Baratovite

Formula:  KCa₇(Ti,Zr)₂Li₃Si₁₂O₃₆F₂

Origin of name:  For Rauf Baratovich Baratov, Tadzhikistan petrographer

Crystal system:  Monoclinic, pseudohexagonal

Crystal class:  2/m

Twinning: Common on {001}

Unit cell: a = 16.941 Å, b = 9.746 Å, c = 20.907 Å, b = 112.5°

Colour:  Mother-of-pearl white

Diaphaneity: Transparent to translucent

Luster:  Vitreous, pearly

Habit:  Platy deposits

Hardness:  3.5

Specific gravity:  2.92

Cleavage:  1; {001} perfect

Tenacity: Brittle

Streak:

Synonyms/varieties:

Comments:  Determined to be same as katayamalite, but neither has been proposed to be discredited. Found as accessory mineral in quartz-albite-aegirine veinlets and in albitites in syenites, as fine-grained accessory mineral in small aegirine syenite stock in coarse-grained biotite granite