AM_Pyrochlore Formula: Na.37 K.02 Ca.73 Sr.07 Mn.04 Pb.01 La.01 Ce.03 Nd.01 U.02 (Nb1.72 Ta.02 Ti.16 Si.07 Fe.03) O6.38 F.62 H1.352 Name: Pyrochlore Unit cell: 10.42 10.42 10.42 90.0 90.0 90.0 , V=1131.37 Space group: FD-3M (227)

Bonazzi P , Bindi L , Zoppi M , Capitani G C , Olmi F , American Mineralogist , 91 (2006) p.794-801, Single-crystal diffraction and transmission electron microscopy studies, of silicified pyrochlore from Narssarssk, Julianehaab district, Greenland, Locality: Narssarssk, Julianehaab district, Greenland, Sample: 396a