Francisite
Pring A, Gatehouse B M, Birch W D
American Mineralogist 75 (1990) 1421-1425
Francisite, Cu3Bi(SeO3)2O2Cl, a new mineral from Iron Monarch, South Australia:
Description and crystal structure
_database_code_amcsd 0001339
6.354 9.630 7.220 90 90 90 *Pmmn
-.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)
Bi     .25   .25 .2416       0.0066 0.0064 0.0082      0      0      0
Cu1      0     0     0       0.0116 0.0055 0.0123 -.0087 0.0041 -.0069
Cu2    .25   .25 .7922       0.0322 0.0061 0.0027      0      0      0
Se     .25 .5570 .6096       0.0072 0.0064 0.0092      0      0  .0008
Cl     .25   .75 .1488       0.0474 0.0345 0.0172      0      0      0
O1     .25 .1113 .9941 .0074
O2   .0409 .5836 .7552 .0157
O3     .25 .1173 .5872 .0169