Coffinite
Fuchs L H, Gebert E
American Mineralogist 43 (1958) 243-248
X-ray studies of synthetic coffinite, thorite and uranothorites
_database_code_amcsd 0000083
6.995 6.995 6.263 90 90 90 I4_1/amd
atom x   y    z
U    0   0    0
Si   0   0   .5
O    0 .18 .347