[meteorite-list] re: cinnabar in meteorites

From: chris aubeck <caubeck_at_meteoritecentral.com>
Date: Sat Aug 28 08:57:49 2004
Message-ID: <20040828125747.76589.qmail_at_web50808.mail.yahoo.com>

Hi Bernd,

That helps enormously!

In fact, I was thinking of several cases in which
stones said to have dropped from the sky bore veiny
"letters" on their surface, cinnabar-coloured scrawl
that people interpreted as messages from God. Having
seen narrow lines of cinnabar in rock, I wondered
whether a connection existed.

Judging by your reply, there is probably no direct
link, but I had to establish the negative before
moving on.

Thanks again,

Chris



 --- bernd.pauli_at_paulinet.de wrote:
> > I have found some historical accounts of
> meteorites
> > with red veins, supposedly cinnabar. Can such
> things be?
>
> Hello Chris and List,
>
> I f you are talking about Colston Bassett - the
> answer is definitely
> no because it is a pseudometeorite. The Catalogue
> says that :
> "A boulder lying in the churchyard has been
> identified as cinnabar,
> probably from Peru. Its meteoritic origin appears to
> be 'purely a
> fabrication of local legend', W.A.S. Sarjeant, The
> Mercian Geologist,
> 1971, 4, p. 41."
>
> If you are talking about Allende or Murchison, the
> answer may be yes
> because *minute* amounts of Hg (= mercury) have been
> identified in
> them: Allende = 30 ? 1.5 ng/g and Murchison = 294 ?
> 15 ng/g. Well,
> just like iron + sulfur = FeS (troilite), Hg + S =
> HgS = cinnabar.
>
> References:
>
> LAURETTA D.S. et al. (2000) Inductively coupled
> plasma mass spectrometry
> measurements of bulk mercury abundances and isotopic
> ratios in Murchison
> - CM, and Allende - CV (MAPS 35-5, 2000, Suppl.,
> A095).
>
> RUBIN A.E. (1997) Mineralogy of meteorite groups
> (Meteoritics 32-2, 1997, 231-247).
>
> ULYANOV A.A. (1991) The meteorite minerals (Brown-
> Vernadsky Microsymp. Comp. Planet. 14th).
>
>
> Best regards,
>
> Bernd
>
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Received on Sat 28 Aug 2004 08:57:47 AM PDT