| Reference Type | Journal (article/letter/editorial) |
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| Title | The role of titanium and the effect of TiO2 on the cell-size, refractive index, and specific gravity in the andradite-melanite-schorlomite series |
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| Journal | Mineralogical Magazine and Journal of the Mineralogical Society |
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| Authors | Howie, R. A. | Author |
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| Woolley, A. R. | Author |
| Year | 1968 (June) | Volume | 36 |
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| Issue | 282 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_36/36-282-775.pdf+ |
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| DOI | doi:10.1180/minmag.1968.036.282.04Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 6156 | Long-form Identifier | mindat:1:5:6156:2 |
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| GUID | 0 |
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| Full Reference | Howie, R. A., Woolley, A. R. (1968) The role of titanium and the effect of TiO2 on the cell-size, refractive index, and specific gravity in the andradite-melanite-schorlomite series. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (282) 775-790 doi:10.1180/minmag.1968.036.282.04 |
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| Plain Text | Howie, R. A., Woolley, A. R. (1968) The role of titanium and the effect of TiO2 on the cell-size, refractive index, and specific gravity in the andradite-melanite-schorlomite series. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (282) 775-790 doi:10.1180/minmag.1968.036.282.04 |
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| In | (1966) Mineralogical Magazine Vol. 36 (282) Mineralogical Society |
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| Abstract/Notes | SummaryNew chemical analyses, cell-sizes, and specific gravities are given for 12 garnets, and TiO2 values, cell-sizes, and refractive indices are presented for a further 33 garnets all belonging to the andradite-melanite-schorlomite series. The increase of refractive index, cell-size, and specific gravity with increasing titania is shown graphically. A plot of Ti against Si atoms in the unit cell suggests that Ti replaces Si rather than Fe3+ in the structure, while electron-probe results indicate that Si or (Si+Fe) may be replaced by Ti. The chemical and infra-red absorption data are considered in a discussion of the structural role of titanium in these garnets : both Ti4+ and Ti3+ may be present. |
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