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Tarney, J. (1969) Epitaxic relations between coexisting pyroxenes. Mineralogical Magazine, 37 (285) 115-122 doi:10.1180/minmag.1969.037.285.11

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Reference TypeJournal (article/letter/editorial)
TitleEpitaxic relations between coexisting pyroxenes
JournalMineralogical Magazine
AuthorsTarney, J.Author
Year1969 (March)Volume37
Issue285
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_37/37-285-115.pdf+
DOIdoi:10.1180/minmag.1969.037.285.11Search in ResearchGate
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Mindat Ref. ID6238Long-form Identifiermindat:1:5:6238:5
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Full ReferenceTarney, J. (1969) Epitaxic relations between coexisting pyroxenes. Mineralogical Magazine, 37 (285) 115-122 doi:10.1180/minmag.1969.037.285.11
Plain TextTarney, J. (1969) Epitaxic relations between coexisting pyroxenes. Mineralogical Magazine, 37 (285) 115-122 doi:10.1180/minmag.1969.037.285.11
In(1969, March) Mineralogical Magazine Vol. 37 (285) Mineralogical Society
Abstract/NotesSummaryMany examples of epitaxic relations between coexisting pyroxenes are found in the picritic dykes that cut the Lewisian gneisses of the Lochinver area, Sutherland. In some dykes augite forms oriented overgrowths on the (100) face of orthopyroxene; in others orthopyroxene forms similar overgrowths on augite. A number of unusual variants of the first case are described together with a complex ‘induced’ twinning found in the augite overgrowths. Analyses of the coexisting pyroxenes suggest that the overgrowth relation has been facilitated by increased solid solution between the pyroxenes, so reducing the crystallographic misfit along the c-axis. However, crystallization of the pyroxenes in an ordered sequence rather than simultaneously also seems to have been an important factor.


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