Phase-B
Finger L W, Hazen R M, Prewitt C T
American Mineralogist 76 (1991) 1-7
Crystal structures of Mg12Si4O19(OH)2 (phase B) and Mg14Si5O24 (phase AnhB)
_database_code_amcsd 0001341
10.588 14.097 10.073 90 104.10 90 P2_1/c
atom      x      y      z Biso
Si1  .79007 .00099 .07415 0.24
Si2  .49753 .18964 .67358 0.35
Si3  .21336 .12550 .42675 0.30
Si4  .78120 .12333 .57300 0.31
Mg1      .5      0     .5 0.56
Mg2  .49776 .17451 .35639 0.45
Mg3      .5      0      0 0.50
Mg4  .65272 .00249 .29314 0.47
Mg5  .07515 .00035 .15240 0.42
Mg6  .06509 .00035 .63472 0.43
Mg7  .35160 .00277 .21545 0.45
Mg8  .64927 .16994 .12361 0.46
Mg9  .07005 .17303 .96971 0.48
Mg10 .21857 .17720 .75197 0.44
Mg11 .77446 .17593 .89486 0.44
Mg12 .35096 .16857 .04510 0.47
Mg13 .93431 .17750 .19882 0.47
O1    .4984  .0752  .6696 0.41
O2    .6474  .0869  .4613 0.45
O3    .7832  .2400  .5726 0.48
O4    .7830  .0858  .7289 0.48
O5    .2152  .2425  .4249 0.44
O6    .3472  .0875  .3842 0.44
O7    .2104  .0871  .5816 0.42
O8    .0806  .0881  .3171 0.50
O9    .4989  .2413  .5293 0.43
O10   .6203  .2386  .7795 0.55
O11   .5002  .0851  .1721 0.48
O12   .6667  .0744  .9698 0.38
O13   .7928  .0757  .2192 0.45
O14   .0863  .0714  .8220 0.43
O15   .9182  .0796  .0279 0.40
O16   .3331  .0734  .8838 0.41
O17   .2088  .0729  .0711 0.38
O18   .3748  .2392  .7155 0.52
O19   .9116  .0852  .5285 0.54
O20   .0675  .2477  .6369 0.56
O21   .9218  .2481  .3639 0.55
H1     .025   .193   .600  1.7
H2     .918   .204   .416  1.2