Referenza:
▪ Cegielka, M., Bagiński, B., MacDonald, R., Marchiniak-Maliszewska, B., Stachowicz, M. (2022): Ba-Fe titanates in peralkaline granite of the Ilímaussaq Complex, South Greenland. Acta Geologica Polonica, 72, 1–8.
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+0.15Nb0.04)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.
Ba-Fe titanates in peralkaline granite of the Ilímaussaq Complex, South Greenland
- Marco E. Ciriotti
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Ba-Fe titanates in peralkaline granite of the Ilímaussaq Complex, South Greenland
Marco E. Ciriotti
«Things are interesting only in so far as they relate themselves to other things»
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