Lammerite
Hawthorne F C
American Mineralogist 71 (1986) 206-209
Lammerite, Cu3(AsO4)2, a modulated close-packed structure
_database_code_amcsd 0001009
5.079 11.611 5.394 90 111.72 90 P2_1/a
atom      x     y     z  Uiso
Cu1       0    .5    .5 .0125
Cu2   .2462 .8367 .8563 .0148
As   -.1111 .8851 .2625 .0096
O1    .1921 .9173 .2203  .013
O2   -.0946 .8157 .5390  .015
O3    .1717 .6871 .9904  .013
O4    .2893 .9902 .7332  .012