Odigitriaite

odigitriaite

reedmergnerite

sokolovaite

zeravshanite

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Formula: CsNa5Ca5[Si14B2O38]F2
Phyllosilicate (sheet silicate), cesium- and boron- bearing mineral
Crystal System: Monoclinic
Specific gravity: 2.80 measured, 2.830 calculated
Hardness: 5
Streak: White
Colour: Colourless
Luminescence: Does not fluoresce under UV
Common impurities: Mn,OH,(Y,Fe,Al,Pb)
Environments

Pegmatites

Odigitriaite is a relatively new mineral, approved in 2015 and to date (April 2025) reported only from the type locality

Localities

At the type locality, the Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan, odigitriaite was discovered in moraine adjacent to the massif in the upper reaches of the Darai-Pioz river at the intersection of the Turkestansky, Zeravshansky and Alaisky mountain ridges. It occurs as irregular thin flakes associated with quartz, pectolite, baratovite, fluorite, pekovite, polylithionite, aegirine, leucosphenite, pyrochlore, neptunite, reedmergnerite, mendeleevite-(Се), zeravshanite and sokolovaite (MM 81.113-122).

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