Magnetite vs. Hematite

Magnetitenoun

(mineral) A magnetic mineral, Fe3O4, one of the primary ores of iron. It has also been called lodestone.

Magnetitenoun

An oxide of iron (Fe3O4) occurring in isometric crystals, also massive, of a black color and metallic luster. It is readily attracted by a magnet and sometimes possesses polarity, being then called loadstone. It is an important iron ore. Called also magnetic iron.

Magnetitenoun

an oxide of iron that is strongly attracted by magnets

Magnetite

Magnetite is a mineral and one of the main iron ores, with the chemical formula Fe3O4. It is one of the oxides of iron, and is ferrimagnetic; it is attracted to a magnet and can be magnetized to become a permanent magnet itself.

Hematitenoun

(mineral) An iron ore, mainly peroxide of iron, Fe2O3.

Hematitenoun

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.

Hematitenoun

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

Hematite

Hematite (), also spelled as haematite, is a common iron oxide compound with the formula, Fe2O3 and is widely found in rocks and soils. Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe2O3.