Helictite

Rarity: Common

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At a glance

Class

Notion

Domain

Science and technology

In collections

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What Wikipedia says

A helictite is a speleothem (cave-formed mineral) found in a limestone cave that changes its axis from the vertical at one or more stages during its growth. Helictites have a curving or angular form that looks as if they were grown in zero gravity.

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

Image: Roberto Lombreras known as Rover0 on flickr.com, CC BY-SA 2.0, via Wikimedia Commons.