[meteorite-list] Letter from Jeff Grossman concerning NWA 1110 and pairings

From: John K. Gwilliam <jkg_at_meteoritecentral.com>
Date: Thu Sep 9 16:50:41 2004
Message-ID: <6.0.3.0.2.20040909135344.026c83e0_at_mail.theriver.com>

I'd say that this letter from Jeff clears up any misunderstandings that any
of us might have concerning NWA naming/pairing issues.

Best,

JKG

At 11:01 AM 9/9/2004, Adam Hupe wrote:
>Dear List,
>
>Jeff Grossman has been having a hard time posting to the list so I will
>forward his notes:
>
>Adam,
>
>My posts seem to be blocked from the meteorite-list, or at least they are
>disappearing into a black hole. This is what I tried to post twice today.
>
>Jeff
>
>
>The official policy of the Meteoritical Society, as determined by its
>Nomenclature Committee, is that the name NWA 1110 only refers to the
>material described under that name in Meteoritical Bulletin no. 86, which
>has a total weight of 118 g. No other material should be called by that
>name. It is acceptable and routine, however, for people to make statements
>indicating that various numbered stones may be paired (although I would be
>cautious about believing such statements unless they appear in the Bulletin
>or other scientific publications).
>
>All new NWA stones, even if apparently paired with something else, must get
>their own numbers. This is the rule that applies to meteorites collected in
>areas of dense meteorite concentration, including all of those known as NWA.
>Note that this is NOT the same rule that applies if you find another piece
>of Holbrook or Allende... those would inherit the same name unless they
>could be proven to be separate meteorites.
>
>The Committee is considering a new rule that would allow a new NWA stone to
>be paired with NWA 1110. Under this rule, the new stone would have to be
>given a provisional NWA number of its own, NWA xxxx. It would have to be
>characterized by an expert, who would have to submit the evidence for
>pairing to the NomCom. If accepted, and if the type specimen requirement
>based on the aggregate mass has been satisfied, we would announce that NWA
>xxxx was paired with NWA 1110, thereby increasing the TKW by a certain
>amount. NWA xxxx would become an official synonym for NWA 1110. This rule
>has not yet been adopted (it was open for public comment in the early
>summer).
>
>jeff
>
>
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Received on Thu 09 Sep 2004 04:55:17 PM PDT