Ed,
we got some Cr data (ICP-MS by J. Parks, VT, USA) from filter bubbler trains
exposed to fumarolic environments (vent and proximal). We also got data
from a passive experiment collecting invisible vapors emanating from soils
at the base of a volcano. The snow of Mt. Etna contains traces of Cr. The
highest values are in the range of 1-4 ppb. These data are unpublished.
I studied aerosol particles from the passively degassing plume of
Popocatepetl v. by FESEM/EDS. Cr is rare but present. An aerosol particle
collection by helicopter over the county of Salzburg/Austria also revealed
Cr-bearing (industrial?) particles. These results are published in VOLCANIC
DEGASSING, Pyle, Barclay, Oppenheimer (eds.), Geol. Soc., SP 213, 2003.
You might like to read also GEOCHEMISTRY OF NON-TRADITIONAL STABLE ISOTOPES;
REVIEWS IN MINERALOGY & GEOCHEMISTRY, Vol. 55, Johnson, Beard, Albarede
(eds.), 2004. This volume includes a chapter on Cr.
If somebody in this group knows publications or grey zone data concerning Cr
mobility in the volcanic environment, I would be grateful to receive more
information.
Thank you and best wishes
Johannes H. Obenholzner
NHM/Volcanology
Austria
----- Original Message -----
From: "Edward Grew" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Monday, January 22, 2007 8:27 PM
Subject: [A1 Organizer Spam Detection] Chromium mobility?
> Chromium is normally considered immobile in metamorphic environments. Has
> Cr mobility
> been reported in either natural or experimental systems?
>
> Thanks!
>
> Ed
>
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