Tomichite
Grey I E, Madsen I C, Harris D C
American Mineralogist 72 (1987) 201-208
Barian tomichite, Ba.5(As2).5Ti2(V,Fe)5O13(OH), its crystal structure and
relationship to derbylite and tomichite
_database_code_amcsd 0001067
7.119 14.176 4.992 90 105.1 90 P2_1/m
atom     x      y     z  occ Biso
Ti1  .4965    .25 .7453   .6  .35
V1   .4965    .25 .7453   .3  .35
Fe1  .4965    .25 .7453   .1  .35
Ti2  .5017  .1289 .2484  .62  .23
V2   .5017  .1289 .2484 .285  .23
Fe2  .5017  .1289 .2484 .095  .23
Ti3  .8171  .0606 .8736   .3  .10
V3   .8171  .0606 .8736 .525  .10
Fe3  .8171  .0606 .8736 .175  .10
Ti4  .8195 -.0620 .3755  .27  .15
V4   .8195 -.0620 .3755  .55  .15
Fe4  .8195 -.0620 .3755  .18  .15
As   .0789    .25 .0125       .47
O1    .342    .25  .033       .01
O2    .673  -.047 -.023       .50
O3    .654   .152 -.023       .19
O4    .003   .155  .756       .52
O5    .002   .034  .252       .45
O6    .677   .048  .483       .34
O7    .342   .152  .516       .43
O8    .647    .25  .458       .38