Fe 2+ -F avoidance in silicates

Details Fe 2+ -F avoidance in silicates Fe 2+ -F avoidance in silicates

Feb 1977

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1977gecoa..41..345r&link_type=abstract

Geochimica et Cosmochimica Acta, vol. 41, Issue 2, pp.345-346

Physics

8

Scientific paper

Fe 2+ -F avoidance, reported in the literature in micas and amphiboles, can be accounted for by crystal field theory. The crystal field splitting parameter, O , of Fe 2+ octahedrally coordinated to F - is significantly smaller than its value when (OH) - is the coordinating anion. Thus, the presence of Fe 2+ is not favored at sites where F - substitutes for (OH) - due to smaller crystal field stabilization energy.

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