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n. A black or blackish-red to brick-red mineral, essentially Fe2O3, the chief ore of iron.

n. An iron ore, mainly peroxide of iron, Fe2O3.

n. 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.

n. Native anhydrous iron sesquioxid, or redoxid of iron, Fe2O3.

n. An intaglio cut in hematite.

n. the principal form of iron ore; consists of ferric oxide in crystalline form; occurs in a red earthy form

"The key to determining if ultra violet light or oxygen formed the hematite is the crystalline structure of the hematite itself."

iron ore   

brown hematite    black diamond   

specular iron    oligist iron    rhombohedral iron ore    bloodstone    brown   

kidney ore    martite   

lodestone    malachite    carnelian    graphite    jasper    magnetite    felspar    bauxite    specular    agate