hematite


hematite

Heavy and relatively hard oxide mineral, ferric oxide (FeO), that constitutes the most important iron ore because of its high iron content and its abundance. Much hematite (from the Greek word meaning “blood,” for its red colour) occurs in a soft, fine-grained, earthy form called red ocher or ruddle. Red ocher is used as a paint pigment; a purified form, rouge, is used to polish plate glass. The world's largest production comes from the Hamersley Range in western Australia.

Variants of HEMATITE

hematite or haematite

This entry comes from Encyclopædia Britannica Concise.
For the full entry on hematite, visit Britannica.com.

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