[meteorite-list] Red(dish) Fusion Crust

From: Martin Altmann <altmann_at_meteoritecentral.com>
Date: Wed, 29 May 2013 18:14:31 +0200
Message-ID: <004901ce5c87$9a6ce050$cf46a0f0$_at_de>

Hiho,

I'm thrilled, maybe now many readers of the list
rush to their drawers and showcases, to look for more examples of other
falls,
where they thought before, that the lighter colour was due terrestrial
oxidation and the individuals not that fresh.

Let's wait, what they'll find!
Martin


-----Urspr?ngliche Nachricht-----
Von: Jason Utas [mailto:meteoritekid at gmail.com]
Gesendet: Mittwoch, 29. Mai 2013 18:02
An: Martin Altmann
Betreff: Re: [meteorite-list] Red(dish) Fusion Crust

Hola,
Looking at his page....the Buzzard is red to a much lesser extent.
Good observation, though -- it makes sense that H's would still show at
least some hematite presence, if that is was causes the red coloration.

The first link in my last email goes against what you say above. Note that
the pictured stone has a black, frothy rear and a reddish shield-shaped
front.

Regards,
Jason

www.fallsandfinds.com


On Wed, May 29, 2013 at 8:41 AM, Martin Altmann
<altmann at meteorite-martin.de> wrote:
> Hi,
>
>>But, then...why don't H chondrites usually form such red fusion crusts?
>
> But they do,
> the example on Svend's page is a Buzzard Coulee, and in literature you
> read it about Pultusk.
>
>>This list seems to have a short memory.
>
> Well, the specialty here, is that a colour variation in the crust, if
> found only on one side, can be used as criterion for orientation. Most
> of the examples shown here, underline, that stones must have had at
> least a longer phase of stable flight, because it is indicated by the
> lipping around the edges of these sides. (Which identify the coloured
sides as backsides).
>
> Best,
> Martin
>
>
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Received on Wed 29 May 2013 12:14:31 PM PDT