Volborthite Lafontaine M A, LeBail A, Ferey G Journal of Solid State Chemistry 85 (1990) 220-227 Copper-containing minerals - I. Cu3V2O7(OH)2,2H2O: The synthetic homolog of volborthite; crystal structure determination from X-ray and neutron data; structural correlations Note: neutron data on a synthetic sample _database_code_amcsd 0013677 10.607 5.864 7.214 90 94.88 90 C2/m atom x y z Biso Cu1 0 0 0 1.02 Cu2 .25 .25 0 1.02 V .9959 .5 .2516 .55 O1 0 .5 .5 1.5 O2 .3428 .5 .1095 1.5 O3 .0756 .2635 .1864 1.5 O4 .1622 .5 .8381 1.5 Ow .3223 .5 .4894 1.5 H1 .3501 .5 .2376 5.7 H2 .3536 .3714 .5639 5.7