Pb21[Si7O22]2[Si4O13]
	Siidra O I, Zenko D S, Krivovichev S V
	American Mineralogist 99 (2014) 817-823
	Structural complexity of lead silicates: Crystal structure of
	Pb21[Si7O22]2[Si4O13] and its comparison to hyttsjoite
	Locality: synthetic
	_database_code_amcsd 0020132
	9.9244 9.9244 34.2357 90 90 120 P6_3/m
	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 2/3 1/3 .594983 .01184 .01273 .01273 .0101 .00637 0 0
	Pb2 2/3 1/3 .490651 .01352 .01453 .01453 .0115 .00726 0 0
	Pb3 .75175 .01367 .545490 .01375 .01206 .01489 .01423 .00668 -.00022 .00059
	Pb4 .08035 .64380 .653630 .01664 .01375 .01605 .01811 .00594 .00214 .00081
	Pb5 2/3 1/3 .698105 .02069 .02583 .02583 .0104 .01292 0 0
	Pb6 .8208 .7603 .75 1/3 .0122 .0061 .0120 .0181 .0042 0 0
	Pb6A .8013 .7563 .74109 1/3 .0481 .0444 .0481 .066 .0335 .0321 .0258
	Si1 0 0 .66788 .0206 .0195 .0195 .023 .0098 0 0
	Si2 .9873 .5707 .75 .0118 .0093 .0103 .0145 .0040 0 0
	Si3 .6029 .6077 .55296 .0101 .0115 .0108 .0090 .0062 -.0019 .0005
	Si4 .9360 .2492 .63335 .0134 .0131 .0148 .0104 .0056 .0000 .0009
	Si5 1/3 2/3 .7398 .5 .0085 .0071 .0071 .011 .0036 0 0
	O1 .8553 .3855 .75 .0125 .015 .013 .010 .008 0 0
	O2 .6955 .5135 .54715 .0137 .017 .012 .013 .007 .001 -.002
	O3 .6446 .7344 .5187 .0191 .031 .017 .015 .016 .003 .005
	O4 .7599 .1252 .6215 .0213 .009 .026 .024 .005 .005 .008
	O5 .0389 .3315 .59424 .0224 .012 .033 .012 .003 .001 .011
	O6 0 0 .7141 .022 .021 .021 .024 .0105 0 0
	O7 .9638 .6542 .7121 .0245 .037 .028 .017 .023 .012 .009
	O8 .1412 .9762 .6532 .0301 .026 .027 .042 .016 .016 .006
	O9 .4174 .4943 .5569 .0284 .011 .014 .058 .005 -.002 -.004
	O10 .9442 .3821 .6617 .037 .032 .021 .042 .002 .016 -.013
	O11 .1581 .5831 .75 .048 .005 .015 .119 .001 0 0
	O12 1/3 2/3 .6943 .5 .027
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