# katoptrite

> English word · Noun

## Definitions
1. A monoclinic-prismatic mineral containing aluminum, antimony, iron, magnesium, manganese, oxygen, and silicon.

## Etymology
Ancient Greek κάτοπτρον (kátoptron, “mirror”) + -ite, named "for the perfectly reflecting cleavage surfaces".

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