[meteorite-list] moldavite splashforms w/ artifacts. Inquiry?

From: Guy Heinen <guyhein_at_meteoritecentral.com>
Date: Thu Apr 22 10:14:09 2004
Message-ID: <5.2.1.1.1.20030430223724.00a5b0a0_at_mailsvr.pt.lu>

Hi list and Zelimir,

as there is a lot of discussion on tektite sculpture, have a look on my=20
site '<http://webplaza.pt.lu/guyhein/thebook.html>.
It has a link to the entire chapter 'tektite sculpture' of my book. Enjoy!

The special offer ($12 + shipping) for a signed copy of my book is valid=20
until next Sunday (inclusive).
All the best from Luxemburg,
Guy


At 21:25 30/04/2003 +0200, Zelimir Gabelica wrote:

>Hi Guy and list,
>
>
>Regarding moldavites and their chemical etching/weathering, let me describe
>an extraordinary tektite I have acquired a couple of years ago, that might
>throw some light (or trouble ?) to the debate.
>
>This is an about 8 cm elongated "cylindrical dumb-bell" shaped dark green
>tektite, about 2 cm thick, actually a very ordinary shape and morphology.
>But there is more.
>It is not complete but cut into 2 matching halves. NATURALLY cut! And the 2
>cut faces are PERFECTLY PLANAR so that one would believe someone would have
>cut it with a giant knive while still in a semi molten (very viscous)=
 state.
>So far, nothing so very strange.
>But there is still more.
>The planar (cut faces) are also CORRODED, with etching fugures very similar
>to those present on the external surface.
>
>This means to me that once the tektite was "cut" (or naturally broken), it
>was further submitted to the usual etching process on its falling site.=
 And,
>the 2 cut surfaces, although etched, still match so perfectly that, when
>sticked together, one would not even guess the tektite is broken. It is
>obviously difficult to say if every corrosion figure of the face "a" would
>perfectly match the similar corrosion counterpart (if any) on the face "b".
>Although some more carefull investigationof this feature could be=20
>interesting...
>
>OK, let's assume the tektite fell in a semi molten state, broke through=
 some
>shock and then started its weathering process quasi evenly on every
>accessible face, including the 2 broken surfeces.
>But the question is: why the broken faces are completely PLANAR ?
>When an elongated tektite is broken by, say, a shock, the faces would
>probably not be planar if the tektite is hard. This example however=
 suggests
>that the breakage resulted, for some obscure reason, in generating 2 planar
>faces...
>
>My question to the list experts: why was the tektite "naturally" broken in=
 a
>so strange way? I say "naturally" as I doubt some human (if any present 19
>MY ago ??), when he would notice the tektite falling, would take his axe or
>giant knive and hack it while not yet solidified (and thus probably hot).
>
>I'd try to show you a photo of this strange tektite within the next days.=
 At
>least, this all could suggest (prove ?) that some mechanical breakage
>occurred BEFORE the etching process even started. If so, the breakage or
>cutting first provided 2 smooth planar surfaces that soon started their
>etching process.
>
>I got this strange tektite a few weeks too late to be included and=
 described
>in Guy's wonderful book. But rather than awaiting for the enxt edition, I'd
>like to hear first about Guy Henien (or anybody else's) expertized=
 comments.
>
>All the best
>
>Zelimir
>
>Note: Guy Neinen's book & CD Rom " TEKTITES - witnesses of cosmic
>catastrophes" will also be available for sale, on consignment, at the next
>Ensisheim show
>-------
>
>At 17:28 28/04/03 +0200, Guy Heinen wrote:
> >Hi list,
> >
> >as I must notice, besides some real specialists, many list members have
> >only poor notions of tektites.
> >In the late nineties, I've written a book on tektites: 'TEKTITES -
> >witnesses of cosmic catastrophes',
> >dealing with almost all questions about tektites. Have a look at my site
> ><http://webplaza.pt.lu/guyhein/index.html>
> >For the members of this list, I'll offer my book from now to next Sunday
> >for the bargain price of only 12!!!$ or =80, postage not included.
> >Please contact me off-list.
> >Thanx and my best wishes,
> >
> >Guy Heinen
>******************************************************
>Prof. Zelimir Gabelica
>Groupe S=E9curit=E9 et Ecologie Chimiques (GSEC) - ENSCMu
>3, rue A. Werner
>F-68093 MULHOUSE Cedex, FRANCE
>Tel: +33 (0)3 89 33 68 94
>FAX: +33 (0)3 89 33 68 15
>e-Mail: Z.Gabelica_at_uha.fr
>******************************************************
>
>
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Received on Wed 30 Apr 2003 04:48:05 PM PDT