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The Collaborative International Dictionary of English v.0.48 (gcide)

Hematite \Hem"a*tite\, n. [L. haematites, Gr. ? bloodlike, fr.
a"i^ma, a"i`matos, 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]