AM_Hyalotekite Formula: Pb1.162 Ba2.838 Ca2 Si9.62 Be.38 B2 O28 F Name: Hyalotekite Unit cell: 11.31 10.955 10.317 90.43 90.02 90.16 , V=1278.25 Space group: I-1 (2)

Moore P B , Araki T , Ghose S , American Mineralogist , 67 (1982) p.1012-1020, Hyalotekite, a complex lead borosilicate: Its crystal structure and the, lone-pair effect of Pb(II)