Vermiculite Haase D J, Weiss E J, Steinfink H American Mineralogist 48 (1963) 261-270 The crystal structure of a hexamethylene-diamine-vermiculite complex _database_code_amcsd 0000122 5.33 9.18 17.12 90 97.0 90 C2 atom x y z Mg1 0 0 0 Mg2 0 .333 0 Mg3 0 .667 0 Si1 .3967 .9920 .1607 Si2 .3967 .3330 .1607 Ob .3579 .9920 .0624 Ob .3579 .3480 .0624 Ob .3579 .6617 .0624 O1 .4322 .1775 .1775 O2 .1482 .4040 .1960 O3 .1482 .9290 .1960 N1 .3200 .1600 .3300 C1 .1500 .1875 .3925 C2 .1300 .3475 .4035 C3 -.0400 .3750 .4690 C4 -.0600 .5350 .4800 C5 -.2300 .5625 .5455 C6 .75 .7225 .5565 N2 -.4200 .75 .6190