Download Hydrogen extractions from silicate minerals by sodium

Geochemical Journal, Vol. 9, pp. 107 to 111, 1975
107
NOTE
Hydrogen extractions from silicate minerals by sodium carbonate
fusion and its application to deuterium analyses
of fluid inclusions in some olivines
TETSURO SUZUOKI1, YOSHIMASU KURODA2 and SADAO MATSUO3
Marine Department, Japan Meteorological Agency, Otemachi, Chiyoda-ku, Tokyo 100 Japan1,
Department of Geology, Shinshu University, Matsumoto, 390 Japan2 and Department of
Chemistry, Tokyo Institute of Technology, O-okayarna, Tokyo 152 Japan3
(Received May 26, 1975)
Abstract -Fluid inclusions in olivine were extracted in vacuum by a sodium carbonate fusion
method. In the present study, bulk hydrogen content and D/H ratio of the inclusion were
measured. The results showed that a consistent value of dD was obtained with a standard
deviation of ±2%o, when the absolute amount of hydrogen extracted was more than 40umol
(0.9ml STP H2). On the other hand, when the absolute amount of extracted hydrogen was
less than 40umol, dD value of the extract fluctuated, probably being affected by the contamination in the whole procedure.