Thometzekite 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 0006709 9.077 6.300 7.661 90 116.99 90 C2/m atom x y z occ Biso PbMe1 0 0 0 2.38 CuMe2 .25 .25 .5 1.44 AsX .9167 .5 .2097 .617 1.45 SX .9167 .5 .2097 .383 1.45 OH1 .3426 .5 .4204 1.91 O2 .3083 0 .3267 2.31 O3 .0308 .2887 .2623 1.83 O4 .2084 .5 .0180 2.82