COL  ICSD Collection Code 27422
 DATE Recorded Jan 1, 1980; updated Jun 26, 1998
 NAME Carbon
 MINR Lonsdaleite - synthetic at >1273 K, >130 kbar
 FORM C
      = C
 TITL Hexagonal Diamond - A New Form of Carbon
 REF  Journal of Chemical Physics
      JCPSA 46 (1967) 3437-3446
 AUT  Bundy F P, KasperÿJÿS
 CELL a=2.520 b=2.520 c=4.120 à=90.0 á=90.0 ç=120.0
      V=22.7 D=3.33 Z=4
 SGR  P 63/m m c    (194) - hexagonal
 CLAS 6/mmm (Hermann-Mauguin) - D6h (Schoenflies)
 PRS  hP4
 ANX  N
 PARM Atom__No OxStat  Wyck ---X--- ---Y--- ---Z---  -SOF-
      C      1  0.000    4f  1/3     2/3     0.0625
 WYCK f
 REM  M PDF 19-268, density at least 3.33
 TEST Calculated density unusual but tolerable. (Code 23)
 TEST No R value given in the paper. (Code 51)
 TEST At least one temperature factor missing in the paper. (Code 53)