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
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