K(H2O)Fe(H1.5AsO4)2(H2AsO4) Schwendtner K, Kolitsch U European Journal of Mineralogy 19 (2007) 399-409 Two new structure types: KFe3(AsO4)2(HAsO4)2 and K(H2O)M3+(H1.5AsO4)2(H2AsO4) (M3+ = Fe, Ga, In) - synthesis, crystal structure and spectroscopy _database_code_amcsd 0007221 4.700 8.712 13.828 90 94.86 90 P2/n atom x y z occ Uiso K .6183 .9948 .0091 .5 .0469 O7 .75 .3474 .25 .0248 Fe .75 .77744 .25 .0163 As1 .20590 .65359 .10111 .01445 As2 .25 .03815 .25 .01560 O1 -.0235 .6161 .1840 .0180 O2 .4726 .7755 .1327 .0178 O3 .3265 .4832 .0636 .0234 O4 .0411 .7457 .0017 .0264 O5 -.0200 .9440 .1916 .0178 O6 .1328 .1558 .3381 .0263 H1 .008 .230 .322 .035 H2 -.058 .668 -.026 .026 H3 .8227 .4136 .2072 .06 H4 .4578 .5049 .0280 .5 .05