American Mineralogist Crystal Structure Database

1 matching records for this search.

Britholite-(La)
 
Hughes J M, Mariano A N, Drexler J W
 
Neues Jahrbuch fur Mineralogie, Monatshefte 1992 (1992) 311-319
Crystal structures of synthetic Na-REE-Si oxyapatites, synthetic monoclinic britholite
Locality: synthetic
_database_code_amcsd 0014862
9.678 9.682 7.1631 90 90 120.04 P2_1
atom       x      y      z  occ Biso
La1a  .33267 .66656  .0057 .607  .22
Na1a  .33267 .66656  .0057 .393  .22
La1b  .33415 .66678  .5002 .744 1.04
Na1b  .33415 .66678  .5002 .256 1.04
La2a -.01493 .23465  .2513 .974 .457
Na2a -.01493 .23465  .2513 .026 .457
La2b  .23454 .24954  .7484 .977 .462
Na2b  .23454 .24954  .7484 .023 .462
La2c  .24944 .01482  .2506 .975 .459
Na2c  .24944 .01482  .2506 .025 .459
Si1    .0289  .6287    .25       .35
Si2    .3715  .4004   .248       .33
Si3    .5997  .9708   .252       .37
O1a    .8366  .5165   .245       .85
O1b    .4821  .3200   .261       .77
O1c    .6783  .1623   .243       .88
O2a    .4068  .8779   .267       .70
O2b    .4704  .5933   .238       .72
O2c    .1230  .5304   .267       .73
O3a    .6364  .8985  .0618       .39
O3b    .6811  .9258   .422       1.0
O3c    .2615  .3625   .063       .50
O3d    .2443  .3189   .425        .9
O3e    .0747  .7546   .083        .9
O3f    .1017  .7373   .444       .54
O     -.0007 -.0009   .225  .55  1.9
F     -.0007 -.0009   .225  .45  1.9
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