AM_Eldfellite
Formula: Na.77 K.01 Fe.82 Mg.08 Al.03 Mn.01 Ti.02 S2 P.06 O8
Name: Eldfellite
Unit cell: 8.043 5.139 7.115 90.0 92.13 90.0 , V=293.88
Space group: C12/M1 (12)

Balic-Zunic T , Garavelli A , Acquafredda P , Leonardsen E , Jakobsson S P , Mineralogical Magazine , 73 (2009) p.51-57, Eldfellite, NaFe(SO4)2, a new fumarolic mineral from Eldfell volcano, Iceland, Locality: Eldfell volcano, Iceland