[meteorite-list] Unusual phenomen during etching iron meteorites

From: PolandMET <marcin_at_meteoritecentral.com>
Date: Wed, 26 Aug 2015 10:46:27 +0200
Message-ID: <BC8918A58A434E518C7CF9C063BAC3A6_at_meteorytf1cafb>

> Hello Marcin,
>
> Very unusual to see. With no knowledge on this subject, i'll try at a
> Possible
> "solution" (no pun intended)...........
>
> If, if, as you say, all slices were prepared the same and no other coating
> was
> left on on the piece(s) that wouldn't take the etch---is it Possible that
> they may
> have somehow become electomagnetically charged (preventing the chemical
> bond)
> and the piece you used to scratch the object piece broke/relieved this
> charge
> in order for the solution to begin its work??
>
> Mirko?
>
> All best, John


Yes this can be one reasonable explanation. But this is like You put finger
into the fire and nothing happend :)
Looks like Force is with me and my slices!

-----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
http://www.Meteoryty.pl marcin(at)meteoryty.pl
http://www.PolandMET.com marcin(at)polandmet.com
http://www.Gao-Guenie.com GSM: +48 (793) 567667
--------[ Member of Polish Meteoritical Society ]--------




> ----- Original Message -----
> From: "PolandMET via Meteorite-list" <meteorite-list at meteoritecentral.com>
> To: <meteorite-list at meteoritecentral.com>
> Sent: Tuesday, August 25, 2015 4:57 PM
> Subject: [meteorite-list] Unusual phenomen during etching iron meteorites
>
>
> Dear meteorite friends.
> Tooday I etched some Maslyanino slices and beetween 10 of them, two slices
> do not want start etching. I was able to capture this very strange
> phenomen
> with my macro lens. I cant explain this. Maybe someone can ?
>
> Let me explain whats going on here.
> Normaly, when slice is placed in etching solution, etching starts
> immediately in the same second. But rarely, I can keep slice even 5 or 10
> minutes without any signs of etching. On this video, there is one of 10
> slices of Maslyanino that comes from same slice divided to smaller
> specimens, so material was prepared 100% the same. Only two of this 10
> slices can't be etched in normal way. They need a starter. This mean I
> need
> to scratch them with other slice to start etching. This is visible at 1:40
> when I finally use correct slice to start etch reaction. You can see then
> how solution move from the place of scratch in all direction and etching
> starts immediatelly.
>
>
>
> https://www.youtube.com/watch?v=Sd9s56NuTVQ&feature=youtu.be
>
> -----[ MARCIN CIMALA ]-----[ I.M.C.A.#3667 ]-----
> http://www.Meteoryty.pl marcin(at)meteoryty.pl
> http://www.PolandMET.com marcin(at)polandmet.com
> http://www.Gao-Guenie.com GSM: +48 (793) 567667
> --------[ Member of Polish Meteoritical Society ]--------
>
>
>
>
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Received on Wed 26 Aug 2015 04:46:27 AM PDT