# halloysite

> English word · Noun

## Definitions
1. A monoclinic-domatic clay mineral containing aluminum, hydrogen, oxygen, and silicon.

## Etymology
From Belgian geologist Omalius d'Halloy + -ite.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/halloysite