Pentahydrite
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: Big Mike mine, Nevada, USA
_database_code_amcsd 0004016
6.2490 10.5846 6.0384 82.461 109.433 104.805 P-1
atom     x     y     z occ Uiso
Mg1      0     0     0  .2 .049
Cu1      0     0     0  .8 .049
Mg2     .5    .5     0  .7 .048
Cu2     .5    .5     0  .3 .048
S    .0363 .2884 .6392     .036
O1    .910 .1601  .669     .037
O2    .261 .3232  .842     .037
O3    .872 .3715  .638     .037
O4    .051 .2981  .408     .037
Wat1  .820 .0683  .173     .037
Wat2  .314 .1172  .174     .037
Wat3  .530 .5959  .672     .037
Wat4  .232 .5913  .981     .037
Wat5  .453 .1276  .648     .037