Seidite-(Ce)
	Ferraris G, Belluso E, Gula A, Soboleva S V, Khomyakov A P
	The Canadian Mineralogist 41 (2003) 1183-1192
	The crystal structure of seidite-(Ce), Na4(Ce,Sr)2{Ti(OH)2(Si8O18)}(O,OH,F)4.5H2O,
	a modular microporous titanosilicate of the rhodesite group
	_database_code_amcsd 0005884
	24.61 7.23 14.53 90 94.6 90 C2/c
	atom x y z occ
	Si1 .136 .008 .083
	Si2 .126 .068 .870
	Si3 .185 .254 .260
	Si4 .183 .699 .212
	Ti 0 0 0 .86
	Nb 0 0 0 .06
	Mn 0 0 0 .05
	Fe 0 0 0 .02
	Ce .195 .750 .960 .21
	La .195 .750 .960 .15
	Nd .195 .750 .960 .05
	Pr .195 .750 .960 .02
	Sm .195 .750 .960 .01
	Sr .195 .750 .960 .27
	Ca .195 .750 .960 .10
	Th .195 .750 .960 .06
	Na1 .061 .759 .215 .80
	K1 .061 .759 .215 .07
	Ba1 .061 .759 .215 .03
	Na2 .159 .370 .045 .80
	K2 .159 .370 .045 .07
	Ba2 .159 .370 .045 .03
	O1 .071 .966 .072
	O2 .150 .048 .977
	O3 .157 .204 .800
	O4 .068 .102 .915
	O5 .161 .807 .116
	O6 .251 .225 .273
	O7 .159 .134 .171
	O8 .180 .475 .231
	O9 .149 .885 .819
	OH10 .987 .264 .036
	Wat11 0 .473 .25
	Wat12 0 .091 .25
	Wat13 .062 .512 .043
	O14 .265 .944 .932
	Wat15 .25 .25 0
	O16 .127 .514 .909 .11
	OH16 .127 .514 .909 .40
	F16 .127 .514 .909 .42
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