Caryochroite
Soboleva S V, Boeva N M, Kartashov P M, Bortnikov N S
Doklady Earth Sciences 510 (2023) 415-421
Caryochroite, a rare mineral from the titanosilicate group:
Crystal structure, crystal chemistry, and thermal properties
Locality: Umbozero mine, Mt. Alluaiv, Lovozero alkaline pluton, Russia
_database_code_amcsd 0021218
16.550 5.281 24.25 90 93.0 90 P2/n
atom    x    y     z occ
Na    .25 .400   .25
SrA  .520 .840  .280 .31
CaA  .520 .840  .280 .20
NaA  .520 .840  .280 .09
MnA  .520 .840  .280 .17
KA   .520 .840  .280 .13
Fe1  .097 .509 -.008
Fe2  .300 .550 -.013
Fe3  .200 .043 -.018
Fe4  .402 .023 -.012
Fe2+   .5   .5     0
Mn      0    0     0
Ti   .300 .900  .838 .93
Fe   .300 .900  .838 .07
Si1  .423 .390  .885
Si2  .169 .386  .877
Si3  .020 .650  .108
Si4  .121 .140  .100
Si5  .397 .662  .100
Si6  .302 .148  .095
O1   .400 .365 -.052
O2   .192 .402 -.058
O3   .010 .660  .042
O4   .110 .160  .034
O5   .303 .175  .029
O6   .400 .690  .035
O7   .300 .900 -.067
O8   .516 .413  .870
O9   .393 .145  .849
O10  .392 .650  .851
O11  .235 .595  .839
O12  .210 .145  .850
O13  .070 .360  .867
O14  .924 .602  .883
O15  .930 .090  .874
O16  .784 .855  .876
O17  .655 .587  .886
O18  .639 .072  .878
O19   .25 .800   .75
OH1  .092 .863 -.050
OH2  .496 .145  .044
OH3  .202 .696  .026
OH4  .530 .450  .270
OH5  .400 .870  .760
OH6  .390 .400  .250
OH7  .650 .295  .303
Wat1  .25 .250   .75
Wat2 .660 .450  .227