Skip to content
Mineralati

Minerals

Foitite

foitite

(☐,Na)(Fe²⁺2Al)Al6(Si6O18)(BO3)3(OH)3OH

Foitite Mineral Specimens

Foitite Mineral Specimens — via www.irocks.com · Source

Overview

Foitite is a mineral in the tourmaline group, it is a vacancy-dominant member of the group. Foitite is in the 'vacancy' group, due to the absence of atoms in the X site. According to the Czech Geological Society, foitite is rare. However foitite is quite common among low-temperature tourmalines and it might be more common than previously thought. The color of the mineral is dark indigo with purple tints to bluish-black.

Identification characteristics

  • Mohs hardness 7

Scientific references

  1. Foitite — Wikidata. https://www.wikidata.org/wiki/Q3747023 Link
  2. Foitite — Wikipedia. https://en.wikipedia.org/wiki/Foitite Link