Alpersite Peterson R C, Hammarstrom J M, Seal R R American Mineralogist 91 (2006) 261-269 Alpersite (Mg,Cu)SO4*7H2O, a new mineral of the melanterite group, and cuprian pentahydrite: Their occurrence within mine waste Locality: Miami, Arizona, USA _database_code_amcsd 0004015 14.189 6.547 10.830 90 105.872 90 P2_1/c atom x y z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Mg1 0 0 0 .845 .027 .024 .035 .003 .010 .004 Cu1 0 0 0 .155 .027 .024 .035 .003 .010 .004 Mg2 .5 .5 0 .265 .029 .0300 .0247 .0044 .0064 .0019 Cu2 .5 .5 0 .735 .029 .0300 .0247 .0044 .0064 .0019 S .22865 .4672 .1741 .0307 .0310 .0363 .0006 .0102 .0003 O1 .2017 .4691 .0321 .049 .046 .030 .007 .008 .001 O2 .1444 .5431 .2181 .048 .050 .059 .015 .033 .012 O3 .3152 .6028 .2240 .047 .044 .050 .018 .009 .011 O4 .2538 .2569 .2221 .050 .036 .055 .008 .009 .007 Wat1 .1057 .3789 .4256 .067 .063 .064 .030 .037 .024 Wat2 .1047 .9562 .1773 .051 .043 .046 .004 .003 .003 Wat3 .0286 .7911 .4300 .045 .034 .050 .003 .011 .008 Wat4 .4814 .4530 .1737 .043 .048 .036 .004 .013 .001 Wat5 .4294 .2645 .4391 .049 .040 .043 .007 .007 .007 Wat6 .3480 .8390 .4413 .051 .053 .045 .008 .006 .007 Wat7 .3682 .0085 .1131 .049 .036 .049 .001 .008 .004