GNU Collaborative International Dictionary of English

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1.       
   Hematite , n. [L. haematites, Gr.  bloodlike, fr. αἷμα, αἵματος, blood.] (Min.) An important ore of iron, the sesquioxide, so called because of the red color of the powder. It occurs in splendent rhombohedral crystals, and in massive and earthy forms; -- the last called red ocher. Called also specular iron, oligist iron, rhombohedral iron ore, and bloodstone. See Brown hematite, under Brown.
   1913 Webster