Bultfonteinite Formula: Ca2 Si F (O5 H3) Name: Bultfonteinite Unit cell: 10.992 8.185 5.671 93.95 91.32 89.85 , V=508.87 Space group: P-1 (2)
McIver E J , Acta Crystallographica , 16 (1963) p.551-558, The structure of bultfonteinite, Ca4Si2O10F2H6, Locality: Bultfontein mine, Kimberley, South Africa