Armbruster T, Kunz M
European Journal of Mineralogy 2 (1990) 163-170
Cation arrangement in a unusual uranium-rich senaite: crystal
structure study at 130 K
10.439 10.439 21.091 90 90 120 R-3
atom x y z occ Biso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
PbA 0 0 .0134 .254 2.31 .0328 .0328 .0222 .0164 0 0
UM1 0 0 .5 .466 .74 .0097 .0097 .0086 .0048 0 0
FeM2 0 0 .3102 .667 .66 .0086 .0086 .0080 .0043 0 0
FeM3 .1843 .1438 .1656 .778 .78 .0090 .0095 .0112 .0044 .0009 .0001
TiM4 -.0842 .2446 .3920 .925 .89 .0097 .0117 .0115 .0046 .0023 -.0009
TiM5 .0766 -.2416 .3984 .899 .79 .0102 .0118 .0078 .0054 .0006 .0003
FeM6a 0 0 .3904 .093 1.8
FeM6b 0 0 .3643 .093 1.8
FeM7 .1099 .3664 .1660 .118 2.71 .031 .027 .045 .014 .000 -.004
FeM8 .1760 .1189 .0564 .133 4.67 .04 .04 .10 .016 .011 .018
FeM9 .1774 .1270 .2732 .113 2.46 .030 .023 .037 .010 -.006 -.002
O1 -.1311 .0550 .4381 1.34 .012 .013 .021 .003 .003 -.002
O2 -.2876 -.4925 .4443 1.37 .016 .014 .023 .008 .004 .002
O3 .3583 .2570 .5584 1.06 .017 .011 .014 .009 .000 .000
O4 -.4074 -.4395 .5507 1.24 .017 .012 .019 .008 -.002 -.001
O5 .0522 .1974 .3352 1.19 .019 .020 .016 .009 .006 .007
O6 .3645 .2667 .3396 1.38 .020 .023 .015 .014 -.000 -.000
O7 0 0 .2142 1.06 .009 .009 .022 .004 0 0
Grey I E, Lloyd D J
Acta Crystallographica B32 (1976) 1509-1513
The crystal structure of senaite
Locality: Diamantina region, Brazil
9.172 9.172 9.172 69.020 69.020 69.020 R-3
atom x y z occ Biso
PbM0 0 0 0 .83 2.13
TiM3 .3486 .0190 .1263 .2767 .43
FeM3 .3486 .0190 .1263 .7233 .43
TiM4 .3076 .1494 .7184 .62
TiM5 .4737 .6412 .0840 .58
FeM2 .3101 .3101 .3101 .53
MnM1 .5 .5 .5 .47
O1 .3013 .3771 .6280 .71
O2 .1492 .9413 .2394 .64
O3 .9176 .3030 .4590 1.05
O4 .1426 .9909 .5127 1.01
O5 .3933 .1339 .4874 1.67
O6 .7091 .0718 .2453 .85
O7 .2134 .2134 .2134 1.58
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