# simonite

> English word · Noun

## Definitions
1. A monoclinic-prismatic red mineral containing arsenic, mercury, sulphur, and thallium.

## Etymology
Simonite (TlHgAs₃S₆), found in Allchar, Macedonia, Yugoslavia, named in 1982 for Simon Engel, son of Peter Engel (b. 1942), a Swiss crystallographer, + -ite

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