Mineralogy Database

Odintsovite Mineral Data

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General Odintsovite Information

Help on Chemical  Formula: Chemical Formula: K2Na4Ca3Ti2Be4Si12O38
Help on Composition: Composition: Molecular Weight = 1,367.20 gm
   Potassium   5.72 %  K     6.89 % K2O
   Sodium      6.73 %  Na    9.07 % Na2O
   Calcium     8.79 %  Ca   12.30 % CaO
   Titanium    7.00 %  Ti   11.69 % TiO2
   Beryllium   2.64 %  Be    7.32 % BeO
   Silicon    24.65 %  Si   52.74 % SiO2
   Oxygen     44.47 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: K2Na4Ca3Ti2Be4Si12O38
Help on Environment: Environment: In a vein in alkaline syenite pegmatite and in kalsilite syenite.
Help on IMA Status: IMA Status: Approved IMA 1995
Help on Locality: Locality: Murunsky alkaline massif, Aldan shield, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: For Prof. M. M. Odintsova (1911-1979), a founder of the Institute of the Earth's Crust, Irkutsk.
Help on Name Pronunciation: Name Pronunciation: Odintsovite + Pronunciation Say ODINTSOVITE
Help on Synonym: Synonym: ICSD 39874
  PDF 47-1872

Odintsovite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =1.0918:1:2.5668
Help on Cell Dimensions: Cell Dimensions: a = 14.243, b = 13.045, c = 33.484, Z = 8; V = 6,221.33 Den(Calc)= 2.92
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: F ddd
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.53(1), 3.16(1), 3.3(1),

Physical Properties of Odintsovite

Help on Cleavage: Cleavage: None
Help on Color: Color: Colorless, Light pink, Slightly brownish pink.
Help on Density: Density: 2.94 - 2.98, Average = 2.96
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 5-5.5 - Apatite-Knife Blade
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Odintsovite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2225,KPDmeas= 0.2195,KC= 0.2297
Ncalc = 1.67 - 1.68
Help on Optical Data: Optical Data: Biaxial (+), a=1.63, b=1.644, g=1.675, bire=0.0450

Calculated Properties of Odintsovite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.88 gm/cc
note: Specific Gravity of Odintsovite =2.92 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.04
Boson Index = 0.96
Help on Photoelectric: Photoelectric: PEOdintsovite = 3.88 barns/electron
U=PEOdintsovite x relectron= 11.16 barns/cc.
Help on Radioactivity: Radioactivity:

GRapi = 81.36 (Gamma Ray American Petroleum Institute Units)
Concentration of Odintsovite per GRapi unit = 1.23 (%)

Estimated Radioactivity from Odintsovite - barely detectable


Odintsovite Classification

Help on  Dana Class: Dana Class: (61)Cyclosilicate Six-Membered Rings
  (61.01)with [Si6O18] rings; possible (OH) and Al substitution
  (61.01.05)Dana Group Odintsovite K2Na4Ca3Ti2Be4Si12O38 F ddd 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.CJ.50 09 - SILICATES (Germanates)
  09.C - Cyclosilicates
  09.CJ -[Si6O18]12- 6-membered single rings (sechser-Einfachringe),
09.CJ.50 Odintsovite K2Na4Ca3Ti2Be4Si12O38 F ddd 2/m 2/m 2/m

Other Odintsovite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Am.Min.,Vol.81,p1014,1996) OPTIC PROP.(MinRec)
Help on See Also: See Also: Links to other databases for Odintsovite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - GeoScienceWorld
4 - Google Images
5 - Google Scholar
6 - MinDAT
7 - Mineralienatlas (Deutsch)
8 - Online Mineral Museum
9 - QUT Mineral Atlas
10 - Ruff.Info

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Dana No: Strunz No: 09.CJ.50





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