Protoenstatite: a crystal-structure refinement at 1100°C

Joseph R. Smyth


Techniques allowing single-crystal investigations on the precession camera up to the melting point of platinum have been developed. The crystal structure of protoenstatite has been refined from three-dimensional intensity data obtained at 1100°C using a crystal of enstatite from the Norton County, Kansas meteorite. The space group is P21cn, a subgroup of the previously proposed Pbcn, and the cell dimensions are: a = 9.304(4), b = 8.902(4), c = 5.351(3) Å. The structure shows strong stacking disorder along the a axis, probably resulting from incomplete inversion from orthoenstatite.

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Zeitschrift für Kristallographie – Crystalline Materials offers a place for researchers to present results of their crystallographic studies. The journal includes theoretical as well as experimental research. It publishes Original Papers, Letters and Review Articles in manifold areas of crystallography.