Pyrobelonite
Donaldson D M, Barnes W H
American Mineralogist 40 (1955) 580-596
The structures of the minerals of the descloizite and adelite groups: II -
pyrobelonite.
_database_code_amcsd 0000071
7.663 6.191 9.522 90 90 90 Pnma
atom     x    y     z Biso
Pb   .1341  .25 .1776  1.0
Mn       0    0    .5  0.6
V    .3654  .75 .3128  0.8
O1    .184  .75  .437
O2    .540  .75  .408
O3    .371 .513  .209
O4    .371 .987  .209
OH    .139  .25  .417