@ARTICLE{Cegiełka_Małgorzata_Ba-Fe_2022, author={Cegiełka, Małgorzata and Bagiński, Bogusław and Macdonald, Ray and Marciniak-Maliszewska, Beata and Stachowicz, Marcin}, volume={vol. 72}, number={No 1}, journal={Acta Geologica Polonica}, pages={1-8}, howpublished={online}, year={2022}, publisher={Komitet Nauk Geologicznych PAN}, publisher={Wydział Geologii UW}, abstract={A peralkaline granite of the Ilímaussaq Complex, South Greenland, contains the rare mineral henrymeyerite [(Ba0.92Na0.05Ca0.03)1.0(Ti6.87Fe2+1.04Nb0.03)7.9O16], a low-Fe Ba titanate [(Ba0.74Ca0.02Na0.05)0.8 (Ti4.9oFe2+0.15 Nb0.04)5.1O11], and an unidentified Ba titanosilicate. Both titanates show the coupled substitution 2Na+ + Si4+ → Ba2+ + Ti4+. The minerals are present as tiny crystals fringing ilmenite inclusions in an amphibole crystal and are thought to have formed during the hydrothermal stage of the granite’s evolution.}, type={Article}, title={Ba-Fe titanates in peralkaline granite of the Ilímaussaq Complex, South Greenland}, URL={http://ochroma.man.poznan.pl/Content/122629/PDF-MASTER/1_Cegielka.pdf}, doi={10.24425/agp.2021.137709}, keywords={Ilímaussaq peralkaline granite, Henrymeyerite, Low-Fe Ba Titanate}, }