Properties
| Category | Silicate mineral |
|---|---|
| Formula | K(Ca,Na); 2Si; 4O; 10(OH,F)•H; 2O |
| Crystal system | Monoclinic |
| Color | Violet, lilac, light brown |
| Crystal habit | Fibrous, massive |
| Cleavage | Good in three directions |
| Fracture | Conchoidal |
| Mohs scale hardness | 5 - 6 |
| Luster | Vitreous to pearly |
| Streak | White |
| Diaphaneity | Translucent |
| Specific gravity | 2.54 - 2.58 |
From the Wikipedia article
Charoite is a rare silicate mineral with the chemical composition K(Ca,Na)2Si4O10(OH,F)•H2O, first described in 1978. It is named after the Chara River, despite its being 70 kilometres (43 mi) away from the discovery place. When it was discovered, it was thought to be a fake, dyed purple to give it its striking appearance.
Source
Source record: crystal-compendium/charoite/minerals.json. Fetched from English Wikipedia by the operator 2 October 2026.
https://en.wikipedia.org/wiki/Charoite — revision id 1333586624. Text and properties from Wikipedia, licensed CC BY-SA 4.0.