Montesommaite
Rouse R C, Dunn P J, Grice J D, Schlenker J L, Higgins J B
American Mineralogist 75 (1990) 1415-1420
Montesommaite, (K,Na)9Al9Si23O64.10H2O, a new zeolite related to merlinoite and
the gismondine group
_database_code_amcsd 0001338
7.141 7.141 17.307 90 90 90 *I4_1/amd
0 -.25 .125
atom     x    y    z occ Uiso
K        0    0   .5     .025
Al       0 .463 .090 .29 .005
Si       0 .463 .090 .71 .005
O1       0  .25 .116     .015
O2   .1857 .436  7/8     .015
O3       0    0    0     .015
Wat      0  .25 .342 .25 .015