[meteorite-list] Crust on old meteorites - Campo, Nantan, Morasko type

[tracy latimer]

Marcin sez:
>If spacimen stay in my room for year and its stable, then Im sure its 
>stable
>enough to stay stable for years. Ofcourse there could be alvays someone who
>have skills to make rusty not only my morasko, but also Taza or Chinga :)
>

I regret to say that I am one of those people who has trouble with Chinga 
rusting.  I purchased a small mirror-polished slice from ebay 4 or 5 years 
ago, and unfortunately the Hawaiian salt air has taken its toll, despite a 
light film of oil and being sealed in a gem jar.  One end has a fine web of 
rust, and it will require the NaOH-alcohol treatment, probably after the 
holidays when things aren't so busy.

Oddly enough, Dronino a notorious ruster has not rusted for me (yet), and my 
Nantan, although it came with a fine film of oxide, has not crumbled to 
shale and lawrencite yet!  It just goes to show you can't tell by casual 
inspection which meteorites will rust despite your tender care, and which 
will perversely(?) stay whole.

Tracy Latimer

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