The crystal structure of gersdorffite (III), a distorted and disordered pyrite structure
1968 ◽
Vol 36
(283)
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pp. 940-947
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Keyword(s):
X Ray
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SummaryThe crystal structure of gersdorffite (III) has been examined with three-dimensional Weissenberg X-ray diffraction data. The unit cell is isometric with a 5·6849 ± 0·0003 Å, space group PI, and four formula units per cell. This structure has the sulphur and arsenic atoms equally distributed over the non-metal atom sites of pyrite. All atoms show significant random displacements from the ideal pyrite positions to produce triclinic symmetry, which serves to distinguish this mineral from a disordered cubic gersdorffite (II) and a partially ordered cubic gersdorffite (I). Factors responsible for the atomic distortions are discussed.
1965 ◽
Vol 122
(1-6)
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pp. 60-72
Keyword(s):
1973 ◽
Vol 28
(7-8)
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pp. 426-428
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Keyword(s):
Keyword(s):