[meteorite-list] vaca muerta euc- what is it?

From: al mitt <almitt_at_meteoritecentral.com>
Date: Sat, 16 Oct 2010 09:55:05 -0400
Message-ID: <D690A2E36CD34E3AA96A6AF956715E04_at_StarmanPC>

Hi Mckinney,

It's been suggested that mesosiderites are the result of a collision of a
parent body containing eucrite material and core material. The result is a
melting of the material and forming the nearly equal parts of metal to
silicate. There is a lot that is not understood yet about this class, but it
is thought it could have impacted when the core of a asteroid was still
molten with material from the eucrite parent body.

Because of this it is possible that some of the material was melted (as in
your Vaca sample) into a glassy material. I believe there is an absence of
olivine in mesosiderites.

McSween book is a good source for chemical makeup of various types of
meteorites.

--AL Mitterling

----- Original Message -----
From: "mckinney trammell" <bigpineartifacts at yahoo.com>
To: <meteorite-list at meteoritecentral.com>
Sent: Saturday, October 16, 2010 9:21 AM
Subject: [meteorite-list] vaca muerta euc- what is it?


>i have several pieces of vaca muerta "eucrite". it is not like any of the
>other
> euc (soft, granite appearance, white). this is very hard , has a
> "compressed
> granular" textue and is homogenous- all one type of mineral. it is glass/
> olivine -like and take a very hi polish. what is this mineral? why is it
> called
> a "Eucrite" since it does not resemble any of the other ones out there?
> are
> there other "eucrites" made of this material? if so got pix? any info or
> additional other pix of this or other eucrites made of this material
> appreciated.
>
>
>
>
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Received on Sat 16 Oct 2010 09:55:05 AM PDT