# pinakiolite

> English word · Noun

## Definitions
1. A monoclinic-prismatic black mineral containing boron, magnesium, manganese, and oxygen.

## Etymology
From Ancient Greek πινάκιον (pinákion, “tablet”) and λίθος (líthos, “stone”) because of the thin, tabular appearance of the crystals.

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