A study of wet chemistry determinations of iron cations in biotite

Message:
Abstract:
Content of iron cations in three biotite specimens of true trioctahedral mica were determined by Mössbauer spectroscopy, electron microprobe and wet-chemistry methods. International certified reference materials were analyzed simultaneously with micas to evaluate the accuracy of the wet-chemistry method. High precision Mössbauer spectroscopic Fe3+/Fe2+ ratios coupled with the electron microprobe iron determinations were compared with the wet-chemical data. Comparisons of data show that in wet-chemistry method powdered micas dissolve more readily during acid attack than the granular micas and thus yield higher precision and accuracy.
Keywords:

biotite , iron cations , Mössbauer spectroscopy , electron microprobe , wet-chemistry , precision , accuracy

Language:
Persian
Published:
Iranian Journal of Crystallography and Mineralogy, Volume:19 Issue: 4, 2012
Page:
715
https://magiran.com/p990117