Hereroite Siidra O I, Krivovichev S V, Turner R W, Rumsey M S, Spratt J American Mineralogist 98 (2013) 248-255 Crystal chemistry of layered Pb oxychloride minerals with PbO-related structures: Part I. Crystal structure of hereroite, [Pb32O20(O,[_])](AsO4)2[(Si,As,V,Mo)O4]2Cl10 Locality: Kombat mine, Grootfontein, Namibia _database_code_amcsd 0019741 23.139 22.684 12.389 90 102.090 90 C2/c atom x y z occ Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3) Pb1 .02370 .33013 .11179 .01240 .0127 .0114 .0122 .0030 .0004 -.0007 Pb2 -.13847 .33113 -.05572 .00938 .0116 .0066 .0097 -.0008 .00158 -.0005 Pb3 .24274 .16730 .00179 .01195 .0126 .0103 .0117 -.0027 -.0002 .0010 Pb4 -.03666 .55670 .37405 .01179 .0157 .0076 .0121 .0037 .0032 -.0009 Pb5 -.30232 .33470 -.22005 .01283 .0158 .0104 .0106 -.0036 -.0010 .0016 Pb6 .08073 .16427 -.17277 .00920 .0099 .0057 .0111 -.0001 .00000 .0008 Pb7 -.19191 .66864 -.28106 .01232 .0125 .0115 .0125 -.0015 .0016 -.0048 Pb8 -.07902 .44391 .15108 .01180 .0131 .0062 .0154 -.0008 .0014 -.0033 Pb9 -.19752 .44554 -.26142 .01285 .0136 .0076 .0175 .0017 .0035 .0046 Pb10 -.02290 .04875 -.11756 .01329 .0133 .0091 .0171 -.0008 .0025 .0060 Pb11 .03095 .16428 .11131 .01614 .0170 .0166 .0149 .0028 .0034 -.0063 Pb12 -.23979 .55461 -.48495 .01140 .0153 .0069 .0114 -.0016 .0016 .0020 Pb13 -.08201 .67123 .17201 .01177 .0133 .0097 .0125 .0019 .0030 .0035 Pb14 .18340 .05181 -.23282 .01399 .0170 .0115 .0126 .0061 .0012 -.0014 Pb15 .13716 .05425 .03687 .01445 .0137 .0092 .0205 .0025 .0036 .0069 Pb16 .14468 .16517 -.43715 .01309 .0142 .0117 .0146 .0026 .0056 .0041 SiT .09489 -.06941 -.15611 .48 .0129 .0111 .0172 .0104 -.0016 .0024 .0015 AsT .09489 -.06941 -.15611 .28 .0129 .0111 .0172 .0104 -.0016 .0024 .0015 VT .09489 -.06941 -.15611 .16 .0129 .0111 .0172 .0104 -.0016 .0024 .0015 MoT .09489 -.06941 -.15611 .08 .0129 .0111 .0172 .0104 -.0016 .0024 .0015 As1 -.13500 .56799 -.05413 .0174 .0179 .0133 .0225 .0004 .0076 .0010 Cl1 -.25 .25 0 .0207 .022 .024 .017 .004 .007 .003 Cl2 .1401 .2363 .0553 .0204 .016 .027 .016 .001 .0005 -.002 Cl3 -.0270 .24850 -.1112 .0215 .019 .028 .018 -.002 .0047 -.0065 Cl4 -.0782 .25894 .1645 .0192 .021 .0171 .017 .001 -.0002 .0032 Cl5 -.3020 .75128 -.2273 .0200 .018 .027 .015 .001 .0044 .0006 O1 .0926 .0011 -.1634 .030 O2 .0413 -.0931 -.0975 .031 O3 -.4013 .3997 -.2770 .016 O4 -.3410 .4083 -.0730 .024 O5 -.0749 .5950 .0400 .077 O6 -.1331 .4952 -.0590 .027 O7 -.1185 .5952 -.1698 .099 O8A -.1839 .5906 .015 .58 .071 O8B -.2059 .5928 -.115 .42 .048 O9 .2278 .1153 -.3526 .85 .008 O10 -.0489 .3895 .0160 .014 O11 -.2255 .3907 -.1289 .010 O12 .0560 .1105 -.0214 .012 O13 0 .1031 -.25 .006 O14 -.1587 .3887 .0934 .014 O15 .1695 .1091 -.0956 .011 O16 .2221 .1126 .1404 .018 O17 -.1172 .3897 -.2119 .015 O18 0 .3853 .25 .013 O19 .1077 .1034 -.3268 .012 O20 0 .6202 .25 .015