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Cann, J. R. (1967) A second occurrence of dalyite and the petrology of some ejected syenite blocks from São Miguel, Azores. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (278) 227-232 doi:10.1180/minmag.1967.036.278.05

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Reference TypeJournal (article/letter/editorial)
TitleA second occurrence of dalyite and the petrology of some ejected syenite blocks from São Miguel, Azores
JournalMineralogical Magazine and Journal of the Mineralogical Society
AuthorsCann, J. R.Author
Year1967 (June)Volume36
Issue278
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_36/36-278-227.pdf+
DOIdoi:10.1180/minmag.1967.036.278.05Search in ResearchGate
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Full ReferenceCann, J. R. (1967) A second occurrence of dalyite and the petrology of some ejected syenite blocks from São Miguel, Azores. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (278) 227-232 doi:10.1180/minmag.1967.036.278.05
Plain TextCann, J. R. (1967) A second occurrence of dalyite and the petrology of some ejected syenite blocks from São Miguel, Azores. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (278) 227-232 doi:10.1180/minmag.1967.036.278.05
In(1966) Mineralogical Magazine Vol. 36 (278) Mineralogical Society
Abstract/NotesDalyite, K2ZrSi6O15, occurs in the ejected syenite blocks of Serra de Agua de Pau (Lagoa do Fogo), São Miguel, Azores, in an assemblage sanidine-arfvedsonite-quartz-aegirine-fayalite-astrophyllite-dalyite-pyrrhite. Other blocks from the same locality contain biotite-zircon in place of astrophyllite-dalyite. A comparison made between the chemistry of one specimen of each type indicates that they may be related by paraeutectoid fractional crystallization.

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Água de Pau Volcano, São Miguel, Azores, Portugal

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Dalyite

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LocalityMineral(s)
Água de Pau Volcano, São Miguel, Azores, Portugal Arfvedsonite, Dalyite, Fayalite


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