Natrite Arakcheeva A, Bindi L, Pattison P, Meisser N, Chapuis G, Pekov I American Mineralogist 95 (2010) 574-581 The incommensurately modulated structures of natural natrite at 120 and 293 K from synchrotron X-ray data Locality: Mt. Koashva, Khibiny massif, Kola peninsula, Russia T = 293 K _database_code_amcsd 0005043 8.851 5.24 6.021 90 101.08 90 C2/m atom x y z occ Uiso Na1 0 0 0 .977 .0191 Na2 0 0 .5 .987 .0197 Na3 .17036 .5 .74816 .977 .0271 C .16441 .5 .2492 .0145 O1 .10178 .29423 .28557 .0310 O2 .28986 .5 .1776 .0271