[meteorite-list] Heating moldavites and tektite look-alikes

From: Norm Lehrman <nlehrman_at_meteoritecentral.com>
Date: Thu Jul 21 16:58:51 2005
Message-ID: <20050721205832.81368.qmail_at_web81006.mail.yahoo.com>

All,
Most of you will remember, but there may be some new
members on the list that did not participate in the
last round of "How do you recognize a real tektite?"
list discussions. A sysnopsis of the results is
posted on my website, including pics of a heated
Arizonaite provided by Jim Tobin (this one did
foam--).

http://tektitesource.com/Tektite_tests.html

Regards,
Norm
http://TektiteSource.com


--- JKGwilliam <h3chondrite_at_cox.net> wrote:

> Many of use did a lot of speculating about these
> "Arizonaites" or
> "Grahamites" that were found in Eastern Arizona.
> Both Jim Kriegh and John
> Blennert told me the same story that Bernd just
> related here. I believe
> they even tried heating the test specimens with a
> torch to see what
> specimens would froth and which ones wouldn't.
> I figured that they were Apache Tears since we were
> within 50 miles of an
> area that is known worldwide for it's Apache Tear
> deposits.
>
> JKGwilliam
>
> At 12:57 PM 7/21/2005, bernd.pauli_at_paulinet.de
> wrote:
> >AL wrote:
> >
> >"Someone mentioned one time of putting tektites in
> a microwave oven for
> >a bit (on high) to try to determine if it is an
> Earth based specimen or
> >a possible tektite ... "
> >
> >
> >Hello AL, Doug, Norm, and List,
> >
> >Back in the year 2000, Jim Kriegh experimented with
> Apache tears and those
> >tektite look-alikes from Arizona that I chose to
> simply call Arizonaites
> >(there are 18 of these in my collection which I got
> from Jim and Twink).
> >Here is what Jim wrote:
> >
> >" ... Thought there is something you should know
> about the Arizona
> >'whatevers'.
> >I had a chemist friend (he also has studied
> geology) heat one of them in
> >an oven
> >along with an Apache tear. The Apache tear foamed
> as the water started
> >coming out
> >of it. The Arizonaite showed no signs of water. He
> even raised the temperature
> >another 500 degrees F above what the Apache tear
> started foaming and all the
> >Arizonaite did was glow red. After cooling it
> looked the same as before. I
> >am going
> >to test some more to see if any moisture shows up.
> Dr. Kring decided to
> >look at some
> >after I told him about no moisture in them but he
> said he still thinks
> >they must be
> >volcanic in source."
> >
> >This should also be applicable to "real", "genuine"
> tektites and
> >moldavites, and those man-made glasses we are
> talking about.
> >
> >but, please, be careful in case anyone should try
> (safety goggles, etc.!)
> >
> >
> >Best wishes,
> >
> >Bernd
> >
> >
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>
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>
>
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Received on Thu 21 Jul 2005 04:58:32 PM PDT