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Berborite Mineral Data

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General Berborite Information

Help on Chemical  Formula: Chemical Formula: Be2(BO3)(OH,F)•(H2O)
Help on Composition: Composition: Molecular Weight = 112.35 gm
   Beryllium  16.04 %  Be   44.52 % BeO
   Boron       9.62 %  B    30.98 % B2O3
   Hydrogen    2.47 %  H    22.05 % H2O
   Oxygen     67.64 %  O
   Fluorine    4.23 %  F     4.23 % F
                -   %   F    -1.78 % -O=F2    
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Be2(BO3)(OH)0.75F0.25•(H2O)
Help on Environment: Environment: Serpentinized dolostone associated with W-Sr-B-Be-bearing skarns
Help on IMA Status: IMA Status: Approved IMA 1967
Help on Locality: Locality: Luppikko deposit, Pitk´┐Żaranta district, Lake Ladoga, Karelia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the BERyllium and BORate in the composition.
Help on Name Pronunciation: Name Pronunciation: Berborite + Pronunciation Say BERBORITE

Berborite Image

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Comments: Colorless, nearly transparent crystalline berborite in matrix.
Location: Saga Quarry, Tvedalen, Vestfold, Norway. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Berborite Crystallography

Help on Axial Ratios: Axial Ratios: a:c = 1:2.39972
Help on Cell Dimensions: Cell Dimensions: a = 4.433, c = 10.638, Z = 2; V = 181.04 Den(Calc)= 2.06
Help on Crystal System: Crystal System: Hexagonal - Pyramidal H-M Symbol (6) Space Group: P 63
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.656(1), 3.11(1), 5.3(1),

Physical Properties of Berborite

Help on Cleavage: Cleavage: {0001} Perfect
Help on Color: Color: Colorless.
Help on Density: Density: 2.2
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Hardness: Hardness: 3 - Calcite
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Berborite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.033 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= -0.032 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2585,KPDmeas= 0.242,KC= 0.2504
Ncalc = 1.52 - 1.55
Help on Optical Data: Optical Data: Uniaxial (-), e=1.485, w=1.58, bire=0.0950.

Calculated Properties of Berborite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.05 gm/cc
note: Specific Gravity of Berborite =2.06 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.17
Boson Index = 0.83
Help on Photoelectric: Photoelectric: PEBerborite = 0.34 barns/electron
U=PEBerborite x rElectron Density= 0.70 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Berborite is Not Radioactive

Berborite Classification

Help on  Dana Class: Dana Class: (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.01)Dana Type
  (26.01.01)Dana Group Berborite Be2(BO3)(OH,F)•(H2O) P 63 6
Help on  Strunz Class: Strunz Class: 06.AB.10 06 - BORATES
  06.A - Monoborates
  06.AB -BO3, with additional anions; 1(D) + OH, etc.
06.AB.10 Berborite Be2(BO3)(OH,F)•(H2O) P 63 6

Other Berborite Information

Help on References: References: NAME( AntBidBlaNic5) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Berborite :
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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Dana No: Strunz No: 06.AB.10





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