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On a systematic error in the X-ray determination of octahedral Fe and Mg in biotites

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Abstract

A systematic error in the determination of the Fe, Mg contents of biotites by X-ray intensity measurements of the 001 reflections by the Franzini and Schiaffino-method is investigated. It was found that the results are strongly influenced by the number of vacancises within the octahedral layer, and in the interlayer of the investigated biotites.

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Authors and Affiliations

  1. Mineralogisch-Petrographisches Institut der Universität Kiel, Olshausenstr. 40/60, 2300, Kiel, W-Germany

    P. K. Hörmann & G. Morteani

Authors
  1. P. K. Hörmann
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  2. G. Morteani
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The authors would like to thank Prof. F. Liebau and Prof. F. Karl for their help and keen interest they have taken in this work.

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Hörmann, P.K., Morteani, G. On a systematic error in the X-ray determination of octahedral Fe and Mg in biotites. Contr. Mineral. and Petrol. 22, 368–374 (1969). https://doi.org/10.1007/BF00400131

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  • DOI: https://doi.org/10.1007/BF00400131

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