COL  ICSD Collection Code 15242
 DATE Recorded Jan 1, 1980; updated Jan 19, 1999
 NAME Copper iron sulfide (18.24/16/32)
 MINR Talnakhite - from the Vein Ores of the Noril$*sk and Talnakh 
      deposits, W
 MINR (Chalcopyrite group)
 FORM Cu18.32 Fe15.9 S32
      = Cu18.32 Fe15.9 S32
 FORM Cu17.9 Fe15.9 Ni.4 S31.8
 TITL The crystal structure of talnakhite, Cu18 Fe16 S32
 REF  American Mineralogist
      AMMIA 57 (1972) 368-380
 REF  Canadian Mineralogist
      CAMIA 13 (1975) 168-172
 AUT  Hall S R, GabeÿEÿJ
 CELL a=10.593 b=10.593 c=10.593 à=90.0 á=90.0 ç=90.0
      V=1188.7 D=4.24 Z=1
 SGR  I -4 3 m      (217) - cubic
 CLAS -43m  (Hermann-Mauguin) - Td  (Schoenflies)
 PRS  cI66
 ANX  AB4C12X16
 PARM Atom__No OxStat  Wyck ---X--- ---Y--- ---Z---  -SOF-
      Fe     1  2.000    2a  0.      0.      0.
      Cu     1  1.000   12e  0.2571  0.      0.        0.42
      Fe     2  3.000   12e  0.2571  0.      0.        0.58
      Cu     2  1.000   12d  1/2     1/4     0.        0.42
      Fe     3  3.000   12d  1/2     1/4     0.        0.58
      Cu     3  1.000    8c  0.2528  0.2528  0.2528
      Cu     4  1.000    6b  1/2     0.      0.        0.04(2)
      S      1 -2.000    8c  0.1245  0.1245  0.1245
      S      2 -2.000   24g  0.1209  0.3737  0.3737
 WYCK g e d c2 b a
 ITF  Cu  4   B=1.0(2)
ÿ
 TF   Atom   U(1,1)  U(2,2)  U(3,3)  U(1,2)  U(1,3)  U(2,3)
      Fe 1    0.0083  0.0083  0.0083  0.0000  0.0000  0.0000
      Cu 1    0.0132  0.0166  0.0166  0.0000  0.0000  0.0016
      Fe 2    0.0132  0.0166  0.0166  0.0000  0.0000  0.0016
      Cu 2    0.0158  0.0147  0.0147  0.0000  0.0000  0.0000
      Fe 3    0.0158  0.0147  0.0147  0.0000  0.0000  0.0000
      Cu 3    0.0204  0.0204  0.0204 -0.0002 -0.0002 -0.0002
      S  1    0.0154  0.0154  0.0154 -0.0018 -0.0018 -0.0018
      S  2    0.0123  0.0129  0.0129 -0.0003 -0.0003 -0.0009
 REM  B Also another model given
 REM  M PDF 25-287, R(isotropic)=0.059
 RVAL 0.051
 TEST Calculated density unusual but tolerable. (Code 23)