[meteorite-list] Opinion - Purple in a Meteorite

[E.L. Jones]

Ringwoodite has a dark but purple tint.

Elton

Norm Lehrman wrote:

>Pete,
>
>I don't know if it's been reported in meteorites, but
>if this was earth material, my first guess would be
>vivianite, a hydrous iron phosphate.  It can look
>exactly like that (and is often photosensitive: with
>exposure to sunlight it will darken and often turn
>dark green).
>
>Maybe someone on the list knows or can check their
>references regarding vivianite in meteorites.
>
>Cheers,
>Norm
>(http://tektitesource.com)
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