Phase-X
Yang H, Konzett J, Prewitt C T
American Mineralogist 86 (2001) 1483-1488
Crystal structure of phase X, a high pressure alkali-rich hydrous silicate
and its anhydrous equivalent
Sample: JKW56
_database_code_amcsd 0002745
5.0812 5.0812 13.2112 90 90 120 P6_3cm
atom     x   y     z occ Uiso
KA     1/3 2/3 .2072 .77 .017
MgM    1/3 2/3 .4541 .96 .008
Si1      0   0 .0792     .002
Si2      0   0 .3347     .008
O1       0   0 .2056     .010
O2   .3102   0 .0458     .009
O3   .3081   0 .3634     .006