Robinson P D, Fang J H
American Mineralogist 56 (1971) 1567-1572
Crystal structures and mineral chemistry of hydrated ferric sulphates: II. The
crystal structure of paracoquimbite
10.926 10.926 51.300 90 90 120 R-3
atom x y z Biso
Fe1 0 0 0 3.4
Fe2 0 0 .5 3.6
Fe3 0 0 .2507 3.2
Fe4 0 0 .1677 3.2
Fe5 0 0 .6652 3.5
S1 .249 .4169 .8756 1.8
S2 .584 .7554 .9593 1.8
O1 .325 .349 .8650 2.4
O2 .655 .682 .9697 2.7
O3 .114 .310 .8865 2.5
O4 .685 .892 .9486 2.4
O5 .223 .493 .8545 2.1
O6 .504 .778 .9807 2.1
O7 .339 .520 .8960 1.7
O8 .481 .662 .9388 2.0
OH9 .171 .073 .8553 2.5
OH10 .929 .826 .9787 2.9
OH11 .446 .114 .9016 2.8
OH12 .886 .550 .9290 2.7
OH13 .596 .434 .8552 2.7
OH14 .575 .410 .9755 2.9
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