Publication Type:Journal Article
Source:Canadian Mineralogist, Mineralogical Association of Canada, Volume 55, Number 3, p.515-516 (2017)
Keywords:Aluminum alloys, Manganese oxide
The chemical composition and chemical formula for ferro-ferri-nyboite given by Lussier et al. (2014) are wrong due to incorporation of errors during preparation of the paper. The data given in the original IMA submission are correct and are given here: SiO247.06, TiO20.50, Al2O33.16, Fe2O312.43, FeO 22.37, (Fetot=33.56), MnO 2.18, ZnO 0.06, MgO 0.23, CaO 1.03, Na2O 8.15, K2O 1.72, F 0.84, H2Ocalc1.50, O=F-0.35 sum 100.88 wt.%. The formula unit, calculated on the basis of 24 (O+OH+F) with (OH+F)=2 apfu, is (Na0.67K0.35)(Na1.83Ca0.17)(Mg0.05Fe2+2.96Mn0.29Zn0.01Al0.03Fe3+1.48Ti0.06)(Si7.44Al0.56)O22(OH1.58F0.42).
Compilation and indexing terms, Copyright 2018 Elsevier Inc.<br/>20172903963693<br/>Canada<br/>Chemical compositions<br/>Chemical formulae<br/>Mont Saint-Hilaire<br/>New amphiboles