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* 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:

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Moderator: Ellery Frahm, [log in to unmask],
Electron Microprobe Lab, University of Minnesota

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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 Arkansas alkalic syenites
for over 20 years and would like to work on some of the accumulation of
unknowns that has built up. Unfortunately, here at Troy, my research
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
Troy University
Troy, Alabama
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