Concretion

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

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.

At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

A concretion is a hard and compact mass formed by the precipitation of mineral cement within the spaces between particles, and is found in sedimentary rock or soil. Concretions are often ovoid or spherical in shape, although irregular shapes also occur.

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

Image: Fuzheado (talk), CC BY-SA 3.0, via Wikimedia Commons.