Occurs as an accessory mineral in quartz-albite-aegirine veinlets and in albitites in syenites. Isostructural with katayamalite and is the fluorine-rich endmember of the series.
IMA Status:
Approved IMA 1975
Locality:
From the Dara-I-Pioz massif, Alai Range, Tien Shan, Tadzhikistan. Link to MinDat.org Location Data.
Name Origin:
For Rauf Baratovich Baratov, Soviet petrographer, of Tadzhikistan.
Aggregates - Made of numerous individual crystals or clusters.
Habit:
Platy - Sheet forms (e.g. micas).
Hardness:
3.5 - Copper Penny
Luster:
Vitreous - Pearly
Streak:
white
Optical Properties of Baratovite
Gladstone-Dale:
CI meas= -0.022 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= -0.019 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2295,KPDmeas= 0.2303,KC= 0.2252 Ncalc = 1.66
Optical Data:
Biaxial (+), a=1.672, b=1.672, g=1.673, bire=0.0010, 2V(Calc)=0, 2V(Meas)=60. Dispersion r > v strong.
Calculated Properties of Baratovite
Electron Density:
Bulk Density (Electron Density)=2.89 gm/cc note: Specific Gravity of Baratovite =2.93 gm/cc.
Fermion Index:
Fermion Index = 0.02 Boson Index = 0.98
Photoelectric:
PEBaratovite = 8.73 barns/electron U=PEBaratovite x relectron= 25.25 barns/cc.
Radioactivity:
GRapi = 39.51 (Gamma Ray American Petroleum Institute Units)
Concentration of Baratovite per GRapi unit = 2.53 (%)
Estimated Radioactivity from Baratovite - barely detectable