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Iron :: Iron (n.) The most common and most useful metallic element, being of almost universal occurrence, usually in the form of an oxide (as hematite, magnetite, etc.), or a hydrous oxide (as limonite, turgite, etc.). It is reduced on an enormous scale in three principal forms; viz., cast iron, steel, and wrought iron. Iron usually appears dark brown, from oxidation or impurity, but when pure, or on a fresh surface, is a gray or white metal. It is easily oxidized (rusted) by moisture, and is attacked b

Lodestone :: Lodestone (n.) A piece of magnetic iron ore possessing polarity like a magnetic needle. See Magnetite.

Magnetite :: Magnetite (n.) 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..

Titaniferous :: Titaniferous (a.) Containing or affording titanium; as, titaniferous magnetite..

Martite :: Martite (n.) Iron sesquioxide in isometric form, probably a pseudomorph after magnetite..

Oligist :: Oligist (a.) Hematite or specular iron ore; -- prob. so called in allusion to its feeble magnetism, as compared with magnetite..

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