Szaibelyite
Takeuchi Y, Kudoh Y
American Mineralogist 60 (1975) 273-279
Szaibelyite, Mq2(OH)[B2O4(OH)]: Crystal structure, pseudosymmetry, and
polymorphism
_database_code_amcsd 0000453
12.577 10.393 3.139 90 95.9 90 P2_1/a
atom     x     y     z B(1,1) B(2,2) B(3,3) B(1,2) B(1,3) B(2,3)
Mg1  .5047 .1372 .2348  .0016  .0013  .0215  .0001  .0028  .0002
Mg2  .4129 .4208 .7104  .0021  .0019  .0297  .0002  .0024 -.0014
B1   .1372 .1680 .7598  .0028  .0019  .0383 -.0010  .0029  .0010
B2   .3072 .0472 .6253  .0030  .0023  .0372 -.0005  .0033  .0014
O1   .0762 .0616 .7804  .0026  .0023  .0302  .0002  .0024  .0015
O2   .1012 .2908 .7750  .0029  .0022  .0379 -.0002  .0026  .0001
O3   .2476 .1548 .7208  .0031  .0030  .0450      0  .0016 -.0018
Oh4  .2481 .4485 .6078  .0034  .0025  .0379  .0000  .0019  .0043
O5   .4134 .0434 .7155  .0027  .0021  .3000 -.0002  .0015  .0001
Oh6  .4084 .2953 .2059  .0027  .0020  .0354 -.0004  .0020  .0006
H1     .21   .39   .66
H2     .33   .28   .10