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: light wolframite
_database_code_amcsd 0000230
4.753 5.720 4.968 90 90.08 90 P2/c
atom     x     y     z Biso
W        0 .1808   .25 0.20
Fe      .5 .3215   .75 0.45
O1   .2167 .1017 .5833  0.6
O2   .2583 .3900 .0900  0.6