| Reference Type | Journal (article/letter/editorial) |
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| Title | Staringite, a new Sn–Ta mineral from north-eastern Brazil |
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| Journal | Mineralogical Magazine |
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| Authors | Burke, E. A. J. | Author |
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| Kieft, C. | Author |
| Felius, R. O. | Author |
| Adusumilli, Maria S. | Author |
| Year | 1969 (December) | Volume | 37 |
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| Issue | 288 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_37/37-288-447.pdf+ |
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| DOI | doi:10.1180/minmag.1969.037.288.03Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 6316 | Long-form Identifier | mindat:1:5:6316:0 |
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| GUID | 0 |
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| Full Reference | Burke, E. A. J., Kieft, C., Felius, R. O., Adusumilli, Maria S. (1969) Staringite, a new Sn–Ta mineral from north-eastern Brazil. Mineralogical Magazine, 37 (288) 447-452 doi:10.1180/minmag.1969.037.288.03 |
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| Plain Text | Burke, E. A. J., Kieft, C., Felius, R. O., Adusumilli, Maria S. (1969) Staringite, a new Sn–Ta mineral from north-eastern Brazil. Mineralogical Magazine, 37 (288) 447-452 doi:10.1180/minmag.1969.037.288.03 |
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| In | (1969, December) Mineralogical Magazine Vol. 37 (288) Mineralogical Society |
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| Abstract/Notes | SummaryStaringite, (Fe,Mn)0·5(Sn,Ti)4·5(Ta,Nb)1·0O12, occurs as inclusions in tapiolite from pegmatites at Seridózinho and Pedra Lavreda, Paraiba State, NE. Brazil. An indexed powder pattern is presented. The mineral is tetragonal with a 4·742 Å and c 9·535 Å, and most probably has a ‘trirutile’ structure. Electron-microprobe analysis yielded Ta2O5 21·5%, Nb2O5 1·8, SnO2 73·3, TiO2 0·03, FeO 3·7, MnO 0·3, sum 100·6%. Dcalc 7·17. Micro-indentation hardness (load 100 g) 1033–1187 kg/mm2; reflectivity at 470 nm (R0) 12·8 to (R′e) 14·5%, at 546 nm 12·1–13·9, at 589 nm 12·0–13·7, and at 650 nm 11·8–13·6; staringite is uniaxial positive. |
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