Vermiculite
	Hendricks S B, Jefferson M E
	American Mineralogist 23 (1938) 851-862
	Crystal structure of vermiculites and mixed vermiculite-chlorites
	_database_code_amcsd 0000019
	5.33 9.18 28.85 90 93.25 90 Cc
	atom x y z
	Mg1 0 0 0
	Mg2 0 1/3 0
	Mg3 0 2/3 0
	OH1 .180 .5 .040
	OH2 -.180 5/6 -.040
	O1 .180 5/6 .040
	O2 -.180 .5 -.040
	O3 .180 1/6 .040
	O4 -.180 1/6 -.040
	O5 -.048 .75 .115
	O6 .048 .5833 -.115
	O7 .452 .75 .115
	O8 -.452 .5833 -.115
	O9 .202 0 .115
	O10 -.202 1/3 -.115
	Si1 .196 5/6 .095
	Si2 -.196 .5 -.095
	Si3 -.304 2/3 .095
	Si4 .304 2/3 -.095
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