Effenbergerite
Knight K S, Henderson C M B, Clark S M
European Journal of Mineralogy 22 (2010) 411-423
Structural variations in the wesselsite-effenbergerite (Sr1-xBaxCuSi4O10)
solid solution
Locality: synthetic
Sample: x = .636
_database_code_amcsd 0018773
7.4030 7.4030 15.9357 90 90 90 *P4/ncc
.25 -.25 0
atom     x     y     z  occ Uiso
Ba     .25   .75     0 .636 .109
Sr     .25   .75     0 .364 .109
Cu     .25   .25 .0937      .114
Si   .5134 .9355 .1526      .040
O1   .4530 .9899 .2455   .5 .076
O2   .7203 .0007 .1351      .073
O3   .3781 .0258 .0890      .100