Cechite
Pertlik F
Neues Jahrbuch fur Mineralogie, Monatshefte 1989 (1989) 34-40
The crystal structure of cechite, Pb(Fe,Mn)(VO4)(OH) with Fe>Mn. A mineral of the descloizite group
Locality: Vrancice, Bohemian pluton, Pribram, Czechoslovakia (Czech Republic)
_database_code_amcsd 0014834
7.605 9.435 6.099 90 90 90 Pnam
atom      x       y     z occ U(1,1) U(2,2) U(3,3) U(1,2) U(1,3) U(2,3)
Pb   .13061  .17430   .25      .0201  .0143  .0191  .0002      0      0
Fe       .5       0     0  .8  .0182  .0121  .0082  .0005 -.0003 -.0002
Mn       .5       0     0  .2  .0182  .0121  .0082  .0005 -.0003 -.0002
V     .8647   .1907   .75      .0158  .0113  .0070 -.0021      0      0
O1    .8751   .2938 .5113      .0258  .0158  .0110 -.0042  .0009  .0012
O2    .0399   .0851   .75      .0155  .0223  .0402 -.0016      0      0
O3    .6865   .0758   .75      .0177  .0164  .0091 -.0049      0      0
OH    .6507   .0693   .25      .0186  .0086  .0102  .0000      0      0