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A review of hexaferrum based on new mineralogical data

Published online by Cambridge University Press:  12 April 2018

Louis J. Cabri  and
Thomas Aiglsperger
Louis J. Cabri*
Affiliation:
Cabri Consulting Inc., Ottawa, Canada
Thomas Aiglsperger
Affiliation:
Department of Civil Engineering and Natural Resources, Luleå University of Technology, Sweden
*
*E-mail: [email protected]
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Abstract

Hexaferrum, defined as an hcp Fe mineral containing varying amounts of Ru, Os, or Ir (Mochalov et al. 1998) was re-examined in the light of new analyses of similar alloys from the Loma Peguera and Loma Larga chromitites, in the central part of Loma Caribe peridotite, Cordillera Central of the Dominican Republic, together with a review of the phase chemistry in the Fe–Ni–Ir and Fe–Ru–Ir systems. We conclude that the hcp (Fe,Ir) mineral corresponds to the ε-phase of Raub et al. (1964) and should be differentiated from hexaferrum [(Fe,Os) and (Fe,Ru)] because it is separated by one to two miscibility gaps and therefore is not a continuous solid solution with Fe.

Keywords

hexaferrumnomenclatureFe–Ni–Ir and Fe–Ru–Ir ternary systems
Type
Article
Information
Mineralogical Magazine , Volume 82 , Special Issue 3: Special Issue dedicated to the work and memory of Professor Hazel M. Prichard (1954–2017) , June 2018 , pp. 531 - 538
Copyright
Copyright © Mineralogical Society of Great Britain and Ireland 2018 

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Footnotes

Associate Editor: Brian O'Driscoll

This paper is published as part of a thematic set in memory of Professor Hazel M. Prichard

References

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