Tadzhikite-(Ce)

tadzhikite-(Ce)

ekanite

tienshanite

stillwellite-(Ce)

Images

Formula: Ca₄Ce₂Ti◻(B₄Si₄O₂₂)(OH)₂
Inosilicate (chain silicate), single chains, hellandite group, cerium- and boron- bearing mineral
Crystal system: Monoclinic
Specific gravity: 3.73 to 3.86 measured, 3.77 calculated
Hardness: 6
Streak: White
Colour: Brown. grey
Environments

Pegmatites

Localities

At the type locality, the Dara-i-Pioz Massif, Districts of Republican Subordination, Tajikistan, tadzhikite occurs in the replacement units of zoned pegmatite dikes, associated with quartz, microcline, aegirine, ekanite, titanite, eudialyte, polylithionite, arfvedsonite-riebeckite, pyrochlore, tienshanite and stillwellite-(Ce) (HOM).
Tadzhikite-(Ce) from the Dara-i-Pioz Massif - Image

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