93-057 Hexagonal: P[6.sub.3]/m, P[6.sub.3] or P[6.sub.3]22 a 8.406 c 6.740 [angstrom] Megascopic color not observed; metallic; opaque.
93-061 Cubic: Pm3m a 10.373 [angstrom] Megascopic color unknown; metallic; opaque.
93-062 Tetragonal: P[4.sub.2]22, P[4.sub.2]/m or P[4.sub.2] a 8.913 c 6.098 [angstrom] Megascopic color unknown; metallic; opaque.