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Embrey, P. G., Fejer, E. E. (1969) Tavistockite and bialite discredited. Mineralogical Magazine, 37 (285) 123-127 doi:10.1180/minmag.1969.037.285.12

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Reference TypeJournal (article/letter/editorial)
TitleTavistockite and bialite discredited
JournalMineralogical Magazine
AuthorsEmbrey, P. G.Author
Fejer, E. E.Author
Year1969 (March)Volume37
Issue285
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_37/37-285-123.pdf+
DOIdoi:10.1180/minmag.1969.037.285.12Search in ResearchGate
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Mindat Ref. ID6239Long-form Identifiermindat:1:5:6239:2
GUID0
Full ReferenceEmbrey, P. G., Fejer, E. E. (1969) Tavistockite and bialite discredited. Mineralogical Magazine, 37 (285) 123-127 doi:10.1180/minmag.1969.037.285.12
Plain TextEmbrey, P. G., Fejer, E. E. (1969) Tavistockite and bialite discredited. Mineralogical Magazine, 37 (285) 123-127 doi:10.1180/minmag.1969.037.285.12
In(1969, March) Mineralogical Magazine Vol. 37 (285) Mineralogical Society
Abstract/NotesSummarySpecimens of tavistockite fall into two groups: true tavistockite from the George and Charlotte mine, Tavistock, Devon, and wavellite from the Stenna Gwyn mine, St. Austell, Cornwall. Both were sold as tavistockite by the discoverer, Richard Talling.Tavistockite proper is a fluorapatite, as shown by optical and X-ray examination, and the alumina and water in the original analysis are certainly derived from kaolinite with which the apatite is intimately associated.The published optical properties attributed to tavistockite were determined by E. S. Larsen on Stenna Gwyn material, and are those of wavellite.Re-examination of a portion of Buttgenbach's type bialite, which he related to tavistockite on optical grounds, shows it to be wavellite.


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