[meteorite-list] NWA 2620 - name discrepancy solved?

From: Matson, Robert <ROBERT.D.MATSON_at_meteoritecentral.com>
Date: Wed Jan 5 19:07:33 2005
Message-ID: <AF564D2B9D91D411B9FE00508BF1C86904EE62D6_at_US-Torrance.mail.saic.com>

[Resending reply -- first attempt did not post. --Rob]

Hi Adam, Mike and List,

> NWA 2620 will be published in the very next bulletin as an H4,
> Main Mass Hupe Collection. No ifs, ands or buts about it. Why
> is so hard to understand?

Simple repetition of your position doesn't do anything to help
solve the discrepancy. Clearly there's a mistake somewhere. Who's
to say whether the mistake (which may be just a typo) is NAU's fault
or Ted Bunch's?

I have no involvement with NWA 2620, but I can read. And based
on today's posts I have a good guess as to what happened. Note
the sequence in Mike's repost of Ted's message:

> Email dated 12 December 2004
> "Mike: below and attached are the classifications that I can do
> for now. Have a good trip.
>
> Ted
>
> NWA 2620 (F5)
>
> Yellowish-green to brown, friable olivine diogenite. with
> orthopyroxene grains ... <snip>
>
> NWA 2631 (F7)
>
> H5: Fa19.2; S1 W1
>
> NWA 2632 (F8)
>
> LL3.2: Fa1.1-37.4; (Cr2O3 = 0.15-0.37; mean = 0.33 wt %); S1 W1.
>
> NWA 2633 (F9)
>
> CO3.1: Fa 7.7 ? 44.2 (Cr2O3 = 0.05-0.34 wt %); S1 W2 contains many
> small CAI inclusions.
> ...
(The message goes on to list classifications for NWA 2634 & 2635)

Doesn't it seem quite likely that 2620 was a typo, and that 2630
was intended? Kind of coincidental to have a gap of exactly
10 numbers for an otherwise contiguous sequence. The 2 is right
next to the 3 on the keyboard -- an innocent enough mistake.

--Rob

--ADDENDUM--

Another possibility is that there is a 0 vs. 9 typo (again, adjacent
numbers on the keyboard). I like this idea even better since it
would explain the missing F6 in the sequence:

2629 (F5)
[2630 (F6) not yet classified?]
2631 (F7)
2632 (F8)
2633 (F9)
2634 (F10)
2635 (F11)
Received on Wed 05 Jan 2005 07:02:27 PM PST