Mineralogy Database

Bayerite Mineral Data

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General Bayerite Information

Help on Chemical  Formula: Chemical Formula: Al(OH)3
Help on Composition: Composition: Molecular Weight = 78.00 gm
   Aluminum  34.59 %  Al   65.36 % Al2O3
   Hydrogen   3.88 %  H    34.64 % H2O
   Oxygen    61.53 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Al(OH)3
Help on Environment: Environment: Probably precipitated from high-aluminum gels on carbonates at pH > 5.8 (Hatrurim Formation, Israel); as weathered crusts on amphiboles and pyroxenes (Dnieper region, Russia); in ba uxites.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1928
Help on Locality: Locality: In the Hatrurim Formation, Israel. From an undefined area in the Dnieper region, and in the Listvennoye deposit, Yenisei Ridge, Siberia, Russia. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The artificial compound is thought to have been named for the 19th-century German metallurgist Karl J. Bayer; the name was then applied to the natural mineral.
Help on Name Pronunciation: Name Pronunciation: Bayerite Say BAYERITE
Help on Synonym: Synonym: ICSD 200413
  PDF 20-11
 

Bayerite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.5837:1:0.5435
Help on Cell Dimensions: Cell Dimensions: a = 5.062, b = 8.671, c = 4.713, Z = 4; beta = 90.27° V = 206.86 Den(Calc)= 2.50
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.222(1), 4.71(0.9), 4.35(0.7),
 

Physical Properties of Bayerite

Help on Color: Color: Colorless, White.
Help on Density: Density: 2.53
Help on Diaphaneity: Diaphaneity: Transparent
Help on Streak: Streak: white
 

Optical Properties of Bayerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.089 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.079 (Fair) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2332,KPDmeas= 0.2304,KC= 0.2531
Ncalc = 1.63 - 1.64
Help on Optical Data: Optical Data: Biaxial (?), b=1.583
 

Calculated Properties of Bayerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.56 gm/cc
note: Specific Gravity of Bayerite =2.50 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0003011748
Boson Index = 0.9996988252
Help on Photoelectric: Photoelectric: PEBayerite = 1.10 barns/electron
U=PEBayerite x rElectron Density= 2.82 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Bayerite is Not Radioactive
 

Bayerite Classification

Help on  Dana Class: Dana Class: 06.03.02.01 (06)Hydroxides and Oxides Containing Hydroxyl
  (06.03)with (OH)3 or (OH)6 groups
  (06.03.02)Dana Group
 
06.03.02.01 Bayerite Al(OH)3 P 21/a 2/m
Help on  Strunz Class: Strunz Class: 04.FE.10 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.F - Hydroxides (without V or U)
  04.FE -Hydroxides with OH, without H2O; sheets of edge-sharing octahedra
 
04.FE.10 Bayerite Al(OH)3 P 21/a 2/m
 
04.FE.10 Doyleite Al(OH)3 P1 1
 
04.FE.10 Gibbsite Al(OH)3 P 21/n 2/m
 
04.FE.10 Nordstrandite Al(OH)3 P1 1
 

Other Bayerite Information

Help on References: References: NAME( AntBidBlaNic3) 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 Bayerite :
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
15 - WWW-MINCRYST

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

Bayerite

Al(OH)3
Dana No: 06.03.02.01 Strunz No: 04.FE.10
Locality:

 

Notes:

 

 
   
 


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