Berezanskite

berezanskite

kupletskite-(Cs)

tadzhikite-(Ce)

zeltzerite

Images

Formula: KTi₂Li₃Si₁₂O₃₀
Cyclosilicate (ring silicate), osumilite group, titanium- and lithium- bearing mineral
Crystal system: Hexagonal
Specific gravity: 2.66 measured, 2.674 calculated
Hardness: 2½ to 3
Streak: White
Colour: White
Luminescence: Bright bluish white fluorescence under short wave UV, bright bluish luminescence under an electron beam
Solubility: Insoluble in water or 1:1 hydrochloric acid
Environments

Pegmatites

Localities

At the type locality, the Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan, berezanskite occurs in a fragment of alkali pegmatite in moraine at the Dara-i-Pioz glacier as aggregates, up to 2 x 3 mm, and as vein-like aggregates to 3 x 20 mm, consisting of white platy grains up to 0.6 mm across (AM 83.907). Associated minerals include quartz, aegirine, microcline, kupletskite-(Cs), hyalotekite, polylithionite, tadzhikite-(Ce), dusmatovite, zektzerite and stillwellite-(Ce) (HOM).
Berezanskite from the Dara-i-Pioz Massif - Image

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