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Proper storage can minimize most of this deterioration.  Sealed boxes, with
dessicant that is regularly dried, can be effective.  These precautions are
the responsibility of meteorite collectors, who are the temporary
custodians of this material.  Dealers are likewise responsible, and perhaps
should be asked to provide, at reasonable cost, refinishing services for
specimens that deteriorate.  It was noted on the e-mail list that several
dealers have sold sliced specimens that exuded fluids after purchase,
presumably coolant that had not been removed.  Tap water usually contains
chlorine and should not be used on meteorites.

There are some reasons to think that meteorites are good investments.  Many
have appreciated recently.  Some of this is because scientific work has
established interesting histories for these rocks, including.CAIs as
interstellar, Mars rocks possibly containing biological elements, primitive
CCs as cometary, etc.  This work will continue to tend to inflate the value
of meteorites.  The major reason for appreciation in value is because of
increased demand, as new collectors enter the market.  This might continue
as well.  We've all seen how appealing a 'rock from space' is to kids.
However, my opinion is that meteorites are a poor vehicle for investments,
and if 'investment potential' is used as a sales pitch to you.........take
it in good humor, this salesman thinks you're wealthier than you really are!

_______________________________________
Peter Abrahams   telscope@europa.com
the history of the telescope, the microscope,
    and the prism binocular

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