| Reference Type | Journal (article/letter/editorial) |
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| Title | Rotated and extended model structures in amphiboles and pyroxenes |
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| Journal | Mineralogical Magazine | ISSN | 0026-461X |
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| Authors | Law, A. D. | Author |
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| Whittaker, E. J. W. | Author |
| Year | 1980 (March) | Volume | 43 |
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| Issue | 329 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_43/43-329-565.pdf+ |
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| DOI | doi:10.1180/minmag.1980.043.329.01Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 3095 | Long-form Identifier | mindat:1:5:3095:7 |
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| GUID | 0 |
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| Full Reference | Law, A. D., Whittaker, E. J. W. (1980) Rotated and extended model structures in amphiboles and pyroxenes. Mineralogical Magazine, 43 (329) 565-574 doi:10.1180/minmag.1980.043.329.01 |
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| Plain Text | Law, A. D., Whittaker, E. J. W. (1980) Rotated and extended model structures in amphiboles and pyroxenes. Mineralogical Magazine, 43 (329) 565-574 doi:10.1180/minmag.1980.043.329.01 |
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| In | (1980, March) Mineralogical Magazine Vol. 43 (329) Mineralogical Society |
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| Abstract/Notes | SummaryThe model for the amphibole and pyroxene structures based on close-packed oxygen layers introduced by Thompson is investigated systematically. It is shown that different features of it can best be understood in terms of three different symbolisms: the O and S rotations of tetrahedra; the A,B, C stacking notation for close-packed layers; and the c, h notation for the relationship of close-packed layers to their neighbours. The possible stacking arrangements and their space-groups are derived systematically. Relationships between the close-packed, fully rotated, model and the extended chain model are discussed, and some important drawbacks in the former model are pointed out, especially in connection with real amphibole structures. |
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