Aenigmatite
Yang H, Konzett J
American Mineralogist 85 (2000) 259-262
High-pressure synthesis of Na2Mg6Si6O18(OH)2 - a new hydrous silicate phase
isostructural with aenigmatite
_database_code_amcsd 0002350
10.2925 10.7052 8.8027 105.280 96.712 125.256 P-1
atom     x     y     z occ  Uiso
MgM1     0     0    .5     .0130
MgM2     0    .5     0     .0174
MgM3 .3139 .8498 .1782     .0095
MgM4 .7687 .8195 .1512     .0086
MgM5 .5949 .9407 .0617     .0085
MgM6 .0966 .9420 .0534     .0135
MgM7 .9900 .7309 .2680 .92 .0078
AlM7 .9900 .7309 .2680 .08 .0078
NaM8 .2088 .6334 .3899     .0151
NaM9 .6620 .6099 .3672     .0155
SiT1 .4765 .2333 .3335     .0084
SiT2 .9804 .2299 .3428     .0086
SiT3 .7880 .3385 .2375     .0060
SiT4 .2780 .3398 .2243     .0060
SiT5 .6478 .9495 .4428     .0078
SiT6 .3563 .5596 .0455     .0079
H1   .1290 .0486 .3422
H2   .0241 .3381 .0489
O1   .3516 .0676 .1688     .0108
O2   .8517 .0627 .1745     .0109
O3   .5577 .9605 .2931     .0104
Oh4  .0267 .9456 .2735     .0195
O5   .2398 .8748 .3858     .0137
O6   .7537 .8856 .3865     .0132
O7   .5047 .8015 .4992     .0091
O8   .9565 .7835 .4900     .0105
O9   .8914 .3152 .3728     .0110
O10  .3992 .3323 .3563     .0075
O11  .6578 .1653 .0655     .0073
O12  .1560 .1641 .0585     .0068
Oh13 .5318 .7163 .0378     .0098
O14  .0617 .7323 .0603     .0097
O15  .2426 .6091 .1100     .0066
O16  .7484 .6084 .1260     .0082
O17  .4032 .5036 .1907     .0104
O18  .9335 .5048 .2196     .0115
O19  .1594 .3645 .3150     .0123
O20  .6705 .3637 .3367     .0066