Humboldtine Echigo T, Kimata M Physics and Chemistry of Minerals 35 (2008) 467-475 Single-crystal X-ray diffraction and spectroscopic studies on humboldtine and lindbergite: weak Jahn-Teller effect of Fe2+ ion Locality: synthetic _database_code_amcsd 0019940 12.011 5.557 9.920 90 128.53 90 C2/c atom x y z Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Fe 0 .1704 .25 1.44 .0248 .0097 .0162 0 .0107 0 C .0499 .6684 .3511 1.27 .0255 .0153 .0133 .0018 .0078 .0013 O1 .0848 .4694 .4227 1.66 .0330 .0126 .0148 -.0010 .0111 -.0018 O2 .0863 .8716 .4236 1.80 .0272 .0336 .0183 .0050 .0126 .0036 O3 .1797 .1777 .2573 2.17 .0172 .0152 .0137 -.0001 .0086 -.0003 H1 .263 .091 .349 8.2 H2 .167 .130 .156 3.5