Montroseite Evans H T, Block S American Mineralogist 38 (1953) 1242-1250 The crystal structure of montroseite, a vanadium member of the diaspore group _database_code_amcsd 0000062 4.54 9.97 3.03 90 90 90 Pbnm atom x y z occ Biso Fe -.051 .145 .25 .125 0.4 V -.051 .145 .25 .875 0.4 OH1 .297 -.197 .25 0.4 O2 -.197 -.051 .25 0.4