6 months, on eBay, someone was selling large Chinese
tektites that were translucent with a purple tinge, I never managed to
obtain one though. The specimens photos were taken in front of a bright
light to allow you to see the colour coming through from
Mark list,
About five years ago, as Cookie and I were helping our
main Chinese supplier unpack at Tucson we found a
couple of dozen like you have pictured. The
coloration is a surface patina like Carnival Glass.
We never determined how it formed, but I have seen
similar patinas developed on
Thanks for your comments Dirk, Kevin and Norm,
Norms comments: The coloration is a surface patina like Carnival Glass. is
better then mine previous.
I imagine it is a man influenced feature. Perhaps I will burn a couple
tektites to see what results that creates and try other ways to create
Mark,
Save your time. As I stated earlier this is due to
a chemical reaction by perhaps a natural process
(alkaline salts) or a man caused chemical process.
The devitrification process (a weathering process) is
similar that you see on old glass bottles that have
been buried or in alkaline salt
Dirk,
As I wrote earlier, I have seen this patina on old
ghost town bottles that have been through a fire.
There IS some connection. Perhaps the common ground
between our comments is that wood ash is strongly
alkaline. I remember my grandma leaching ashes to get
lye to make soap. Perhaps the
This same rainbow effect is often seen on old glass object that have been
subjected to the elements for a number of years. Over the years, I've
found old medicine bottles, window glass and even an old pair of
wire-rimmed spectacles that displayed this effect. Some of the old timers
here in
-
- Original Message -
From: Norm Lehrman [EMAIL PROTECTED]
To: MARK BOSTICK [EMAIL PROTECTED];
meteorite-list@meteoritecentral.com
Sent: Friday, March 10, 2006 9:55 AM
Subject: Re: [meteorite-list] Any interesting (?) Chinese tektite
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