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Dear Eric,
Thanks. I had not noticed significant beam
damage in my apatites, but then I’m a (very) modest user of the probe. I
do usually try and use as large a spot size as possible. Some phosphates are
significantly degraded under the beam no matter how careful you are.
Henry
Henry Barwood
Associate Professor of Science, Earth
Sciences
Department of Math and Physics
MSCX 312G
From:
Sent: Wednesday, September 06,
2006 12:02 PM
To: [log in to unmask]
Subject: Re: [PROBE-USERS] Help
with probe analysis of minerals
Henry,
Microprobe analysis of
both the apatite- and bastnaesite-group phases is quite touchy. Beam damage,
degassing and elemental migration (potential F and Cl increase in apatite with time) are
significant problems for these minerals.
eric
On Sep 6, 2006, at 11:52 AM, Henry Barwood wrote:
JEOL Probe Users Listserver
Moderator: Ellery Frahm, [log in to unmask],
Electron Microprobe Lab,
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Perhaps someone on the list would be interested in collaborating with
me on
the analysis of some mineral specimens for publication. I have been
conducting studies of syenite minerals from the
for over 20 years and would like to work on some of the accumulation of
unknowns that has built up. Unfortunately, here at
capabilities are somewhat limited. If there is anyone who would like to
analyze some of the specimens as a co-author, please let me know. Some
of
the partially completed studies that I have waiting include:
Analysis of brithiolite and silician fluorapatites
Mosandrite analysis
Examination of the eudialites from Magnet Cove and Jones Mills
Reexamination of the rare-earth fluorocarbonates from several locations
Thanks.
Henry Barwood
Associate Professor of Science, Earth Sciences
Department of Math and Physics
MSCX 312G