COL  ICSD Collection Code 15189
 DATE Recorded Jan 1, 1980; updated Apr 24, 1985
 NAME Calcium aluminium iron silicate hydroxide *
 MINR Epidote - from the Prince of Wales island, Alaska
 FORM Ca2 Al0.93 Fe0.05 Al Al0.24 Fe0.76 Si3 O13 H
      = H Al2.17 Ca2 Fe.81 O13 Si3
 FORM Ca2 Al2.15 Fe0.81 Ti0.02 Mn0.02 Si3 O13 H
 TITL Refinement of the crystal structures of Epidote, Allanite and 
      Hancockite
 REF  American Mineralogist
      AMMIA 56 (1971) 447-463
 AUT  Dollase W A
 CELL a=8.914(9) b=5.640(3) c=10.162(9) à=90.0 á=115.4(2) ç=90.0
      V=461.5 Z=2
 SGR  P 1 21/m 1    (11) - monoclinic
 CLAS 2/m   (Hermann-Mauguin) - C2h (Schoenflies)
 PRS  mP44
 ANX  AB2C2D3X13
 PARM Atom__No OxStat  Wyck -----X----- -----Y----- -----Z-----  -SOF-
      Ca     1  2.000    2e  0.7562(2)   3/4         0.1510(2)
      Ca     2  2.000    2e  0.6042(2)   3/4         0.4241(2)
      Si     1  4.000    2e  0.3396(3)   3/4         0.0473(2)
      Si     2  4.000    2e  0.6851(3)   1/4         0.2744(2)
      Si     3  4.000    2e  0.1844(3)   3/4         0.3189(2)
      Al     1  3.000    2a  0.          0.          0.            0.93
      Fe     1  3.000    2a  0.          0.          0.            0.05
      Al     2  3.000    2c  0.          0.          1/2
      Fe     2  3.000    2e  0.2946(2)   1/4         0.2245(1)     0.76
      Al     3  3.000    2e  0.2946(2)   1/4         0.2245(1)     0.24
      O      1 -2.000    4f  0.2339(5)   0.9923(11)  0.0410(4)
      O      2 -2.000    4f  0.3040(4)   0.9809(10)  0.3554(4)
      O      3 -2.000    4f  0.7957(5)   0.0152(11)  0.3382(4)
      O      4 -2.000    2e  0.0528(7)   1/4         0.1294(6)
      O      5 -2.000    2e  0.0417(7)   3/4         0.1471(6)
      O      6 -2.000    2e  0.0683(7)   3/4         0.4078(6)
      O      7 -2.000    2e  0.5164(7)   3/4         0.1825(6)
      O      8 -2.000    2e  0.5281(7)   1/4         0.3099(6)
      O      9 -2.000    2e  0.6265(7)   1/4         0.0990(7)
      O     10 -2.000    2e  0.0838(7)   1/4         0.4298(6)
      H      1  1.000    4f  2 Atoms not located in Unit Cell
 WYCK f3 e13 c a
 ITF  Si  1   B=0.41
 ITF  Si  2   B=0.48
 ITF  Si  3   B=0.42
 ITF  Al  1   B=0.51
 ITF  Fe  1   B=0.51
 ITF  Al  2   B=0.43
 ITF  O   1   B=0.7
 ITF  O   2   B=0.63
 ITF  O   3   B=0.79
 ITF  O   4   B=0.6
 ITF  O   5   B=0.6
 ITF  O   6   B=0.5
 ITF  O   7   B=0.6
 ITF  O   8   B=0.9
 ITF  O   9   B=1.
 ITF  O  10   B=0.7
ÿ
 TF   Atom   á(1,1)  á(2,2)  á(3,3)  á(1,2)  á(1,3)  á(2,3)
      Ca 1    0.0037  0.0055  0.0023  0.0000  0.0018  0.0000
                 (3)    (11)     (2)             (2)
      Ca 2    0.0036  0.0103  0.0014  0.0000  0.0005  0.0000
                 (3)    (12)     (2)             (2)
      Fe 2    0.0016  0.0030  0.0012  0.0000  0.0004  0.0000
                 (2)     (8)     (1)             (1)
      Al 3    0.0016  0.0030  0.0012  0.0000  0.0004  0.0000
                 (2)     (8)     (1)             (1)
 RVAL 0.055