Jimthompsonite
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
_database_code_amcsd 0000687
18.626 27.230 5.297 90 90 90 Pbca
atom      x      y      z  occ Biso
Mg1  .12565 .27883 .89663 .940  .43
Fe1  .12565 .27883 .89663 .060  .43
Mg2  .12535 .33533 .39566 .844  .58
Fe2  .12535 .33533 .39566 .156  .58
Mg3  .12506 .39257 .89577 .922  .42
Fe3  .12506 .39257 .89577 .078  .42
Mg4  .12485 .45165 .39642 .989  .35
Fe4  .12485 .45165 .39642 .011  .35
Fe5  .12369 .50609 .89507 .803  .55
Mg5  .12369 .50690 .89507 .197  .55
Si1a .27111 .27787 .55967       .30
Si2a .26964 .39005 .56980       .40
Si3a .27242 .44700 .06669       .42
Si1b .48025 .27769 .26700       .33
Si2b .48078 .38929 .27278       .43
Si3b .47579 .44553 .77466       .47
OHa  .18329 .33519 .06241       .49
OHb  .56861 .33513 .76931       .50
O1a  .30061 .24981 .31159       .65
O2a  .18399 .27777 .56140       .40
O3a  .29949 .33407 .55638       .68
O4a  .18325 .39170 .56291       .50
O5a  .29980 .41491 .82585       .73
O6a  .30187 .42028 .33148       .69
O7a  .18560 .44852 .06801       .55
O8a  .31330 .49841 .08080       .61
O1b  .45141 .24443 .03443       .54
O2b  .56718 .27792 .26828       .41
O3b  .45168 .33338 .23045       .65
O4b  .56725 .39207 .27127       .60
O5b  .44881 .42441 .05168       .59
O6b  .45138 .40886 .54386       .76
O7b  .56296 .44849 .77718       .63
O8b  .43394 .49561 .71391       .62