Lemmleinite-K
Rastsvetaeva R K, Arakcheeva A V, Khomyakov A P
Doklady Chemistry 351 (1996) 294-297
Crystal structure and microtwinning of a new monoclinic analog of
nenadkevichite
Locality: Khibiny alkaline massif, Kola Peninsula, Russia
_database_code_amcsd 0012501
14.39 13.900 7.825 90 117.6 90 C2/m
atom     x     y     z occ Biso
Na   .4083 .2647  .000 .43  3.3
K1   .0842     0 .3365 .95  2.6
K2   .4159     0 .7012 .80  3.3
TiM1     0 .2244    .5  .7 1.47
NbM1     0 .2244    .5  .3 1.47
TiM2   .25   .25    .5  .7 1.51
NbM2   .25   .25    .5  .3 1.51
Si1  .2086 .1096 .8015      .81
Si2  .3232 .1101 .2525      .85
O1   .2391 .1244  .027      1.4
O2   .2728 .1798  .734      1.1
O3   .1008 .2244  .396  .7   .9
OH3  .1008 .2244  .396  .3   .9
O4   .2358     0  .768      1.5
O5   .4229 .1767  .304      1.7
O6   .2667 .1284  .386      1.2
O7   .3683     0  .282      1.3
O8   .0830 .1237  .681      1.5
Wat1    .5  .142     0 .90  8.8
Wat2     0  .126     0 .88 10.9