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MacGregor, A. G. (1931) Clouded felspars and thermal metamorphism. Mineralogical Magazine and Journal of the Mineralogical Society, 22 (133) 524-538 doi:10.1180/minmag.1931.022.133.05

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Reference TypeJournal (article/letter/editorial)
TitleClouded felspars and thermal metamorphism
JournalMineralogical Magazine and Journal of the Mineralogical Society
AuthorsMacGregor, A. G.Author
Year1931 (June)Volume22
Page(s)524-538Issue133
PublisherMineralogical Society
Download URLhttps://rruff.info/doclib/MinMag/Volume_22/22-133-524.pdf+
DOIdoi:10.1180/minmag.1931.022.133.05
Mindat Ref. ID7120Long-form Identifiermindat:1:5:7120:2
GUIDc3af7446-c2f0-478d-b0db-c164505cb5fb
Full ReferenceMacGregor, A. G. (1931) Clouded felspars and thermal metamorphism. Mineralogical Magazine and Journal of the Mineralogical Society, 22 (133) 524-538 doi:10.1180/minmag.1931.022.133.05
Plain TextMacGregor, A. G. (1931) Clouded felspars and thermal metamorphism. Mineralogical Magazine and Journal of the Mineralogical Society, 22 (133) 524-538 doi:10.1180/minmag.1931.022.133.05
In(1929) Mineralogical Magazine Vol. 22 (133) Mineralogical Society
Abstract/NotesThe present paper summarizes the facts at present known regarding a characteristic effect that is often produced in the fresh plagioclase felspars of igneous rocks by thermal metamorphism—namely the development of a special type of cloudiness caused by the appearance of minute inclusions. Reference is also made to certain wel|-known rocks in which the clouding of plagioclase felspars has been described without any suggestion that the peculiarity of the felspars is connected with thermal metamorphism.


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