The Collaborative International Dictionary of English v.0.48:

Haematite \H[ae]m"a*tite\, n.
   Same as Hematite.
   [1913 Webster]

WordNet (r) 3.0 (2006):

haematite
    n 1: the principal form of iron ore; consists of ferric oxide in
         crystalline form; occurs in a red earthy form [syn:
         hematite, haematite]