Lunar Troilite: Crystallography

@article{Evans1970LunarTC,
  title={Lunar Troilite: Crystallography},
  author={H. T. Jun. Evans},
  journal={Science},
  year={1970},
  volume={167},
  pages={621 - 623}
}
Fine, euhedral crystals of troilite from lunar sample 10050 show a hexagonal habit consistent with the high-temperature NiAs-type structure. Complete three-dimensional counter intensity data have been measured and used to confirm and refine Bertaut's proposed low-temperature crystal structure. 

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...

References

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Über die Eisen (II)-Sulfidmischkristalle

Es wird das Mischkristallgebiet zwischen FeS und Schwefel (Troilit-Pyrrhotinphase) eingehend untersucht. Zwischen 50,O und 51,O Atom-% Schwefel erstreckt sich ein Uberstrukturgebiet; die Uberstruktur

Least squares analysis, bond lengths, and errors were calculated with a computer program written by Dr

    This table may be obtained uipon request from the author (H.T.E.)

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