Dravite
	Vereshchagin O S, Rozhdestvenskaya I V, Frank-Kamenetskaya O V, Zolotarev A A
	European Journal of Mineralogy 26 (2014) 309-321
	Ion substitutions and structural adjustment in Cr-bearing tourmalines
	Note: Sample 2
	Locality: Shabrovskoe ore district, Middle Urals, Russia
	_database_code_amcsd 0020155
	15.933 15.933 7.213 90 90 120 R3m
	atom x y z occ Uiso
	CaX 0 0 .2297 .02 .0181
	NaX 0 0 .2297 .76 .0181
	KX 0 0 .2297 .01 .0181
	AlY .12367 .06184 .6364 .65 .0052
	CrY .12367 .06184 .6364 .08 .0052
	FeY .12367 .06184 .6364 .01 .0052
	MgY .12367 .06184 .6364 .26 .0052
	AlZ .29776 .26152 .61006 .65 .0044
	CrZ .29776 .26152 .61006 .08 .0044
	FeZ .29776 .26152 .61006 .01 .0044
	MgZ .29776 .26152 .61006 .26 .0044
	SiT .19153 .18969 0 .99 .0045
	AlT .19153 .18969 0 .01 .0045
	B .10991 .21982 .4537 .0060
	OHw 0 0 .7693 .92 .0100
	O1w 0 0 .7693 .08 .0100
	O2 .06062 .12124 .4872 .0110
	OHv .26074 .13037 .5098 .92 .0102
	O3v .26074 .13037 .5098 .08 .0102
	O4 .09316 .18632 .0709 .0088
	O5 .18442 .09221 .0922 .0079
	O6 .19430 .18417 .7769 .0076
	O7 .28483 .28468 .0773 .0079
	O8 .20900 .26970 .4388 .0093
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