Lithium tracer-diffusion in an alkali-basaltic melt - An ion-microprobe determination

Details Lithium tracer-diffusion in an alkali-basaltic melt - An ion-microprobe determination Lithium tracer-diffusion in an alkali-basaltic melt - An ion-microprobe determination

Mar 1981

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1981e%26psl..53...36l&link_type=abstract

Earth and Planetary Science Letters, Volume 53, Issue 1, p. 36-40.

Mathematics

Logic

8

Scientific paper

An ion-microprobe-based technique has been used to measure lithium tracer-diffusion coefficients (DLi) in an alkali-basaltic melt at 1300, 1350 and 1400°C. The results can be expressed in the form: DLi=7.5 ×10-2exp(-27,600/RT)cm2S-1
The results show significantly faster diffusion rates than those previously recorded for other monovalent, divalent and trivalent cations in a tholeiitic melt. Consequently, diffusive transport of ions acting over a given time in a basaltic melt can produce a wider range of transport distance values than hitherto supposed. Hence, it is concluded that great care should be exercised when applying diffusion data to petrological problems.

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