منابع مشابه
Aikali.feldspars from the Crowsnest Volcanics, Atberta
Alkali-feldspar occurs in the Crowsnest Volcanics as phenocrysts and as free euhedra in the pyroclastics and their re-worked derivatives. Composition varies from 6O/p to 95/6 Or-molecule and 2V f.rom 50'[-f (010)] to 35'[ll(010)l' Individual crystals show a range of 2Zvalues, but only rarely contain more than one K-rich phase. Optics indicate that most of the K-feldspar is intermediate between ...
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ژورنال
عنوان ژورنال: Rapport Grønlands Geologiske Undersøgelse
سال: 1981
ISSN: 2597-2944,0418-6559
DOI: 10.34194/rapggu.v106.7767