A technique for preparing a polished thin section from a diamond-containing meteorite

Details A technique for preparing a polished thin section from a diamond-containing meteorite A technique for preparing a polished thin section from a diamond-containing meteorite

Dec 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977metic..12..397m&link_type=abstract

Meteoritics, vol. 12, Dec. 31, 1977, p. 397, 398.

Computer Science

Meteoritic Diamonds, Polishing, Surface Finishing, Graphite, Meteoritic Composition, Ureilites

Scientific paper

The paper describes a procedure for obtaining thin sections with a good polish although with some visible relief from the Kenna meteorite, a ureilite with a graphitic matrix dispersed with small diamond crystals up to about 20 microns in size. A slice about 50 microns thick was cut with a diamond blade from the meteorite fragment and then mounted on a one-inch glass round with epoxy which, by covering the surface of the slice, impregnated and consolidated it. After the epoxy had hardened, the first face was ground down to 40 microns with a metal-bonded diamond wheel. The second face was treated similarly, and the section thickness reduced to 35 microns. The section thickness is reduced slightly further on a cast iron lap with an aluminum oxide slurry. Brown wrapping paper charged with 3-micron diamond powder was used for initial polishing.

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