Burovaite-Ca
Azarova Y V, Shlyukova Z V, Zolotarev A A, Organova N I
Geology of Ore Deposits 51 (2009) 774-783
Burovaite-Ca, (Na,K)4Ca2(Ti,Nb)8[Si4O12]4(OH,O)8*12H2O, a new labuntsovite-group
mineral species and its place in low-temperature mineral formation in pegmatites
of the Khibiny Pluton, Kola Peninsula, Russia
Locality: Khibiny Pluton, Kola Peninsula, Russia
_database_code_amcsd 0018314
14.529 14.203 7.899 90 117.37 90 C2/m
atom      x      y      z occ  Uiso
Si1   .3142 .11047  .2390     .0160
Si2   .2014 .11085  .7937     .0169
TiM1    .25    .25     .5 .67 .0269
NbM1    .25    .25     .5 .33 .0269
TiM2      0 .23715     .5 .77 .0233
NbM2      0 .23715     .5 .23 .0233
O1    .0809  .1360  .6792     .0210
O2    .2705  .1702  .7191     .0273
O3    .2530  .1372  .3668     .0247
O4    .3434      0  .2628      .028
O5    .2185      0  .7700      .033
O6    .4199  .1679  .3103     .0238
O7    .2400  .1327  .0186     .0326
O8    .1009  .2375  .3957     .0196
CaD1      0      0     .5 .64 .0199
WatC1 .1026      0  .3328 .64  .064
KC1   .1026      0  .3328 .19  .064
BaC1  .1026      0  .3328 .01  .064
NaA1  .0826  .2392 -.0123 .41 .0217
CaA1  .0826  .2392 -.0123 .06 .0217
SrA1  .0826  .2392 -.0123 .01 .0217
KB1   .4188      0  .7035 .48  .115
Wat2      0  .3879      0      .203
Wat3  .0263  .3732   .117 .79  .179