[meteorite-list] Meteorites with craters

From: fcressy <fcressy_at_meteoritecentral.com>
Date: Wed May 4 19:53:57 2005
Message-ID: <000701c55106$10f0d740$5ccef604_at_pavilion>

Hello Bob and all,

Way back on April 7, Bob asked:

>I wonder if there have been "impact craters" found on
> any other iron meteorites?

Yesterday I was browsing through Nininger's "Out of the Sky" and found one
that
I don't believe has been mentioned. On Plate XXXIV, photo 4 shows a
picture of an Estherville pellet with a small, perfectly shaped crater.
Nininger's caption states: "One of the Estherville pellets (nickle-iron)
bearing a small explosion pit." It looks identical to the small impact
crater observed on Bob's Glorieta Mountain specimen and the small craters
observed on several Sikhote-alin irons.

For those that don't have a copy of "Out of the Sky, the same individual
pellet can be found among a group of Estherville pellets on page 10 of
Nininger's, "METEORITES A Photographic Study of Surface Features. Part 2.
ORIENTATION

In light of the above, I think it could be worthwhile to check out our
Estherville collection nuggets for evidence of cratering and also the many
small Taza irons we have. We could be pleasantly surprised.

Enjoy and check your pellets!
Frank

> Thanks to Michael for posting these images and giving
> us all an opportunity to see them and to discuss them.
>
> And thanks to Jeff for sharing with us his great
> webpage with those excellent images and the
> well-thought explanation.
>
> In an article I wrote 2 years ago, I attempted to
> explain why a similar feature that I found on an
> oriented Glorieta Mountain iron had to be formed
> during its fall. An image of that Glorieta Mountain
> iron with an impact crater can be seen here:
>
> http://www.meteoritetimes.com/Back_Links/2003/January/Bob's_Findings.htm
>
> >
> Bob V.
Received on Wed 04 May 2005 08:04:51 PM PDT