Ferberite
Escobar C, Cid-Dresdner H, Kittl P, Dumler I
American Mineralogist 56 (1971) 489-498
The relation between "light wolframite" and common wolframite
sample: common wolframite
_database_code_amcsd 0000231
4.750 5.720 4.970 90 90.17 90 P2/c
atom     x     y     z Biso
W        0 .1808   .25  .20
Fe      .5 .3215   .75  .40
O1   .2158 .1068 .5833   .6
O2   .2623 .3850 .0912   .6