Faizievite

Faizievite is a very rare mineral with the formula K₂NaTi₄Li₆Si₂₄O₆₆F₂. This triclinic mineral is chemically related to baratovite and katayamalite. Faizievite is a single-locality mineral, coming from the moraine of the Darai-Pioz glacier, Tien Shan Mountains, Tajikistan. Alkaline rocks of this site are famous for containing numerous rare minerals, often enriched in boron, caesium, lithium, titanium, rare earth elements, barium, and others.

Occurrence and association

Faizievite was detected in quartz boulders, together with aegirine, baratovite, fluorite, leucosphenite, pectolite, and polylithionite.

Relation to other minerals

Faizievite is related to beryl and osumilite groups of minerals.