| Reference Type | Journal (article/letter/editorial) |
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| Title | Relationships among 2:1 layer silicates |
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| Journal | Mineralogical Magazine |
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| Authors | Whittaker, E. J. W. | Author |
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| Year | 1969 (June) | Volume | 37 |
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| Issue | 286 |
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| Publisher | Mineralogical Society |
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| Download URL | https://rruff.info/doclib/MinMag/Volume_37/37-286-206.pdf+ |
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| DOI | doi:10.1180/minmag.1969.037.286.07Search in ResearchGate |
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| Generate Citation Formats |
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| Mindat Ref. ID | 6256 | Long-form Identifier | mindat:1:5:6256:9 |
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| GUID | 0 |
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| Full Reference | Whittaker, E. J. W. (1969) Relationships among 2:1 layer silicates. Mineralogical Magazine, 37 (286) 206-209 doi:10.1180/minmag.1969.037.286.07 |
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| Plain Text | Whittaker, E. J. W. (1969) Relationships among 2:1 layer silicates. Mineralogical Magazine, 37 (286) 206-209 doi:10.1180/minmag.1969.037.286.07 |
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| In | (1969, June) Mineralogical Magazine Vol. 37 (286) Mineralogical Society |
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| Abstract/Notes | SummaryThe relationships between the 2:1 layer silicates are discussed in terms of the charge balance between the ions occupying X, Y, and Z sites. This brings out the relationship of glauconite to the illites, and clarifies the reason for the ideal occupancy of the Y sites in montmorillonite. It not only shows hectorite, saponite, and sauconite to be tri-octahedral smectites, but also shows vermiculite to be a tri-octahedral analogue of the illites. Apparently anomalous differences in permitted compositions of the di-octahedral and tri-octahedral micas are explained in terms of mismatch between the tetrahedral and octahedral layers, and it is shown that ephesite is to be regarded as a tri-octahedral common mica, not an analogue of margarite. Anandite is the nearest known naturally occurring equivalent to a tri-octahedral analogue of margarite, but the true analogue is a barium magnesium mica synthesized by Frondel and Ito. |
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