Villiaumite

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

Villiaumite is a rare halide mineral composed of sodium fluoride, NaF. It is very soluble in water and some specimens fluoresce under long and short wave ultraviolet light. It has a Mohs hardness of 2.5 and is usually red, pink, or orange in color. It is toxic to humans.

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

Image: Modris Baum, Public domain, via Wikimedia Commons.