Haematite (kidney ore)

Haematite (kidney ore)

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Credit: MARTIN LAND/SCIENCE PHOTO LIBRARY

Caption: Haematite. This iron oxide (Fe2O3) mineral ore is seen in its betryoidal (grape-like) form called 'kidney ore'. Here it is a dull red, known as red ochre, although haematite's colour can vary from black to steel grey. It is a common and widely distributed mineral with industrial uses as a red pigment in paint manufacture and in polishing compounds. This sample was found in Brazil.

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Keywords: betryoidal, brazil, chemical, chemistry, earth science, fe2o3, geographical, geography, geological, geology, haematite, hematite, iron, kidney ore, mined product, mineral, mineralogy, ore, pigment, red, red ochre, rock, south america, south american

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