Lamprophyllite Saf'yanov Y N, Vasil'eva N O, Golovachev V P, Kuz'min E A, Belov N V Soviet Physics Doklady 28 (1983) 207-209 The crystal structure of lamprophyllite Locality: Kola Peninsula, Russia _database_code_amcsd 0015612 19.431 7.086 5.392 90 96.75 90 C2/m atom x y z occ Biso NaM2 0 0 0 .5 1.22 CaM2 0 0 0 .5 1.22 NaM3 0 .2591 .5 .25 1.24 MnM3 0 .2591 .5 .25 1.24 CaM3 0 .2591 .5 .25 1.24 FeM3 0 .2591 .5 .25 1.24 TiM4 0 .5 0 .5 1.11 FeM4 0 .5 0 .5 1.11 SrM1 .2841 0 .2629 1/3 .85 BaM1 .2841 0 .2629 1/3 .85 KM1 .2841 0 .2629 1/3 .85 Ti .1493 0 .7069 .03 Si .1425 .2839 .2045 .05 O1 .0597 .295 .172 .34 O2 .1739 .189 .467 .41 O3 .1741 .187 .971 .63 O4 .1749 .5 .217 .35 O5 .0621 0 .665 .94 O6 .4433 0 .273 1/3 .86 OH6 .4433 0 .273 1/3 .86 F6 .4433 0 .273 1/3 .86