Dear colleagues,
here at Calgary we are interested in making trace-element X-ray maps of
accessory phases (eg zircon, monazite etc). Dave Pattison recently
tried this with the latest JEOL electron-probe in Japan, using an epoxy
mount for the grains, and found that, for high operating currents, the
epoxy around the grain being mapped was fairly quickly destroyed,
risking the grain being completed excavated from the mount. Some of the
JEOL technicians suggested mounting the grains in "carbon impregnated
bakelite", which apparently is much more thermally resilient than epoxy
and is also electrically and thermally conductive. I am wondering if
anyone has any experience with preparing "carbon impregnated bakelite",
with mounting grains in it, and/or any knowledge of its behaviour under
an electron beam. I know nothing about it. Any tips would be much
appreciated.
Cheers,
Geoff Fraser
Department of Geology and Geophysics
University of Calgary
Calgary, Alberta, T2N 1N4
Canada
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