Iron Oxide

General Description

Hematite, also spelled as haematite, is the mineral form of iron(III) oxide (Fe2O3), one of several iron oxides. It is the oldest known Fe oxide mineral and is widespread in rocks and soils. The name hematite is derived from the Greek word for blood α?μα haima, due to the red coloration found in some varieties of hematite.The red chalk writing of this mineral was one of the earliest in the history of humans.Rich deposits of hematite have been found on the island of Elba that have been mined since the time of the Etruscans.

Definition

Fe 2O3 with impurities.

Hazard

Benign pneumoconiosis.

Flammability and Explosibility

Nonflammable

Potential Exposure

Hematite; as an iron ore composed mainly of ferric oxide, is a major source of iron and is used as a pigment for rubber, paints, paper, linoleum, ceramics, dental restoratives; and as a polishing agent for glass and pre cious metals. It is also used in electrical resistors, semiconduc tors, magnets, and as a catalyst. Human exposure to hematite from underground hematite mining is principally through inhalation and/or ingestion of dusts. No estimates are available concerning the number of underground miners exposed.

Incompatibilities

Contact with hydrogen peroxide, ethyl ene oxide, calcium hypochlorite will cause explosion. Violent reaction with powdered aluminum; hydrazine, hydrogen trisulfide.