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Activation volume of silicon diffusion in San Carlos olivine
Author(s) -
Béjina F.,
Raterron P.,
Zhang J.,
Jaoul O.,
Liebermann R. C.
Publication year - 1997
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/97gl02735
Subject(s) - olivine , silicon , diffusion , volume (thermodynamics) , mineralogy , materials science , tracer , geology , analytical chemistry (journal) , thermodynamics , chemistry , physics , metallurgy , nuclear physics , chromatography
The activation volume of silicon diffusion (V si ) in olivine is reported for the first time. Specimens of San Carlos olivine single crystal were annealed at 1763 K and at pressures to 9 GPa in an uniaxial split‐sphere apparatus. 30 Si was used as tracer and the diffusion profiles were analyzed using the resonant nuclear reaction 30 Si(p,γ). We obtain V si = (−1.9 ± 2.4)×10 −6 m³/mol with a more probable value close to zero.