Veblen D R, Burnham C W
American Mineralogist 63 (1978) 1053-1073
New biopyriboles from Chester, Vermont: II. The crystal chemistry of
jimthompsonite, clinojimthompsonite, and chesterite, and the amphibole-mica
reaction
9.874 27.240 5.316 90 109.5 90 C2/c
atom x y z occ Biso
Mg1 0 .0289 .25 .968 .14
Fe1 0 .0289 .25 .032 .14
Mg2 0 .0849 .75 .959 .16
Fe2 0 .0849 .75 .041 .16
Mg3 0 .1428 .25 .905 .18
Fe3 0 .1428 .25 .095 .18
Mg4 0 .2013 .75 .992 .15
Fe4 0 .2013 .75 .008 .15
Fe5 0 .2569 .25 .845 .43
Mg5 0 .2569 .25 .155 .43
Si1 .2909 .0277 .7656 .18
Si2 .2880 .1359 .7610 .24
Si3 .2971 .1962 .2630 .25
OH .1153 .0850 .1566 .23
O1 .3499 .0037 .5413 .42
O2 .1154 .0278 .6552 .47
O3 .3449 .0840 .8197 .33
O4 .1149 .1420 .6555 .48
O5 .3535 .1713 .0344 .59
O6 .3523 .1628 .5390 .76
O7 .1219 .1983 .1536 .45
O8 .3777 .2474 .3581 .48
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