Talc
	Gruner J W
	Zeitschrift fur Kristallographie 88 (1934) 412-419
	The crystal structures of talc and pyrophyllite
	Note: talc 2M
	Locality: Harford County, Maryland, USA
	_database_code_amcsd 0010541
	5.26 9.10 18.81 90 100.00 90 C2/c
	atom x y z
	Mg1 0 0 0
	Mg2 0 .333 0
	Si1 -.239 0 .143
	Si2 .261 .167 .143
	O1 .203 .5 .058
	O2 .203 .167 .058
	OH1 .203 -.167 .058
	O3 .025 .083 .176
	O4 -.475 .083 .176
	O5 .275 .333 .176
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	Talc
	Perdikatsis B, Burzlaff H
	Zeitschrift fur Kristallographie 156 (1981) 177-186
	Strukturverfeinerung am talk Mg3[(OH)2Si4O10]
	Locality: Harford County, Maryland, USA
	_database_code_amcsd 0010839
	5.290 9.173 9.460 90.46 98.68 90.09 C-1
	atom x y z Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
	Si1 .24527 .50259 .29093 .0087 .0074 .0095 .0002 .0014 .0000
	Si2 .24590 .83587 .29108 .0086 .0074 .0097 .0003 .0019 -.0003
	Mg1 0 0 0 .0076 .0069 .0097 .0001 .0017 -.0001
	Mg2 .50012 .83332 .99994 .0078 .0069 .0101 .0000 .0015 -.0004
	O1 .1991 .8344 .1176 .0100 .0094 .0106 .0000 .0017 -.0001
	O2 .6970 .6674 .1126 .0121 .0102 .0110 .0005 .0017 -.0001
	O3 .1980 .5012 .1176 .0103 .0094 .0097 .0000 .0012 .0000
	O4 .0199 .9287 .3481 .0104 .0136 .0133 .0044 .0015 -.0010
	O5 .5202 .9109 .3494 .0112 .0141 .0124 -.0032 .0022 .0000
	O6 .2429 .6699 .3484 .0162 .0085 .0120 .0002 .0024 .0002
	H .719 .669 .203 .0076
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	Talc
	Drits V A, Guggenheim S, Zviagina B B, Kogure T
	Clays and Clay Minerals 60 (2012) 574-587
	Structures of the 2:1 layers of pyrophyllite and talc
	Note: structure is averaged to remove stacking disorder effects
	Locality: Harford County, Maryland, USA
	_database_code_amcsd 0020723
	5.1848 8.9230 9.19 90.69 90.9 90 C-1
	atom x y z
	Mg1 0 0 0
	Mg2 .5 .166592 0
	Si1 .833666 .166828 .2910
	Si2 .333666 .333172 .2910
	O1 .33361 .333025 .1176
	O2 .83361 .166975 .1176
	Oh1 .332973 0 .1126
	Ob1 .351598 .5 .3481
	Ob2 .574855 .24099 .3489
	Ob3 .074855 .25901 .3489
	H .333024 .001528 .203
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