Vivianite

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

In collections

Nobody has pulled it yet.

What Wikipedia says

Vivianite (Fe(II)3(PO4)2·8H2O) is a hydrated iron(II) phosphate mineral found in a number of geological environments. Small amounts of manganese Mn2+, magnesium Mg2+, and calcium Ca2+ may substitute for iron Fe2+ in its structure.

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

Image: Henk Smeets – tomeikminerals.com, CC BY 4.0, via Wikimedia Commons.