Mineralogy Database

Bogvadite Mineral Data

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General Bogvadite Information

Help on Chemical  Formula: Chemical Formula: Na2SrBa2Al4F20
Help on Composition: Composition: Molecular Weight = 896.15 gm
   Barium     30.65 %  Ba   34.22 % BaO
   Sodium      5.13 %  Na    6.92 % Na2O
   Strontium   9.78 %  Sr   11.56 % SrO
   Aluminum   12.04 %  Al   22.76 % Al2O3
   Fluorine   42.40 %  F    42.40 % F
                -   %   F   -17.85 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Na2SrBa2Al4F20
Help on IMA Status: IMA Status: Approved IMA 1988
Help on Locality: Locality: Ivigtut, Greenland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Richard Bogvad (1952-), Danish, former chief geologist of the cryolite mining company.
Help on Name Pronunciation: Name Pronunciation: Bogvadite + Pronunciation Say BOGVADITE
 

Bogvadite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3571:1:0.2685
Help on Cell Dimensions: Cell Dimensions: a = 7.11, b = 19.907, c = 5.347, Z = 2; V = 756.81 Den(Calc)= 3.93
Help on Crystal System: Crystal System: Orthorhombic Space Group: Pnmn,Pn2n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 3.2403(1), 2.9241(0.5), 3.1945(0.5),
 

Physical Properties of Bogvadite

Help on Color: Color: Colorless.
Help on Density: Density: 3.85
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Habit: Habit: Blocky - Crystal shape tends to be equant (e.g. feldspars).
Help on Hardness: Hardness: 4 - Fluorite
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Bogvadite

Help on Optical Data: Optical Data: Biaxial (-), a=1.433, b=1.436, g=1.4389, bire=0.0059, 2V(Calc)=88, 2V(Meas)=87.
 

Calculated Properties of Bogvadite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.54 gm/cc
note: Specific Gravity of Bogvadite =3.93 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.06
Boson Index = 0.94
Help on Photoelectric: Photoelectric: PEBogvadite = 148.38 barns/electron
U=PEBogvadite x rElectron Density= 525.76 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bogvadite is Not Radioactive
 

Bogvadite Classification

Help on  Dana Class: Dana Class: 11.06.20.01 (11)Halide Complexes; Alumino-fluorides
  (11.06)with miscellaneous formulae
  (11.06.20)Dana Group
 
11.06.20.01 Bogvadite Na2SrBa2Al4F20 Pnmn,Pn2n Ortho
Help on  Strunz Class: Strunz Class: 03.CF.15 03 - HALIDES
  03.C - Complex Halides
  03.CF -Tekto-aluminofluorides
 
03.CF.15 Bogvadite Na2SrBa2Al4F20 Pnmn,Pn2n Ortho
 

Other Bogvadite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(37th List of New Min.,Min. Mag.,1996) OPTIC PROP.(37th List of New Min.,Min. Mag.,19)
Help on See Also: See Also: Links to other databases for Bogvadite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Print or Cut-and-Paste your Bogvadite Specimen Label here :

Bogvadite

Na2SrBa2Al4F20
Dana No: 11.06.20.01 Strunz No: 03.CF.15
Locality:

 

Notes:

 

 
   
 


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