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

Reference Type | Journal (article/letter/editorial) | ||
---|---|---|---|
Title | Zoned plagioclase from the charnockites of Kondapalli, Krishna district, Andhra Pradesh, India | ||
Journal | Mineralogical Magazine and Journal of the Mineralogical Society | ||
Authors | Leelanandam, C. | Author | |
Year | 1968 (June) | Volume | 36 |
Issue | 282 | ||
Publisher | Mineralogical Society | ||
Download URL | https://rruff.info/doclib/MinMag/Volume_36/36-282-805.pdf+ | ||
DOI | doi:10.1180/minmag.1968.036.282.07Search in ResearchGate | ||
Generate Citation Formats | |||
Mindat Ref. ID | 6159 | Long-form Identifier | mindat:1:5:6159:3 |
GUID | 0 | ||
Full Reference | 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 | ||
Plain Text | 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 | ||
In | (1966) Mineralogical Magazine Vol. 36 (282) Mineralogical Society | ||
Abstract/Notes | SummaryZoning 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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