| Reference Type | Journal (article/letter/editorial) |
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| Title | Ba-rich celestine: new data and crystal structure refinement |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Brigatti, M. F. | Author |
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| Galli, E. | Author |
| Medici, L. | Author |
| Year | 1997 (June) | Volume | 61 |
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| Issue | 406 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_61/61-406-447.pdf+ |
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| DOI | doi:10.1180/minmag.1997.061.406.10Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 183 | Long-form Identifier | mindat:1:5:183:6 |
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| GUID | 0 |
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| Full Reference | Brigatti, M. F., Galli, E., Medici, L. (1997) Ba-rich celestine: new data and crystal structure refinement. Mineralogical Magazine, 61 (406) 447-451 doi:10.1180/minmag.1997.061.406.10 |
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| Plain Text | Brigatti, M. F., Galli, E., Medici, L. (1997) Ba-rich celestine: new data and crystal structure refinement. Mineralogical Magazine, 61 (406) 447-451 doi:10.1180/minmag.1997.061.406.10 |
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| In | (1997, June) Mineralogical Magazine Vol. 61 (406) Mineralogical Society |
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| Abstract/Notes | AbstractA Ba-rich celestine (Sr0.87Ba0.13SO4) filling cavities of volcanoclastic rocks from Montecchio Maggiore (Vicenza, Italy) was studied. The role of the Ba content in the mineral was determined using X-ray powder data, single crystal X-ray refinement, thermal and chemical analyses. The unit cell parameters (obtained by single crystal diffraction) are a = 8.408, b = 5.372, c = 6.897 Ã…, and the refinement in the space group Pnma (Z = 4) gives the final R value of 0.039. The average (Sr,Ba)-oxygen bond length is 2.842 Ã… and agrees with an occupancy of Sr 87% and Ba 13%. Individual bond lengths (Sr,Ba)-O and bond strength calculations confirm that all twelve interactions are significant and define an irregular array around the cation. |
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