Fractionation of geochemical twins (Zr/Hf, Nb/Ta and Y/Ho) and HREE-enrichment during magmatic and metamorphic processes in peralkaline nepheline syenites from Norra Kärr (Sweden)
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DOI: 10.1016/j.lithos.2020.105667
Abstract: Abstract The 1.49 Ga Norra Karr complex (Sweden) consists of deformed and metamorphosed peralkaline nepheline syenites that contain eudialyte-group minerals as the major host of high field strength elements and rare earth elements. Earlier studies revealed… read more here.
Keywords: nepheline syenites; magmatic metamorphic; group; eudialyte group ... See more keywords