Euclase Hazen R M, Au A Y, Finger L W American Mineralogist 71 (1986) 977-984 High-pressure crystal chemistry of beryl (Be3Al2Si6O18) and euclase (BeAlSiO4OH) Sample: Pressure = .001 kbar _database_code_amcsd 0001036 4.780 14.322 4.6335 90 100.310 90 P2_1/a atom x y z Biso Si .17752 .10027 .53639 .39 Al .24877 .44470 .95708 .45 Be .1741 .3006 .4571 .60 O1 .3818 .0324 .7630 .52 O2 .3800 .3770 .6521 .50 O3 .3431 .1998 .5248 .53 O4 .1006 .0531 .2113 .50 O5 .1596 .3320 .1206 .71 H .063 .302 .011 2.4