Hi Stephen amd list
At WWU we had a once nice Nantan that was showing signs of rapid corrosion and we got a acrylic container and filled it with argon for a few seconds with the top ready to put into place. It had sealing grommets so would be "air-tight" and we believe its secure enough to keep the argon in.
Nitrogen is another gas that would work I believe but am not sure.
Don't know how the mixing of gases to make new compounds will affect the Nantan over time, but at least the salty Bellingham, WA air cannot get to it any longer.
Mark F
----- Original Message ----- From: "Stephen McMann" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Monday, December 20, 2004 5:06 PM
Subject: [meteorite-list] Sweaty Fingers, Chlorides, and Chondrites
Dear Jorn and List,
I couldn't agree more that a chemical treatment applied to any meteorite
(stony, iron, etc.) ensures that it is no longer pristine. Thinking about
chemical treatments brings up all sorts of philosophical issues about what
collectors can or should do as stewards of meteorites (including the cheap
abundant ones) for future generations. Everyone would probably agree that
plopping a fresh unstudied CM into an organic solvent is inappropriate. On
the other hand, the choice seems less clear when faced with a more common
type that seems to be determined to terrestrialize into iron-rich dirt.
Perhaps I can be a bit more specific about what is bothering me right now.
Little iron-oxide pillars are expanding out of some of my slices of SAU 001
like tree seedlings growing out of a sidewalk. I don't know whether this is
due to indigenous water, indigenous NaCl, mishandling during its many-step
trip from the field to me, or some other factor. However, regardless of the
cause I would like to try to stabilize these pieces and thus preserve some
of their extraterrestrial characteristics. I have some interest in all of
the methods that are available. However, what would be the most useful to
me personally is to know if reasonably effective procedures can be performed
without elaborate equipment.
Sincerely,
Stephen McMann
______________________________________________
Meteorite-list mailing list
[EMAIL PROTECTED]
http://six.pairlist.net/mailman/listinfo/meteorite-list
______________________________________________ Meteorite-list mailing list [EMAIL PROTECTED] http://six.pairlist.net/mailman/listinfo/meteorite-list
