Tridymite

Rarity: Uncommon

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

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At a glance

Class

Notion

Domain

Science and technology

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What Wikipedia says

Tridymite is a high-temperature polymorph of silica and usually occurs as minute tabular white or colorless pseudo-hexagonal crystals, or scales, in cavities in felsic volcanic rocks. Its chemical formula is SiO2. Tridymite was first described in 1868 and the type location is in Hidalgo, Mexico.

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

Image: Fred Kruijen, CC BY-SA 3.0 nl, via Wikimedia Commons.