Goethite

Rarity: Rare

A topic known well beyond its field, found in many languages.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

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Notion

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Science and technology

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What Wikipedia says

Goethite (, US also ) is a mineral of the diaspore group, consisting of iron(III) oxide-hydroxide, specifically the α-polymorph. It is found in soil and other low-temperature environments such as sediment. Goethite has been well known since ancient times for its use as a pigment (brown ochre).

Excerpt from the Wikipedia article “Goethite”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Raimond Spekking, CC BY-SA 4.0, via Wikimedia Commons.