Armenite
	Armbruster T
	American Mineralogist 84 (1999) 92-101
	Si,Al ordering in the double-ring silicate armenite, BaCa2Al6Si9O30.2H2O:
	A single-crystal X-ray and 29Si MAS NMR study
	_database_code_amcsd 0002054
	18.660 10.697 13.874 90 90 90 Pnc2
	atom x y z occ Biso
	Ba .25003 .75472 .06890 1.165
	Ca1 .4182 .2475 .0516 1.11
	Ca2 .0825 .2536 .0931 1.11
	SiTd1 .2956 .4581 .2070 .36
	AlTd2 .1302 -.0512 -.2970 .70
	SiTd3 .5830 .3321 .2066 .49
	SiTd4 .2081 .0460 .2103 .77
	AlTd5 .3722 .9560 .2081 .49
	SiTd6 .0857 .6609 -.2940 .54
	AlTd7 .5889 .3328 .4352 .62
	AlTd8 .0851 .6725 -.0662 .64
	SiTd9 .2890 .4547 .4313 .42
	SiTdA .1252 .5325 .4324 .61
	SiTdB .3721 .9602 .4370 .44
	SiTdC .2090 .4597 -.0622 .72
	AlTc1 .2511 .2530 .0719 .48
	AlTc2 0 0 .0659 .33
	SiTc3 0 .5 .0674 .34
	SiTc4 .5 0 .0747 .82
	AlTc5 .5 .5 .0746 .78
	O11 .3851 .9925 .3276 1.0
	O12 .2941 .4229 .3191 1.3
	O13 .1077 -.0104 -.1780 1.0
	O14 .4415 .6622 .3188 1.1
	O15 .2049 .0820 .3245 1.1
	O16 .9397 .1609 .3166 1.2
	O21 .2079 .4973 .4604 1.0
	O22 .1249 .7918 -.3221 1.3
	O23 .1152 .8234 -.0376 1.1
	O24 .3564 .5622 .1863 1.1
	O25 .3380 .9270 -.0399 1.0
	O26 .1464 .9455 .1867 1.1
	O27 .3807 .7995 .1792 .8
	O28 .2195 .5204 .1741 .8
	O29 .2907 .4994 -.0353 1.2
	O210 .2831 .9818 .1796 1.2
	O211 .3784 .6875 -.0349 1.0
	O212 .1604 .5806 -.0386 .77
	O31 .0700 .4677 .1324 .9
	O32 .0718 .4439 -.5030 .7
	O33 .1925 .1708 .1470 .7
	O34 -.0183 .1294 .1362 1.2
	O35 .1876 .3388 .0042 .8
	O36 -.0113 .3736 .0046 1.3
	O37 .4832 .8764 .0086 .4
	O38 .4871 .6373 .1404 .2
	O39 .3119 .3350 .1419 .8
	O310 .3069 .3352 .4989 .8
	O311 .4311 .0444 .1370 .9
	O312 .4258 .0405 .5061 .9
	Wat1 .4252 .2516 .3738 2.0
	Wat2 .0725 .2635 .2683 2.8
	OCC .255 .753 -.195 .11 1.58
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