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Hallimond, A. F. (1927) On the chemical classification of the mica group. III. The molecular volumes. Mineralogical Magazine and Journal of the Mineralogical Society, 21 (116) 195-204 doi:10.1180/minmag.1927.021.116.02

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Reference TypeJournal (article/letter/editorial)
TitleOn the chemical classification of the mica group. III. The molecular volumes
JournalMineralogical Magazine and Journal of the Mineralogical Society
AuthorsHallimond, A. F.Author
Year1927 (March)Volume21
Issue116
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_21/21-116-195.pdf+
DOIdoi:10.1180/minmag.1927.021.116.02
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Mindat Ref. ID7033Long-form Identifiermindat:1:5:7033:5
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Full ReferenceHallimond, A. F. (1927) On the chemical classification of the mica group. III. The molecular volumes. Mineralogical Magazine and Journal of the Mineralogical Society, 21 (116) 195-204 doi:10.1180/minmag.1927.021.116.02
Plain TextHallimond, A. F. (1927) On the chemical classification of the mica group. III. The molecular volumes. Mineralogical Magazine and Journal of the Mineralogical Society, 21 (116) 195-204 doi:10.1180/minmag.1927.021.116.02
In(1926) Mineralogical Magazine Vol. 21 (116) Mineralogical Society
Abstract/NotesIt is unfortunate that so many published analyses of mica are not accompanied by the physical data for the material used. Nevertheless, enough information is available to permit a general comparison of the density relations for the group. This is most conveniently made in terms of the specific volume, for, in most isomorphous series, the volume is an additive property eveu when the molecular volumes of the endminerals differ appreciably. Such a relationship will be shown to hold good approximately for the micas; the volume can be calculated from constants assigned to the constituent oxides, the difference from the observed value being rarely more than 2 per cent.

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