Mereheadite Krivovichev S V, Turner R, Rumsey M, Sidra O I, Kirk C A Mineralogical Magazine 73 (2009) 103-117 The crystal structure and chemistry of mereheadite Locality: Merehead Quarry, Cranmore, Somerset, England _database_code_amcsd 0014589 17.372 27.9419 10.6661 90 93.152 90 Cm 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 .8572 .89881 .4134 .0234 .027 .021 .023 .0027 .004 .0024 Pb2 .1633 .40752 -.2085 .0246 .030 .022 .023 -.003 .002 -.0009 Pb3 -.2337 .20451 -.4239 .0230 .022 .021 .027 .000 .005 .0002 Pb4 .9556 0 .1510 .0390 .057 .031 .031 0 .005 0 Pb5 .0550 .3006 -.0108 .0239 .026 .022 .024 -.0013 .001 -.0024 Pb6 -.0255 .20338 -.4337 .0245 .027 .023 .023 .0023 .002 .0014 Pb7 .6842 .90091 .1552 .0238 .022 .023 .026 -.0006 .0005 .0010 Pb8 .3728 .19248 .4016 .0227 .024 .023 .021 -.0029 -.0007 -.0004 Pb9 .4755 .10024 .1902 .0223 .020 .020 .027 -.0009 .002 -.0037 Pb10 -.1159 .09839 -.248 .0235 .029 .021 .020 -.0021 .0002 .0008 Pb11 .2742 .10202 -.4109 .0221 .022 .023 .021 -.0027 .002 -.0020 Pb12 .2895 0 .2769 .922 .0231 .026 .025 .019 0 .005 0 Pb13 -.1090 .30524 -.2534 .0215 .024 .021 .019 .0035 -.002 -.0027 Pb14 .1815 0 .7627 .0255 .024 .018 .034 0 .002 0 Pb15 .0001 .39648 -.4400 .0230 .023 .022 .024 -.004 .0005 .001 Pb16 .3694 .30180 .0606 .925 .0193 .019 .020 .019 .0010 .0001 -.0001 Pb17 .0738 .10482 -.0231 .0280 .022 .026 .036 -.0017 .0005 -.007 Pb18 .2055 .19920 .1320 .0286 .025 .028 .033 .0007 -.001 -.006 Pb19 .7727 0 .6024 .0196 .022 .022 .015 0 .002 0 Pb20 .5871 .19535 .3495 .0232 .019 .025 .026 -.001 -.0007 -.000 Pb21 -.2215 0 -.0517 .0233 .019 .027 .024 0 -.0003 0 Pb22 .1636 .19533 -.2287 .0237 .023 .022 .027 .0020 .005 .0016 Pb23 .5670 0 .0102 .0231 .021 .024 .024 0 -.0006 0 Pb24 .2904 .10332 -.0690 .0235 .024 .025 .022 .0013 .0007 -.0030 Pb25 .6048 0 .3585 .0246 .025 .027 .022 0 .005 0 Pb26 .3900 0 .7648 .0210 .018 .021 .024 0 .005 0 Pb27 .1006 .10703 -.6403 .0293 .035 .030 .024 -.003 .004 .001 Pb28 .9868 0 .5685 .030 .031 .029 .031 0 .005 0 Cl1 .172 .1983 -.549 .034 .04 .040 .019 -.023 -.005 .003 Cl2 -.020 .3989 -.122 .042 .038 .028 .061 -.006 .010 -.002 Cl3 .359 0 .041 .033 .053 .036 .009 0 -.010 0 Cl4 .179 0 .457 .038 .040 .022 .052 0 .015 0 Cl5 .375 .4014 .078 .041 .048 .026 .051 -.002 .020 .004 Cl6 .085 .1032 -.321 .040 .052 .024 .048 .005 .021 .015 Cl7 .097 .5 -.303 .035 .020 .027 .061 0 .028 0 Cl8 .763 0 .257 .039 .045 .030 .044 0 .031 0 Cl9 .3938 .1983 .081 .025 .009 .019 .049 .004 .013 .003 Cl10 .977 0 .858 .032 .047 .036 .012 0 -.010 0 Cl11 .064 .3030 -.351 .022 .037 .015 .015 -.003 -.003 -.001 Cl12 .267 .1021 .247 .036 .050 .021 .040 .007 .017 -.011 Cl13 .480 .3015 -.125 .034 .042 .038 .019 -.000 -.009 .001 Cl14 .289 .2981 .293 .034 .041 .017 .045 -.008 .022 -.004 Cl15 .681 .8973 .468 .020 .014 .029 .019 .007 .002 -.000 Pb1A .187 0 .157 .078 .020 Pb2A .474 .303 .194 .075 .018 O1 -.111 .359 -.410 .014 O2 .273 .157 -.250 .019 O3 .289 .053 .757 .031 O4 .582 .946 .206 .016 O5 .572 .153 .154 .020 O6 .171 .446 -.025 .011 O7 -.133 .254 -.417 .026 O8 -.009 .357 -.625 .022 O9 -.139 .1521 -.417 .010 O10 .176 .154 -.042 .014 O11 .775 .948 .766 .014 O12 -.112 .050 -.418 .018 OH1 .176 .050 -.049 .028 OH2 -.022 .136 -.611 .032 OH3 .478 .2433 .386 .008 OH4 .093 .157 .184 .040 OH5 .064 .051 .186 .036 OH6 .948 0 .354 .062 OH7 .585 .258 .145 .028 C .424 0 .466 .069 O1A .470 0 .385 .069 O1B .405 .037 .525 .069 B -.270 .198 -.116 .069 O2A -.238 .173 -.192 .069 O2B -.283 .240 -.085 .069 O2C -.311 .167 -.057 .069