Okenite

Rarity: Common

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Notion

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Science and technology

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What Wikipedia says

Okenite (CaSi2O5·2H2O) is a silicate mineral that is usually associated with zeolites. It most commonly is found as small white "cotton ball" formations within basalt geodes. These formations are clusters of straight, radiating, fibrous crystals that are both bendable and fragile.

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

Image: Didier Descouens, CC BY-SA 4.0, via Wikimedia Commons.