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Leelanandam, C. (1968) Zoned plagioclase from the charnockites of Kondapalli, Krishna district, Andhra Pradesh, India. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (282) 805-813 doi:10.1180/minmag.1968.036.282.07

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Reference TypeJournal (article/letter/editorial)
TitleZoned plagioclase from the charnockites of Kondapalli, Krishna district, Andhra Pradesh, India
JournalMineralogical Magazine and Journal of the Mineralogical Society
AuthorsLeelanandam, C.Author
Year1968 (June)Volume36
Issue282
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_36/36-282-805.pdf+
DOIdoi:10.1180/minmag.1968.036.282.07Search in ResearchGate
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Mindat Ref. ID6159Long-form Identifiermindat:1:5:6159:3
GUID0
Full ReferenceLeelanandam, C. (1968) Zoned plagioclase from the charnockites of Kondapalli, Krishna district, Andhra Pradesh, India. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (282) 805-813 doi:10.1180/minmag.1968.036.282.07
Plain TextLeelanandam, C. (1968) Zoned plagioclase from the charnockites of Kondapalli, Krishna district, Andhra Pradesh, India. Mineralogical Magazine and Journal of the Mineralogical Society, 36 (282) 805-813 doi:10.1180/minmag.1968.036.282.07
In(1966) Mineralogical Magazine Vol. 36 (282) Mineralogical Society
Abstract/NotesSummaryZoning in plagioclase is reported from the charnockitic rocks of Kondapalli, Krishna district, Andhra Pradesh, India, for the first time. Electronprobe studies indicate that the zoned plagioclases consist of homogeneous sodic cores mantled by thin calcic shells, which show continuous zoning of the inverse type. Partial chemical analyses of twelve density fractions of the zoned plagioclase from a basic charnockite exhibit a wide variation in An content from 54·80 to 72·39 %; X-ray studies suggest that they possess ‘fixed’ transitional structural state.


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