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Bonding in eight ordered clinopyroxenes isostructural with diopside

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Abstract

Bond distances and angles in isostructural, ordered clinopyroxenes are compared for eight compositions, based on five new and three published crystal-structure refinements from X-ray diffraction data. Unit-cell parameters and configuration of the silicate chains are directly correlated with cation composition and distribution in the M2 and M1 sites.

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References

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Authors and Affiliations

  1. U. S. Geological Survey, 20242, Washington, D. C.

    Joan R. Clark, Daniel E. Appleman & J. J. Papike

Authors
  1. Joan R. Clark
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  2. Daniel E. Appleman
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  3. J. J. Papike
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Additional information

Publication authorized by the Director, U. S. Geological Survey.

Our thanks go to D. B. Stewart, C. Milton, and C. S. Ross, U. S. Geological Survey, who supplied crystals of the minerals, to D. B. Stewart for synthesis of iron spodumene, to Dr. L. Fuchs, Argonne National Laboratory, for synthesis of ureyite, and to Dr. B. Mason, U. S. National Museum, who transmitted the ureyite crystals.

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Clark, J.R., Appleman, D.E. & Papike, J.J. Bonding in eight ordered clinopyroxenes isostructural with diopside. Contr. Mineral. and Petrol. 20, 81–85 (1968). https://doi.org/10.1007/BF00371067

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  • DOI: https://doi.org/10.1007/BF00371067

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