Boromuscovite Liang J, Hawthorne F C, Novak M, Cerny P The Canadian Mineralogist 33 (1995) 859-865 Crystal-structure refinement of boromuscovite polytypes using a coupled Rietveld-static-structure energy-minimization method Sample: 1M polytype Locality: Recice, Czech Republic _database_code_amcsd 0005446 5.102 8.788 10.076 90 101.23 90 C2/m atom x y z occ Biso Al 0 .666 0 .41 .62 SiT .437 .674 .272 .75 .12 BT .437 .674 .272 .25 .12 K .5 0 .5 .20 .26 OH .433 0 .100 .35 O1 .347 .715 .116 .37 O2 .192 .726 .33 .68 O3 .520 .5 .287 .38