Oxy-vanadium-dravite
Bosi F, Reznitskii L, Sklyarov E V
American Mineralogist 98 (2013) 501-505
Oxy-vanadium-dravite, NaV3(V4Mg2)(Si6O18)(BO3)3(OH)3O:
Crystal structure and redefinition of the "vanadium-dravite" tourmaline
Locality: Sludyanka complex, southern Baikal region, Russia
_database_code_amcsd 0019820
16.1908 16.1908 7.4143 90 90 120 R3m
atom       x       y      z   occ   Uiso U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
NaX        0       0 .22575 1.029  .0252  .0255  .0255  .0244  .0128      0      0
VY   .122910 .061455 .63907  .925 .00800  .0073  .0067  .0102  .0036 -.0010 -.0005
VZ   .298218 .261727 .61043  .569 .00670  .0059  .0065  .0075  .0030 .00002  .0005
MgZ  .298218 .261727 .61043  .431 .00670  .0059  .0065  .0075  .0030 .00002  .0005
B     .10951  .21901 .45484       .00887  .0074  .0086  .0111  .0043  .0007  .0015
SiT  .189382 .187781      0       .00701  .0064  .0059  .0088  .0030 -.0003 -.0004
O1         0       0 .76587        .0091  .0089  .0089  .0095  .0044      0      0
O2    .06071  .12141 .48914       .00886  .0081  .0066  .0113  .0033  .0009  .0017
O3    .25659  .12830 .50995       .01127  .0128  .0118  .0095  .0064  .0009  .0004
O4    .09213  .18426 .06973       .01145  .0089  .0164  .0115  .0082 -.0005 -.0011
O5    .18214  .09107 .08701       .01089  .0159  .0085  .0108  .0080  .0014  .0007
O6    .19183  .18285 .78271       .00902  .0100  .0083  .0085  .0044 -.0004 -.0007
O7    .28151  .28147 .07441       .00992  .0082  .0074  .0111  .0016 -.0012 -.0014
O8    .20666  .26751 .43882       .01122  .0056  .0098  .0176  .0033  .0010  .0038
H3     .2643   .1321   .386         .017