Wesselsite Chakoumakos B C, Fernandez-Baca J A, Boatner L A Journal of Solid State Chemistry 103 (1993) 105-113 Refinement of the structures of the layer silicates MCuSi4O10 (M=Ca,Sr,Ba) by Rietveld analysis of neutron powder diffraction data Note: gillespite structure Locality: synthetic _database_code_amcsd 0013766 7.3707 7.3707 15.5904 90 90 90 *P4/ncc .25 -.25 0 atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Sr .25 .75 0 .009 .007 .007 .011 0 0 0 Cu .25 .25 .0883 .006 .0045 .0045 .010 0 0 0 Si .5088 .9308 .1511 .006 .003 .004 .012 .000 .003 .000 O1 .4664 .9664 .25 .020 .027 .027 .006 -.004 .011 -.011 O2 .7137 .0008 .1311 .011 .0025 .013 .017 -.0029 .0011 .0054 O3 .3667 .0169 .0865 .012 .0078 .0043 .025 .0023 -.008 -.003