Cavansite Hughes J M, Derr R S, Cureton F, Campana C F, Druschel G The Canadian Mineralogist 49 (2011) 1267-1272 The crystal structure of cavansite: location of the H2O molecules and hydrogen atoms in Ca(VO)(Si4O10)*4H2O Note: T = 296 K Locality: Pune, India _database_code_amcsd 0018621 9.7614 13.6666 9.6049 90 90 90 Pcmn atom x y z Uiso V .40796 .25 .52610 .00958 Ca .08632 .25 .38270 .01177 Si1 .09326 .03399 .18476 .00784 Si2 .31501 .04327 .39474 .00758 O1 .08426 .15083 .17913 .01217 O2 .29503 .15790 .41533 .01367 O3 .44570 .01877 .29636 .01436 O4 .16543 .98960 .04456 .01233 O5 .18173 .99676 .31835 .01163 O6 .55529 .25 .45570 .0235 OW7 .9388 .12314 .4635 .0654 H7a -.1294 .1168 .4201 .078 H7b -.0801 .0936 .5387 .078 OW8 .1128 .25 .6393 .0541 H8a .1083 .2993 .6932 .065 OW9 .8098 .25 .295 .396 H9a -.2717 .25 .3235 .475 H9b -.2046 .25 .2052 .475