Arrojadite-(KFe)
Moore P B, Araki T, Merlino S, Mellini M, Zanazzi P F
American Mineralogist 66 (1981) 1034-1049
The arrojadite-dickinsonite series, KNa4Ca(Fe,Mn)14Al(OH)2(PO4)12:
Crystal structure and crystal chemistry
sample NP
Locality: Nickel Plate mine, Keystone, South Dakota, USA
_database_code_amcsd 0000847
24.730 10.057 16.526 90 105.78 90 A2/a
atom      x      y     z occ
Al1       0     .5     0
Fe1   .4738  .8957 .2202
Fe2   .2674  .0078 .2123
Fe3   .1394  .0142 .1066
Fe4   .4036  .2496 .0222
Fe5   .4004  .7434 .0334
Fe6   .3517  .6992 .2044
Fe7   .3432  .2945 .2193
Ca1   .4848  .2223 .2322  .5
Na1   .1202  .5150 .1289
Na2       0      0     0  .5
Na3     .25  .1460     0  .5
Na4   .4567  .9417 .2077  .5
K       .25  .5043     0
P1    .3662  .0085 .1130  .5
P2    .3354  .9948 .0799  .5
P3    .4246  .4670 .1303
P4    .0385  .2518 .1259
P5    .0474  .7673 .1023
P6    .2115  .7241 .1304
P7    .2045  .2972 .1425
O1    .3675  .0614 .0250
O2    .3635 -.1416 .1120
O3    .3220  .0770 .1426  .5
O4    .4222  .0462 .1807  .5
O5    .2720  .9678 .0234  .5
O6    .4222  .0462 .1807  .5
O7    .4450  .4448 .0501
O8    .3924  .5879 .1213
O9    .3871  .3445 .1301
O10   .4733  .4637 .2103
O11   .0751  .1664 .0842
O12   .0360  .3951 .0941
O13  -.0206  .1891 .1078
O14   .0623  .2533 .2224
O15   .0482  .6428 .0467
O16   .0794  .8719 .0652
O17  -.0126 -.8139 .0961
O18   .0770  .7357 .1939
O19   .1703  .6785 .0484
O20   .2703  .6781 .1315
O21   .2088  .8773 .1395
O22   .1938  .6604 .2044
O23   .1653  .3402 .0583
O24   .2632  .3509 .1516
O25   .2052  .1447 .1489
O26   .1824  .3541 .2156
F     .1383  .0013 .2315