Biotite
	Brigatti M F, Davoli P
	American Mineralogist 75 (1990) 305-313
	Crystal-structure refinement of 1M plutonic biotites
	sample M32 from a syenite in the Valle del Cervo pluton
	_database_code_amcsd 0001295
	5.346 9.252 10.238 90 100.02 90 C2/m
	atom x y z occ B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
	Fe1 0 0 .5 0.0104 0.0022 0.0022 0 0.0016 0
	Mg2 0 .3340 .5 0.0056 0.0027 0.0028 0 0.0004 0
	K 0 .5 0 0.0222 0.0084 0.0068 0 0.0020 0
	Al .0752 .1674 .2262 .25 0.0074 0.0022 0.0023 .0007 0.0005 .0002
	Si .0752 .1674 .2262 .75 0.0074 0.0022 0.0023 .0007 0.0005 .0002
	O1 .0236 0 .1681 0.0173 0.0048 0.0029 0 -.0003 0
	O2 .3221 .2339 .1695 0.0153 0.0061 0.0032 -.0011 0.0013 .0000
	O3 .1308 .1673 .3910 0.0128 0.0033 0.0027 .0012 0.0004 -.0007
	O4 .1293 .5 .3960 0.0130 0.0040 0.0035 0 0.0029 0
	H .010 .5 .315
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