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Re: Brief look at pallasites
- To: meteorite-list@meteoritecentral.com
- Subject: Re: Brief look at pallasites
- From: Matt Morgan <mhmeteorites@geocities.com>
- Date: Thu, 05 Mar 1998 14:43:10 -0700
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- Organization: MHM
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- Resent-Date: Thu, 5 Mar 1998 16:43:59 -0500 (EST)
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Jim:
The color change is also due to the solid-solution series of Olivine
(Forsterite-Fayelite end-members). The Forsterite is the lime green color due to
the Mg, where the Fe end-member Fayelite is an olive green color. It is not
unusual to see these differences throughout a single pallasite.
Matt
Jim Strope wrote:
> Darryl and Matt:
> I would tend to agree with you on the cause being terrestrialization or
> Lawrenceite disease.
> However, what does not make sense is that the brown crystals seem to
> not be related to their location in the meteorite (Esquel). Some green
> crystals lie near the outside edge and brown ones closer to the center.
> There is also an area where a brown crystal is surrounded by green
> ones. Go figure??
> Jim
--
Matt Morgan
Mile High Meteorites
http://www.mhmeteorites.com
References: