| Reference Type | Journal (article/letter/editorial) |
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| Title | The structure of antimonian dussertite and the role of antimony in oxysalt
minerals |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Kolitsch, U. | Author |
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| Slade, P. G. | Author |
| Tiekink, E. R. T. | Author |
| Pring, A. | Author |
| Year | 1999 (February) | Volume | 63 |
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| Page(s) | 17-26 | Issue | 1 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_63/63-1-17.pdf+ |
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| DOI | doi:10.1180/002646199548277Search in ResearchGate |
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| Mindat Ref. ID | 1256 | Long-form Identifier | mindat:1:5:1256:4 |
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| GUID | cc7d167b-1fb0-4985-b36c-4fc3a2e3f848 |
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| Full Reference | Kolitsch, U., Slade, P. G., Tiekink, E. R. T., Pring, A. (1999) The structure of antimonian dussertite and the role of antimony in oxysalt
minerals. Mineralogical Magazine, 63 (1) 17-26 doi:10.1180/002646199548277 |
|---|
| Plain Text | Kolitsch, U., Slade, P. G., Tiekink, E. R. T., Pring, A. (1999) The structure of antimonian dussertite and the role of antimony in oxysalt
minerals. Mineralogical Magazine, 63 (1) 17-26 doi:10.1180/002646199548277 |
|---|
| Abstract/Notes | AbstractThe structure of antimonian dussertite, (AsO4)2(OH,H2O)6, has been refined in space group R3̄m with a 7.410(3), c 17.484(4) Å, Z = 3, to R = 3.2 % and Rw = 3.7 % using 377 observed reflections with I ≥ 3 σ(I). The structure is of the alunite-type and consists of sheets of corner-sharing (Fe3+,Sb5+)O6 octahedra parallel to (0001). The substitution of Sb5+ for Fe3+, and not for As5+, is unambiguously demonstrated not only by the structure refinement but also by electron microprobe analyses and crystal-chemical considerations. The icosahedrally coordinated Ba cations occupy cavities between pairs of octahedral sheets and are surrounded by six O atoms from the AsO4 tetrahedra and six O atoms from the (Fe3+,Sb5+)O6 octahedra. The mean bond lengths for the various coordination polyhedra are As-O 1.684(3) Å, (Fe,Sb)-O 2.004(1) Å, and Ba-O 2.872(2) Å. A hydrogen-bonding network is modelled using bond-valence calculations. The dussertite sample investigated is the first member of the crandallite group found to contain substantial Sb. |
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