Fluoro-eckermannite
	Oberti R, Hawthorne F C, Camara F, Raudsepp M
	American Mineralogist 84 (1999) 102-111
	Unusual M3+ cations in synthetic amphiboles with nominal fluoro-eckermannite
	composition: Deviations from stoichiometry and structural effects of the
	cummingtonite component
	Sample: Sc, Na.92Na1.97Mg.03Mg3.95Sc1.05Si8O22F2
	_database_code_amcsd 0002056
	9.820 18.036 5.290 90 103.64 90 C2/m
	atom x y z occ Biso
	Si(1) .2827 .0845 .2907 .36
	Si(2) .2883 .1695 .7953 .43
	Mg(1) 0 .0884 .5 .51
	Sc(2) 0 .1815 0 .53 .48
	Mg(2) 0 .1815 0 .47 .48
	Mg(3) 0 0 0 .51
	Na(4) 0 .2760 .5 .97 2.01
	Mg(4) 0 .2760 .5 .03 2.01
	NaA 0 .5 0 .27 2.01
	NaA(m) .0407 .5 .0937 .52 2.33
	NaA(2) 0 .4749 0 .20 3.07
	O1 .1141 .0846 .2160 .47
	O2 .1194 .1659 .7265 .49
	F3 .1012 0 .7097 .59
	O4 .3600 .2483 .7968 .78
	O5 .3490 .1274 .0783 .73
	O6 .3445 .1180 .5789 .72
	O7 .3427 0 .2907 .71
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