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An ultrasonic probe for the extraction of microscopic quantities of minerals for X-ray work

Published online by Cambridge University Press:  05 July 2018

Veselin Kovachev  and
Strashimir Strashimirov
Veselin Kovachev
Affiliation:
University of Mining and Geology “St. Ivan Rilski”, Sofia 1100, Bulgaria
Strashimir Strashimirov
Affiliation:
University of Mining and Geology “St. Ivan Rilski”, Sofia 1100, Bulgaria
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Abstract

The instrumentation and procedure is described for the extraction of very small and pure samples from polished mounts and thin sections of minerals, for X-ray analysis and other micro-analytical techniques. It uses a stand-mounted, tunable ultrasonic probe (400 W/15–50 kHz) inclined at 45°C to a microscope stage. The tip of the probe, usually a steel needle, is located on the desired mineral and an appropriate ultrasonic frequency is selected. Very fine powders are produced from grains as small as 0.01–0.005 mm. A distinct advantage of this technique is that, as different minerals powder at different rates and different frequencies, it is possible to separate a single mineral from an intergrowth of two or more minerals.

Keywords

K-ray analysisDebye Scherrerultrasonic probemineral separation
Type
Mineralogy
Information
Mineralogical Magazine , Volume 60 , Issue 402 , October 1996 , pp. 829 - 831
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1996

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References

Berkovich, E.C. and Kuritzina, A.D. (1949) A device for extracting prpbes from metals for microchemical analysis. Zavodskaia laboratoria, 7 685—7 (in Russian).Google Scholar
Gcnkin, A.D. and Korolev, N.V. (1961) Methcxls for determination of small mineral grains in ores Geologic rudnih mestorojdenii, 5, 64–80.(in Russian).Google Scholar
Hcimstra, S. (1956) An easy method to obtain X-ray diW.raction patterns of small amounts of mineral. Amer. Mineral., 41, 519–21.Google Scholar
Jushko, S.A., Jushko-Zaharova, O.E., Lebedeva, S.I. and Maximuk, I.E. (1975) Diagnostic properties of ore minerals. M. Nedra, 238 pp. (in Russian).Google Scholar
Kovachev, V. and Strashimirov, S. (1979) A new method and device for obtaining samples for X-ray analysis. Isvestia visshih uchebnih zavedenii Geologia i razvedka, 7, 142–3.(in Russian).Google Scholar
Lebedeva, S.I., Mcituv, G.M. and Aleksandrova, R.A. (1965) A method for extracting microprobes from polished section. In Mineral microinclusionsM. Nedra, 58—65 (in Russian).Google Scholar