The Ratio between Uranium and Radium in Minerals

Details The Ratio between Uranium and Radium in Minerals The Ratio between Uranium and Radium in Minerals

Aug 1910

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1910natur..84..238r&link_type=abstract

Nature, Volume 84, Issue 2130, pp. 238-239 (1910).

Computer Science

Scientific paper

DR. BOLTWOOD established the constancy of this ratio for all the minerals he examined (Phil. Mag., April, 1905). He examined, however, no mineral in which uranium was present as phosphate, nor did he examine the then newly discovered mineral thorianite. Later, Mdlle. Gleditsch (Comptes rendus, cxlviii., 1451; cxlix., 267) found that the ratio radium to uranium was about 18 per cent. greater in thorianite than in Joachimsthal pitchblende, while in autunite, a phosphate of uranium, this ratio was about 20 per cent. less. She separated the radium chemically before estimating it.

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