AM_Kapitsaite-(Y) Formula: Ba3.68 Pb.2 K.12 (Y Ca.66 Gd.08 Dy.08 Sm.06 Nd.06 Er.06) Si8.3 B3.7 O28 F Name: Kapitsaite-(Y) Unit cell: 11.181 10.85 10.252 90.64 90.05 89.97 , V=1243.63 Space group: I-1 (2)

Sokolova E V , Ferraris G , Ivaldi G , Pautov L A , Khvorov P V , Neues Jahrbuch fur Mineralogie, Monatshefte , 2000 (2000) p.74-84, Crystal structure of kapitsaite-(Y), a new borosilicate isotypic with, hyalotekite - Crystal chemistry of the related isomorphous series, Locality: Dara-i-Pioz glacier, Alaiskii mountain range, Tien-Shan,, Garmskii district, Northern Tajikistan