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单词 haematite
释义
haematite

Chemistry
  • A mineral form of iron(III) oxide, Fe2O3. It is the most important ore of iron and usually occurs in two main forms: as a massive red kidney-shaped ore (kidney ore) and as grey to black metallic crystals known as specular iron ore. Haematite is the major red colouring agent in rocks; the largest deposits are of sedimentary origin. In industry haematite is also used as a polishing agent (jeweller’s rouge) and in paints.


Geology and Earth Sciences
  • See hematite.


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