| Reference Type | Journal (article/letter/editorial) |
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| Title | Hidden story of tapiolite |
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| Journal | Mineralogical Magazine |
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| Authors | Ercit, T. S. | Author |
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| Year | 2010 (August) | Volume | 74 |
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| Issue | 4 |
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| Publisher | Mineralogical Society |
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| DOI | doi:10.1180/minmag.2010.074.4.715Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 244098 | Long-form Identifier | mindat:1:5:244098:3 |
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| GUID | 0 |
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| Full Reference | Ercit, T. S. (2010) Hidden story of tapiolite. Mineralogical Magazine, 74 (4) 715-730 doi:10.1180/minmag.2010.074.4.715 |
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| Plain Text | Ercit, T. S. (2010) Hidden story of tapiolite. Mineralogical Magazine, 74 (4) 715-730 doi:10.1180/minmag.2010.074.4.715 |
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| Abstract/Notes | AbstractThe crystal chemistry of tapiolite is more complicated than previously recognized. Perusal and synthesis of relatively recent publications reveals a ‘hidden’ story about tapiolite, one that: (1) permits quantification of the effects of Mn, Fe3+, Ti (and Sn) upon the unit-cell parameters of maximally ordered tapiolite; (2) shows that the effect of Nb = Ta substitution upon unit-cell parameters is insignificant; (3) casts doubt on the usefulness of heating experiments for accurately evaluating cation order in tapiolite; (4) suggests that rutile exsolves from tapiolite upon heating in air at lower temperatures than previously established; (5) shows that the maximum solubility of TiO2 in FeTa2O6 tapiolite during the later stages of crystallization of granitic pegmatites is ∼1 mol.%; (6) shows that the heating paths for at least some natural tapiolite samples are not necessarily linear, consisting of two sequential steps; (7) sheds doubt on the usefulness of unit-cell parameters as quantitative measures of long-range cation order, Q, in tapiolite; but (8) does show that the intensity ratio I011/I110 can provide an accurate and reasonably precise measure of cation order in tapiolite. |
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