[meteorite-list] q on storing micromounts

[Meteoryt.net]

Of course! Vinyl Chlorides! - that answers a long standing question I
have had.. I was wondering why a some Micro's I had in Foam (sponge)
cases where rusting and all the others in membranes etc and out in the
open were all fine (even ones from the same fall).

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Maybe there is many different sponge kinds, becouse as I say to Drtanuki,
half of my
collection is in this boxes from a years without opening and pieces are
fine. And I live
in Poland,  not in south of Libia. I hold there irons, chondrites,
achondrites and nothing
rust here.


I especially found that small Gao's stored in boxes with foam stain the
foam with rust over time, and those that aren't don't!


=======
I have Gao in boxes with sponge. El Hammami slice, Pultusk endpieces, Mt
Tazerzait slice
and other H5 :)))

There certainly appeared to be some reaction with the foam. I have
noticed that yellow foam was far worse than the white foam?, presumably
different Plastics are used, chlorides would be the reason!

========
I dont know how this looks on other boxes, but here You have special
material on foam
layer, so meteorite not contact to foam directly. Just look to my photos.

Anyway I will not change my opinion. Boxes are perfect, and many times
cheaper than
membrane boxes or other things


~~~~[ MARCIN CIMALA ]~~~~[ GG 4742912 ]~~~~
http://www.Meteoryt.net             marcin at meteoryt.net
http://www.PolandMET.com       marcin at polandmet.com
http://www.Gao-Guenie.com      GSM +48(607)535 195
~~~~~~[ Member of Polish Meteoritical Society ]~~~~~~