| Reference Type | Journal (article/letter/editorial) |
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| Title | The crystal structure of cesanite, Ca1+xNa4−x(SO4)3(OH)x · (1−x)H2O, a sulphate isotypic to apatite |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Tazzoli, V. | Author |
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| Year | 1983 (March) | Volume | 47 |
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| Page(s) | 59-63 | Issue | 342 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_47/47-342-59.pdf+ |
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| DOI | doi:10.1180/minmag.1983.047.342.10Search in ResearchGate |
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| Generate Citation Formats |
| Classification | Not set | LoC | Not set |
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| Mindat Ref. ID | 3472 | Long-form Identifier | mindat:1:5:3472:6 |
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| GUID | 0 |
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| Full Reference | Tazzoli, V. (1983) The crystal structure of cesanite, Ca1+xNa4−x(SO4)3(OH)x · (1−x)H2O, a sulphate isotypic to apatite. Mineralogical Magazine, 47 (342). 59-63 doi:10.1180/minmag.1983.047.342.10 |
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| Plain Text | Tazzoli, V. (1983) The crystal structure of cesanite, Ca1+xNa4−x(SO4)3(OH)x · (1−x)H2O, a sulphate isotypic to apatite. Mineralogical Magazine, 47 (342). 59-63 doi:10.1180/minmag.1983.047.342.10 |
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| In | (1983, March) Mineralogical Magazine Vol. 47 (342) Mineralogical Society |
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| Abstract/Notes | AbstractCesanite, Ca1+xNa4−x(SO4)3(OH)x · (1 − x) H2O, is hexagonal, space group P63/m, a = 9.446(1) and c = 6.895(1) Å, Z = 2. The crystal structure refinement, carried out by utilizing 457 independent reflections (final R = 0.021), shows that cesanite is isotypic to hydroxyapatite. The P atom of apatite is completely replaced in cesanite by an S atom; the two independent Ca sites of apatite are occupied respectively by Na and Na + Ca, the charge balance being by partial substitution of H2O for OH− although the occupancy of the (H2O,OH−) sites is not complete. The relationship between the water vacancies and the structural features of the (Ca,Na) polyhedron is discussed. A new general formula for the apatite-wilkeite-ellestadite series is proposed. |
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