Helmutwinklerite
Krause W, Belendorff K, Bernhardt H J, McCammon C A, Effenberger H, Mikenda W
European Journal of Mineralogy 10 (1998) 179-206
Crystal chemistry of the tsumcorite-group minerals. New data on ferrilotharmeyerite,
tsumcorite, thometzekite, mounanaite, helmutwinklerite, and a redefinition of gartrellite
Locality: Tsumeb mine, Namibia
_database_code_amcsd 0006712
5.606 5.610 7.617 70.19 69.91 69.18 P-1
atom       x      y      z Biso
PbMe1      0      0      0 2.72
Zn1        0     .5     .5 1.82
Zn2       .5      0     .5 1.84
AsX   .42101 .42320 .77763 1.74
OH1    .1554  .1572  .4059 3.10
O2     .3131  .3093  .6509 1.89
O3a    .2495  .6831  .2581 2.56
O3b    .6842  .2471  .2610 2.42
O4     .2786  .2874  .0085 5.03